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Tridymite

A valid IMA mineral species - grandfathered
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About TridymiteHide

Formula:
SiO2
Colour:
Colourless, white, yellowish white, or grey
Lustre:
Vitreous
Hardness:
6½ - 7
Specific Gravity:
2.25 - 2.28
Crystal System:
Triclinic
Name:
From the Greek "Tridymos", triplet, alluding to its common twinning as trillings.
Tridymite is a low pressure, mostly high-temperature-stable polymorph of silica that can also form or persist metastably at low temperatures. The high-temperature form occurs most notably as vapour-deposited, platey crystals in vesicles in some volcanic rocks, also rarely as phenocrysts in some felsic volcanics, or as a contact metamorphic material in some hornfels.

Tridymite can occur in seven polytypes and the most common at standard atmospheric pressure are known as α and β; both commensurately and incommensurately modulated structure variants are known. Below 100°C the triclinic form, α-tridymite is stable; there are also orthorhombic, monoclinic and hexagonal polytypes stable at higher temperatures. The orthorhombic β-tridymite polytype is most stable at elevated temperatures (>870°C) and it converts to β-cristobalite above 1470°C. However, tridymite does not usually form directly from pure β-quartz, and it is usually stabilised by alkali metals. Otherwise β-quartz transitions directly to cristobalite at 1050°C without the occurrence of the tridymite phase.

Some polytypes of tridymite ( from Deer et al. 2004)
NameSymmetrySpace groupT (°C)
HP (β)HexagonalP63/mmm460
LHPHexagonalP6322400
OC (α) Orthorhombic C2221. 220
OSOrthorhombic100–200
OPOrthorhombicP212121155
MCMonoclinicCc22
MXMonoclinicC122

In the above table, M, O, H, C, P, L and S stand for monoclinic, orthorhombic, hexagonal, centered, primitive, low (temperature) and superlattice. T indicates the temperature, at which the corresponding phase is relatively stable, though the interconversions between phases are complex and sample dependent, and all these forms can coexist at ambient conditions. Mineralogy handbooks often arbitrarily assign tridymite to the triclinic crystal system, yet use hexagonal Miller indices because of the hexagonal crystal shape.

A low temperature form is commonly reported as a constituent of certain types of opal, intergrown with cristobalite (opal-CT), found in many environments including marine sedimentary rocks derived from biogenic opaline sediments, and low temperature cavity infillings, replacements, etc., including some precious opal (Sanders, 1975). Some wood opal is mostly tridymite (Mitchell & Tufts, 1973). However, some workers note that opal is hydrous and lacks any long-range ordering, the opal structure just mimicking cristobalite and tridymite, so may not contain true tridymite (Smith, 1998).

Large tridymite deposits have been detected on Mars, but their nature and origin are uncertain (Lakdawalla, 2015).


Unique IdentifiersHide

Mindat ID:
4015
Long-form identifier:
mindat:1:1:4015:6
GUID
(UUID V4):
a6690284-91bd-4ecf-a045-8f91efc49d49

IMA Classification of TridymiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First published:
1868

Classification of TridymiteHide

4.DA.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
A : With small cations: Silica family
75.1.2.1

75 : TECTOSILICATES Si Tetrahedral Frameworks
1 : Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
7.8.3

7 : Oxides and Hydroxides
8 : Oxides of Si

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
TrdIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
TrdKretz (1983)Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.
TrdSiivolam & Schmid (2007)Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download
TrdWhitney & Evans (2010)Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371
TrdThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download
TrdWarr (2020)Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30

Physical Properties of TridymiteHide

Vitreous
Transparency:
Transparent, Translucent
Comment:
May be pearly on {0001}
Colour:
Colourless, white, yellowish white, or grey
Streak:
White
Hardness:
6½ - 7 on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
[0001] Indistinct, [1010] Imperfect
Fracture:
Conchoidal
Density:
2.25 - 2.28 g/cm3 (Measured)    2.28 g/cm3 (Calculated)

Optical Data of TridymiteHide

Type:
Biaxial (+)
RI values:
nα = 1.468 - 1.482 nβ = 1.470 - 1.484 nγ = 1.474 - 1.486
2V:
Measured: 40° to 86°, Calculated: 50° to 72°
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none

Chemistry of TridymiteHide

Mindat Formula:
SiO2

Crystallography of TridymiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Cell Parameters:
a = 9.932(5) Å, b = 17.216(6) Å, c = 81.854(9) Å
α = 90°, β = 90°, γ = 90°
Ratio:
a:b:c = 0.577 : 1 : 4.755
Unit Cell V:
13,996.16 ų (Calculated from Unit Cell)
Z:
320
Morphology:
Pseudohexagonal plates, wedge-shaped, tabular.
Twinning:
Trilling, multiple contact twins or simple twins on {1016} and contact or penetration twins on {3034}
Comment:
Orthorhombic, pseudohexagonal; triclinic below 100°C

Crystallographic forms of TridymiteHide

Crystal Atlas:
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Tridymite no.26 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000531TridymiteDollase W A, Baur W H (1976) The superstructure of meteoritic low tridymite solved by computer simulation American Mineralogist 61 971-9781976Steinbach meteorite, Saxony, Germany0293
0006615TridymiteGraetsch H, Topalovic-Dierdorf I (1996) 29Si MAS NMR spectrum and superstructure of modulated tridymite L3-To(MX-1) European Journal of Mineralogy 8 103-1131996synthetic0293
0006616TridymiteGraetsch H, Topalovic-Dierdorf I (1996) 29Si MAS NMR spectrum and superstructure of modulated tridymite L3-To(MX-1) European Journal of Mineralogy 8 103-1131996synthetic0293
0008552TridymiteGraetsch H (2001) X-ray powder diffraction study on the modulated high temperature forms of SiO2 tridymite between 110 and 220 C Physics and Chemistry of Minerals 28 313-3212001synthetic0293
0008553TridymiteGraetsch H (2001) X-ray powder diffraction study on the modulated high temperature forms of SiO2 tridymite between 110 and 220 C Physics and Chemistry of Minerals 28 313-3212001synthetic0388
0020733TridymiteDollase W A (1967) The crystal structure at 220 C of orthothombic high tridymite from the Steinbach meteorite Acta Crystallographica 23 617-6231967Steinbach meteorite0293
0020734TridymiteKato V K, Nukui A (1976) Die kristallstruktur des monoklinen tief-tridymits Acta Crystallographica B32 2486-24911976synthetic0293
0009625TridymiteKonnert J H, Appleman D E (1978) The crystal structure of low tridymite Acta Crystallographica B34 391-4031978Plumas County, California, USA0293
0020744TridymiteLee S, Xu H (2019) Using powder XRD and pair distribution function to determine anisotropic atomic displacement parameters of orthorhombic tridymite and tetragonal cristobalite Acta Crystallographica B75 https://doi.org/10.1107/S20525206190009332019rhyolitic rock, New Mexico, USA0293
0013132TridymiteHirose T, Kihara K, Okuno M, Fujinami S, Shinoda K (2005) X-ray, DTA and Raman studies of monoclinic tridymite and its higher temperature orthorhombic modification with varying temperature. Journal of Mineralogical and Petrological Sciences 100 55-692005synthetic0298
0013133TridymiteHirose T, Kihara K, Okuno M, Fujinami S, Shinoda K (2005) X-ray, DTA and Raman studies of monoclinic tridymite and its higher temperature orthorhombic modification with varying temperature. Journal of Mineralogical and Petrological Sciences 100 55-692005synthetic0373
0013134TridymiteHirose T, Kihara K, Okuno M, Fujinami S, Shinoda K (2005) X-ray, DTA and Raman studies of monoclinic tridymite and its higher temperature orthorhombic modification with varying temperature. Journal of Mineralogical and Petrological Sciences 100 55-692005synthetic0413
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.30 Å(100)
4.09 Å(90)
3.80 Å(60)
3.249 Å(30)
2.964 Å(16)
2.483 Å(16)
2.305 Å(8)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 1: Primary nebular phases4.567-4.561
4 : Primary chondrule phases4.566–4.561
Stage 2: Planetesimal differentiation and alteration4.566-4.550
5 : Primary asteroid phases4.566–4.560
Stage 3a: Earth’s earliest Hadean crust>4.50
9 : Lava/xenolith minerals (hornfels, sanidinite facies)
10 : Basalt-hosted zeolite minerals
Stage 4a: Earth’s earliest continental crust>4.4-3.0
20 : Acidic volcanic rocks
Near-surface Processes
26 : Hadean detrital minerals
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
50 : Coal and/or oil shale minerals<0.36
Stage 10b: Anthropogenic minerals<10 Ka
54 : Coal and other mine fire minerals (see also #51 and #56)
Geological Setting:
Vapor phase deposition in vesicles and lithophysae, phenocrysts in volcanic rocks, contact metamorphosed sandstones.

Type Occurrence of TridymiteHide

Reference:
vom Rath, G. (1868) Vorläufige Mitteilung über eine neue Kristallform der Kieselsäure (Tridymit). Annalen der Physik und Chemie: 209: 507.

Synonyms of TridymiteHide

Other Language Names for TridymiteHide

Dutch:Tridymiet
Estonian:Tridümiit
French:Tridymite
Japanese:鱗珪石
Polish:Trydymit
Portuguese:Tridimita
Simplified Chinese:鳞英石
Slovak:Tridymit
Traditional Chinese:鳞英石

Varieties of TridymiteHide

ChristenseniteName given to a solid solution of 5 % NaAlSiO4 in tridymite from a lava at Deception Island, Western Antartica found during the Norwegian Antartic expeditions 1927-1928.

Common AssociatesHide

Associated Minerals Based on Photo Data:
254 photos of Tridymite associated with HematiteFe2O3
91 photos of Tridymite associated with PhlogopiteKMg3(AlSi3O10)(OH)2
78 photos of Tridymite associated with FayaliteFe2+2SiO4
73 photos of Tridymite associated with PseudobrookiteFe2TiO5
62 photos of Tridymite associated with EnstatiteMg2Si2O6
49 photos of Tridymite associated with TitaniteCaTi(SiO4)O
42 photos of Tridymite associated with MagnetiteFe2+Fe3+2O4
41 photos of Tridymite associated with EdeniteNaCa2Mg5(Si7Al)O22(OH)2
39 photos of Tridymite associated with Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
34 photos of Tridymite associated with QuartzSiO2

Related Minerals - Strunz-mindat GroupingHide

4.DA.ChibaiteSiO2 · n(CH4, C2H6, C3H8, i-C4H10) (n = 3/17 (max))Iso. m3 (2/m 3) : Fd3
4.DA.Carbon Dioxide IceCO2
4.DA.BosoiteSiO2 · nCxH2x+2Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
4.DA.05QuartzSiO2Trig. 3 2 : P31 2 1
4.DA.10OpalSiO2 · nH2O
4.DA.15CristobaliteSiO2Tet. 4 2 2 : P41 21 2
4.DA.20MogániteSiO2Mon. 2/m
4.DA.25Melanophlogite46SiO2 · 6(N2,CO2) · 2(CH4,N2)Tet. 4/mmm (4/m 2/m 2/m)
4.DA.30LechatelieriteSiO2Amor.
4.DA.35CoesiteSiO2Mon. 2/m : B2/b
4.DA.40StishoviteSiO2Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
4.DA.45KeatiteSiO2Tet. 4 2 2 : P43 21 2
4.DA.50SeifertiteSiO2Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DA.55Quartz-betaSiO2Hex. 6 2 2 : P64 2 2

Other InformationHide

Thermal Behaviour:
High tridymite or β-tridymite forms between 870 and 1470°C.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for TridymiteHide

References for TridymiteHide

Reference List:

Localities for TridymiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Antarctica
 
  • Eastern Antarctica
    • Buckley Island quadrangle
      • Lewis Cliff
Ruzicka et al. (1999)
Meteorlogical Bulletin
    • Pecora Escarpment
      • LaPaz Ice Field
Izawa et al. (2010)
aaa.wustl.edu (2005)
    • Queen Maud Land
      • Queen Fabiola Mts
curator.jsc.nasa.gov (2013)
Ohgo et al. (2017)
    • Victoria Land
      • Ross Archipelago
        • Ross Island
Browne
Collection of RJ Martin
  • Western Antarctica
    • Antarctic Peninsula
      • South Shetland Islands
Barth et al. (1944)
Argentina
 
  • Río Negro Province
    • Ñorquincó Department
      • Mamuel Choique
CRAVERO +1 other reference
  • Salta Province
    • Los Andes department
      • San Antonio de los Cobres
        • El Quevar mining district
ROBL +1 other reference
Australia
 
  • New South Wales
    • Brisbane Co.
      • Wingen
Rattigan (1967)
    • Cadell Co.
      • Womboota
Lovering (1975)
    • Durham Co.
      • Muswellbrook
        • Mount Arthur Coal Mine Complex
Loughnan et al. (1960)
    • King Co.
      • Crookwell
Garcia et al. (1978)
    • Yancowinna Co.
      • Broken Hill district
Birch (1999)
  • Queensland
    • Western Downs Region
      • Moonie
Ikeda et al. (1996) +1 other reference
  • South Australia
    • Flinders Ranges
      • North Flinders Ranges
        • Arkaroola Region (Arkaroola Wilderness Sanctuary; Arkaroola Station)
          • Mt Painter area
Noble et al. (1983)
    • Murray Basin
      • Murray Mallee
        • Pinnaroo
Floran et al. (1978) +2 other references
    • Olary Province
      • Weekeroo Station
Bunch et al. (1970) +1 other reference
  • Tasmania
    • Clarence city
Bottrill et al. (2020)
  • Victoria
    • City of Ballarat
Sorrell (n.d.)
    • City of Greater Geelong
      • Anakie
Judy Rowe collection
Museum Victoria Mineralogy Collection
    • Colac Otway Shire
      • Colac
Sorrell (n.d.)
      • Ondit
Sorrell (n.d.)
    • Macedon Ranges
Museum Victoria M 44321
    • Moyne Shire
      • Mortlake
Birch et al. (2008)
  • Western Australia
    • Kalgoorlie-Boulder Shire
Chennaoui Aoudjehane et al. (2007)
    • Meekatharra Shire
      • Mount Padbury Station
McCall et al. (1966) +2 other references
    • Yalgoo Shire
      • Dalgaranga Station
Mittlefehldt et al. (1998)
Austria
 
  • Burgenland
    • Oberpullendorf District
      • Markt Sankt Martin
        • Pauliberg
Schebesta (1983) +2 other references
    • Oberwart District
      • Kohfidisch
Götzinger et al. (2009)
  • Carinthia
    • Sankt Veit an der Glan District
      • Hüttenberg
Niedermayr et al. (1995)
  • Lower Austria
    • Melk District
      • Persenbeug-Gottsdorf
Dominik Sorger: „Mineralogical ...
  • Styria
    • Südoststeiermark District
      • Bad Gleichenberg
        • Klausen
Exel (1993)
        • Wilhelmsdorf
W. Postl et al.: European Journal of Mineralogy 16 (2)
      • Feldbach
        • Mühldorf bei Feldbach
Postl et al. (1996)
      • Klöch
Lapis 2003 (1) +1 other reference
Azerbaijan
 
  • Aghjabadi District
    • Hindarx
rruff.geo.arizona.edu (n.d.) +1 other reference
Bangladesh
 
  • Chittagong Division
    • Comilla District
Powell (1971) +1 other reference
Belarus
 
  • Brest Region
    • Stolin District
Prinz et al. (1980)
Belgium
 
  • Wallonia
    • Liège
      • Plombières
Blaß et al. (1995b)
Bolivia
 
  • Oruro
    • Carangas Province
Federico Ahlfeld y Jorge Muñoz Reyes (1955)
Kempff et al. (La Paz, 2009)
Brazil
 
  • Minas Gerais
    • Martinho Campos
      • Ibitira
Steele et al. (1976)
  • Pará
    • São Geraldo do Araguaia
Revista Brasileira de Geociências
  • Pernambuco
    • Alagoinha
Duke (1967)
  • Piauí
    • Nazaré do Piauí
Costa et al. (2016)
Burundi
 
  • Bujumbura Rural Province
Van Wambeke ( The Karonge rare earth deposits, Republic of Burundi: New mineralogical-geochemical data and origin of the mineralization. Mineralium Deposita. 12 )
Canada
 
  • Alberta
    • Sturgeon County
Kimura et al. (2005)
  • Nova Scotia
    • Halifax Co.
      • Musquodoboit Harbour
Friedlaender (1968)
Chile
 
  • Antofagasta
    • Antofagasta Province
      • Taltal
with analyses of Vaca Muerta +2 other references
China
 
  • Guizhou
    • Guiyang
      • Qingzhen County
Rambaldi et al. (1986)
  • Inner Mongolia
    • Xilingol League (Xilinguole Prefecture)
      • Duolun County
Jia Li et al. (1998)
Jia Li et al. (1998)
      • East Ujimqin Banner (Dongwuzhumuqin Co.; Dongwu Qi)
Grossman (1997)
  • Jiangsu
    • Huai'an
      • Xuyi Co.
Tianhu Chen et al. (2002)
  • Shanxi
    • Yangquan
      • Kuang District
Querol +9 other references
Costa Rica
 
  • Alajuela Province
    • Sarchí Canton
Rodríguez et al. (2017)
Czech Republic
 
  • Hradec Králové Region
    • Trutnov District
      • Radvanice
Jirásek (2001)
  • Ústí nad Labem Region
    • Teplice District
Žáček V
  • Zlín Region
    • Uherské Hradiště District
      • Komňa
Pauliš
Szakáll (2002)
Ecuador
 
  • Pichincha Province
    • Quito Canton
      • Tumbaco
vom Rath (1872)
El Salvador
 
  • Usulután Department
    • Berlín
Torio-Henríquez (2007)
Equatorial Guinea
 
  • Insular Region
Mitchell-Thomé (1970) +6 other references
Estonia
 
  • Viljandi County
    • Pillistfer (Pilistvere)
Keil (1968) +1 other reference
Faroe Islands
 
  • Streymoy Region
    • Streymoy
Caucia et al. (2013)
Finland
 
  • Satakunta
    • Huittinen
Keil (1968)
  • South Karelia
    • Savitaipale
Prinz et al. (1980)
  • South Ostrobothnia
    • Lappajärvi
Lehtinen et al. (toim.)
France
 
  • Auvergne-Rhône-Alpes
    • Ardèche
      • Largentière
        • Labastide-sur-Bésorgues
Bertwerth (1912) +1 other reference
    • Cantal
      • Aurillac
        • Vic-sur-Cère
          • Saint-Jacques-des-Blats
Alfred Lacroix (1890's)
      • Mauriac
        • Menet
Varet (1970) +1 other reference
      • Saint-Flour
        • Albepierre-Bredons
Fermis (2023)
        • Laveissière
          • Le Lioran
Vernay R. (2005)
    • Drôme
      • Die
        • Saint-Jean-en-Royans
M. Christophe Michel-Lévy
    • Haute-Loire
      • Le Puy-en-Velay
        • Espaly-Saint-Marcel
Barrier D et al. (2004)
    • Puy-de-Dôme
      • Issoire
        • Besse-et-Saint-Anastaise
Müller et al. (2023)
        • Chastreix
In Collection micromounts Eric Naud ( FRANCE )
Designolle (1996)
        • Mont-Dore
Alain Tuel collection
P & E Médard collection
Médard et al. (2021)
        • Murat-le-Quaire
Pierre Le Roch Collection
        • Perpezat
Valverde (2009)
      • Riom
        • Saint-Ours-les-Roches
Médard P. et al. (2009)
  • Martinique
    • Arrondissement of La Trinité
      • Grand'Rivière
Lacroix (1910)
  • Normandy
    • Manche
      • Avranches
        • Le Teilleul
Prinz et al. (1980)
Georgia
 
  • Racha-Lechkhumi and Kvemo Svaneti
    • Svaneti District
Kekelia et al. (2017)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Breisgau-Hochschwarzwald
        • Vogtsburg im Kaiserstuhl
          • Oberrotweil
in the collection of Christof Schäfer
      • Schwarzwald-Baar-Kreis
        • Blumberg
          • Randen
Grubenmann (1886)
      • Tuttlingen
        • Immendingen
Weiß (1990)
    • Karlsruhe Region
      • Freudenstadt
        • Bad Rippoldsau-Schapbach
          • Wildschapbach valley
Wittern (2001)
  • Bavaria
    • Lower Franconia
      • Haßberge District
        • Maroldsweisach
Wittern (2001)
    • Upper Palatinate
      • Tirschenreuth District
        • Kulmain
Weiß (1990)
        • Wiesau
          • Triebendorf
Pöllmann et al. (1990)
  • Hesse
    • Darmstadt
      • Darmstadt-Dieburg
        • Roßdorf
Weiß (1990)
    • Giessen Region
      • Giessen
        • Rabenau
          • Londorf
Weiß (1990)
      • Vogelsbergkreis
        • Mücke
          • Ober-Ohmen
Betz (2019)
    • Kassel Region
      • Hersfeld-Rotenburg
        • Cornberg
Müller (1967)
      • Schwalm-Eder
        • Felsberg
          • Rhünda
Collection of Walter Göttler
      • Werra-Meißner
        • Eschwege
Koritnig (1955)
  • North Rhine-Westphalia
    • Arnsberg
      • Hochsauerlandkreis
        • Arnsberg
          • Hüsten
D. Pawlowski: "Mineralfundstellen im Sauerland" (Munich)
      • Märkischer Kreis
        • Iserlohn
          • Letmathe
Schnorrer-Köhler (1986) +1 other reference
    • Cologne
      • Aachen
        • Stolberg
Blaß et al. (1995)
International Association of Collectors ... +1 other reference
      • Rhein-Sieg-Kreis
        • Königswinter
Rath et al. (1868)
vom Rath (1872)
Rath et al. (1868)
Brauns et al. (1922)
Brauns et al. (1922)
    • Detmold
      • Höxter
        • Willebadessen
          • Peckelsheim
Ramdohr (1969)
      • Minden-Lübbecke
        • Minden
Floran et al. (1978) +1 other reference
  • Rhineland-Palatinate
    • Ahrweiler
      • Bad Breisig
        • Brohl-Lützing
Hentschel (1975)
      • Brohltal
        • Burgbrohl
Weiß (1990)
        • Spessart
          • Hannebach
Brauns (1922)
    • Bad Kreuznach
      • Rüdesheim
        • Waldböckelheim
Streng (1871)
    • Bernkastel-Wittlich
      • Wittlich-Land
        • Bettenfeld
Weiß (1990)
    • Mayen-Koblenz
      • Maifeld
        • Ochtendung
Weiß (1990)
Weiß (1990)
Personally collected by Günter Frenz
Lapis 1988 (7+8)
      • Mayen
Hentschel (1983)
Lehmann (1877)
      • Mendig
        • Bell
Hentschel (1983)
        • Mendig
Brauns
          • Wingertsberg
collection C.&H. Schäfer
      • Pellenz
        • Kruft
Leu (2017)
        • Nickenich
Hentschel (1983)
Hentschel (1983)
      • Vordereifel
        • Ettringen
Hentschel (1975)
Lehmann (1877)
        • Kottenheim
Lehmann (1877)
    • Vulkaneifel
      • Daun
        • Hinterweiler
Christof Schäfer
        • Kirchweiler
Personally collected by Günter Frenz
        • Oberstadtfeld
Leu
        • Schalkenmehren
Weiß (1990)
        • Strohn
Personally collected by Günter Frenz
        • Üdersdorf
Schäfer
Guth et al. (Löley)
        • Utzerath
Weiß (1990)
      • Gerolstein
        • Gerolstein
          • Roth
Blaß et al. (2012)
        • Oberehe-Stroheich
Weiß (1990)
        • Rockeskyll
          • Rockeskyll volcanic complex
Hentschel (1983)
Hentschel (1987)
        • Steffeln
Wittern (2001)
        • Walsdorf
Blaß (2020)
      • Kelberg
        • Drees
Schüller
        • Reimerath
Weiß (1990)
  • Saxony
    • Bautzen District
      • Oßling
Wittern (2001)
      • Wittichenau
Lapis (1)
    • Erzgebirgskreis
      • Schönheide
Reid et al. (1973) +1 other reference
Tuček K.: Meteority a jejich výskyt v ...
    • Görlitz District
      • Königshain
Witzke et al. (2012)
      • Thiemendorf
Witzke et al. (2012)
      • Vierkirchen
        • Döbschütz
          • Arnsdorf-Melaune Quarry
T. Witzke & T. Giesler (2001)
Witzke et al. (2012)
    • Mittelsachsen
      • Waldheim
Thomas et al. (2022)
    • Zwickau District
      • Callenberg
WITZKE (2018)
  • Thuringia
    • Greiz District
      • Kauern
T. Witzke & F. Rüger: Lapis 1998 (7/8)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
Hanke (1996)
  • Central Macedonia
    • Serres
      • Serres
Hezel (2006)
  • North Aegean
    • Samos
      • Western Samos
Econ Geol (1989)
Greenland
 
  • Sermersooq
Lindsley et al. (1969)
Hungary
 
  • Borsod-Abaúj-Zemplén County
    • Gönc District
      • Abaújszántó
Szakáll: Topographia Mineralogica ...
Szakáll: Topographia Mineralogica ...
Szakáll & Jánosi : Minerals of Hungary
Geoda Nr. 1 (2010)
      • Telkibánya
Szakáll-Weiszburg: Telkibánya
    • Sárospatak District
Szakáll et al. (1996)
Bulletin of the Hungarian Geological ...
    • Sátoraljaújhely District
      • Bózsva
Collection of Gábor _Mesics
Szakáll et al. (1996)
      • Hollóháza
      • Nagyhuta
Szakáll et al. (1996)
Szakáll et al. (1996)
    • Szerencs District
      • Megyaszó
Szakáll et al. (1996)
      • Monok
Szakáll: Topographia Mineralogica ...
Szakáll: Topographia Mineralogica ...
Szakáll: Mineralogica Topographia ...
    • Tokaj District
Szakáll et al. (1996)
      • Erdőbénye
geomania.hu (2011)
Society of Economic Geologists Student Chapter University of Miskolc (2018)
Mineral Species of Hungary
Szakáll
  • Heves County
    • Gyöngyös District
      • Abasár
Szakáll-Jánosi: Minerals of Hungary
      • Gyöngyössolymos
      • Kisnána
Szakáll et al. (2010)
      • Markaz
www.mineral.hermuz.hu (2003)
    • Pétervására District
      • Recsk
Szakáll-Gatter-Szendrei:Mineral ...
  • Nógrád County
    • Nagylóc
Mineral Species of Hungary
    • Sámsonháza
Szakáll et al. (1996)
  • Pest County
    • Szob District
      • Márianosztra
  • Szabolcs-Szatmár-Bereg County
    • Tarpa
Koch: Minerals of Hungary
Iceland
 
  • Northeastern Region
    • Þingeyjarsveit
      • Skútustaðahreppur
        • Myvatn
Found by Björn Mamat (inclusions in Obsidian)
India
 
  • Tamil Nadu
    • Ramanathapuram district
Bridges et al. (1995)
  • West Bengal
    • Paschim Bardhaman District
      • Raniganj Coalfield
        • Victoria West Colliery
Indonesia
 
  • Banten Province
    • Lebak Regency
Sun et al. (2008)
  • Lampung Province
    • Krakatoa volcanoes (Krakatau)
      • Krakatoa Island (Krakatau Island)
G. Camus et al. (Indonesia)
  • Papua Province
    • Mimika Regency
      • Gunung Bijih District (Grasberg District)
Hartiningsih et al. (2022)
Iran
 
  • Tehran Province
    • Karand
Powell (1971) +1 other reference
Israel
 
  • Southern District (HaDarom District)
    • Tamar Regional Council
      • Hatrurim Basin
Britvin et al. (2019)
Italy
 
  • Campania
    • Naples
      • Ischia Island
Bortolozzi (n.d.)
      • Somma-Vesuvius Complex
[vom Rath et al. (1872) +1 other reference
  • Lazio
    • Latina Province
      • Ponza
        • Ponza Island
E. Passaglia et al.
    • Metropolitan City of Rome Capital
      • Campagnano di Roma
Bortolozzi (n.d.)
      • Cerveteri
        • Sasso di Furbara (Sasso)
Barrese et al. (1994)
    • Rieti Province
      • Rieti
        • Santa Rufina
Microprobe analysis by Victor Sharygin (Novosibirsk, Russia)
    • Viterbo Province
      • Cellere
Burli et al. (2010)
forum.amiminerals.it (n.d.)
      • Montalto di Castro
        • Pietra Massa Locality
Bortolozzi (n.d.)
      • Soriano nel Cimino
Federico (1968) +1 other reference
      • Valentano
in the collection of Luigi Mattei
Collected & analized by Rossano Carlini
Bortolozzi (n.d.)
  • Sardinia
    • Oristano Province
      • Marrubiu
De Michele (1974) +1 other reference
Bortolozi G. (1986)
      • Masullas
Sitta et al. (1983)
      • Pau
Urraci E.- Lini M. – Mattias P. (2006)
    • Sassari Province
Gamboni et al. (2021)
Bortolozzi (n.d.)
Boscardin. M. (1975)
    • South Sardinia Province
      • Portoscuso
samples collected by Luigi Chiappino +1 other reference
  • Sicily
    • Metropolitan City of Catania
      • Biancavilla
Preite D. : I minerali etnei di Biancavilla (CT) +1 other reference
    • Metropolitan City of Messina
      • Eolie Islands (Aeolian Islands)
        • Lipari
Bergeat (1900)
          • Vulcano Island
MERCALLI G. (1891)
  • Tuscany
    • Grosseto Province
      • Pitigliano
Liotti L. (Grosseto)
    • Livorno Province
Barsotti et al. (2006)
  • Umbria
    • Perugia Province
      • Spoleto
Wheeler et al. (1996) +1 other reference
  • Veneto
    • Padova Province
      • Baone
Zorzi (2014)
      • Cinto Euganeo
Fabris et al. (2014) +1 other reference
      • Torreglia
Neubauer (2005) +1 other reference
      • Vo'
Del Caldo et al. (1973)
    • Verona Province
      • San Giovanni Ilarione
Mattioli et al. (2008) +1 other reference
    • Vicenza Province
      • Gambellara
        • S. Marco hill
"Minerali del Vicentino - La natrolite" ...
Japan
 
  • Gunma Prefecture
    • Kiryu City
      • Akagi volcano
Koga (1982)
  • Kagoshima Prefecture
    • Hishikari Au mine
Ibaraki et al. (1991)
    • Kagoshima District
      • Mishima village
S. Hamasaki (2002)
S. Hamasaki (2002)
S. Hamasaki (2002)
S. Hamasaki (2002)
Miyashiro (1956)
    • Satsumasendai City
      • Iriki
Alfredo Petrov - unpublished documents
  • Kanagawa Prefecture
    • Ashigarashimo District
      • Yugawara
  • Kumamoto Prefecture
    • Kumamoto City
Sadanaga et al. (1974) +1 other reference
  • Nagano Prefecture
Sadanaga et al. (1974)
  • Oita Prefecture
    • Hayami District
in the collection of Christof Schäfer
  • Shizuoka Prefecture
    • Kamo district
      • Higashiizu
Collected by Alfredo Petrov
  • Yamanashi Prefecture
Kato (2009)
Jordan
 
  • Amman Governorate
    • Transjordan Plateau
      • Daba-Siwaqa complex
Galuskin et al. (2023)
Kenya
 
  • Laikipia County
Schulze et al. (1994)
Lebanon
 
  • South Governorate
    • Jezzine District
Kruszewski et al. (South Lebanon)
Lithuania
 
  • Utena County
    • Anyksciu
      • Androniski
Bukovanská et al. (1991) +1 other reference
Madagascar
 
Lacroix (1922)
  • Vakinankaratra
    • Ambatolampy District
      • Tsiafajavona Ankaratra
Behier (1963)
    • Betafo District
      • Ambatonikolahy
Lacroix (1922)
Malawi
 
  • Central Region
    • Nkhotakota
Mason (1966)
Mauritania
 
  • Adrar Region
    • Chinguetti
Mittlefehldt et al. (1998)
Mexico
 
  • Durango
    • Coneto de Comonfort Municipality
      • Coneto de Comonfort
    • Durango Municipality
      • Cerro de los Remedios
        • Victoria de Durango
Panczner (1987)
    • Pánuco de Coronado Municipality
      • Francisco I. Madero
[AmMin 85:263]
  • Guanajuato
    • Santa Catarina Municipality
      • Santa Catarina
        • Cerro de las Fajas
Am Min (1955)
  • Hidalgo
    • Pachuca Municipality
Annalen der Physik und Chemie +1 other reference
  • Michoacan
    • Contepec Municipality
      • Tepoxtepec (?Tepuxtepec)
Foshag et al. (1942)
  • San Luis Potosí
    • Villa de Arriaga Municipality
Panczner (1987)
  • Tamaulipas
    • Nuevo Laredo Municipality
Sarafian et al. (2013)
Middle East
 
Vapnik et al. (2006)
Mongolia
 
  • Govi-Altai Province
    • Altai District
Bischoff (1993) +2 other references
Morocco
 
  • Oriental Region
    • Nador Province
      • Nador
Luetcke (n.d.)
Namibia
 
  • Erongo Region
    • Dâures Constituency
von Bezing (2007)
  • Hardap Region
    • Gibeon
Petaev et al. (1997, March) +1 other reference
Netherlands
 
  • Limburg
    • Eijsden-Margraten
      • Cadier en Keer
T.G. Nijland
    • Maastricht
      • Pietersberg
T.G. Nijland
New Zealand
 
  • Auckland Region
    • Waitakere Ranges
Collection of RJ Martin
  • Bay of Plenty Region
    • Kawerau District
www.mightyriver.co.nz (n.d.)
    • Mayor Island (Tuhua)
Collection of RJ Martin
    • Rotorua District
      • Mount Ngongotaha
Martin Stolworthy Collection
      • Okataina
Cole (1970)
Cody et al. (1979)
  • Canterbury Region
    • Christchurch City
      • Banks Peninsula
        • Lyttelton
Marshal (1893) +1 other reference
  • Manawatu-Whanganui Region
    • Ruapehu District
      • Ohakune
Hackett W R.
  • New Zealand Outlying Islands
    • Kermadec Islands
Lloyd et al. (1996)
  • Northland Region
    • Kaipara District
      • Kaipara Harbour
Sutherland et al. (ed.)
  • Waikato Region
    • Hauraki District
      • Waihi Beach
Collection of RJ Martin correlated to ...
    • Taupo District
Brown et al. (1994)
      • Atiamuri
Personal collection of Rod Martin
      • Lake Taupo
Judy Rowe collection
Collection of Rod Martin
Collection of RJ Martin
Thornton (Ed.)
Collection of Rod Martin
Collection of RJ Martin
Essence of Microscope
      • Poihipi Road
Collection of RJ Martin correlated to ...
Collection of RJ Martin correlated to ...
Collection of RJ Martin correlated to ...
    • Thames-Coromandel District
      • Coromandel peninsula
Smith
      • Hikuai
Collection of RJ Martin correlated to ...
        • Puketui Road mordenite locality
Moore (1979)
        • Tairua River
R. Martin. Tairua Essence of Microscope
Collection of RJ Martin correlated to ...
Nicaragua
 
  • León Department
Hynek et al. (2013)
Nigeria
 
  • Bauchi
    • Dass
Mason (1967)
Northwest Africa Meteorites
 
Meteoritical Bulletin et al. (2001)
Srinivasan et al. (2018)
Oman
 
  • Al Wusta Governorate
    • Sayh al Uhaymir
The Meteoritical Bulletin
Pakistan
 
  • Punjab Province
    • Bahawalpur District
Keil (1968)
  • Sindh Province
    • Khairpur District
Brian Mason (1966)
Panama
 
Papua New Guinea
 
  • New Ireland Province
    • Dyaul Island
Mason et al. (1973) +1 other reference
  • West New Britain Province
Lowder (1970)
Peru
 
  • Cajamarca
    • Cajamarca Province
      • Cajamarca District
Dill et al. (1997)
Philippines
 
  • Luzon
    • Calabarzon Region
      • Quezon province
H. J. Axon and M. J. Nasir (1977)
Poland
 
  • Lower Silesian Voivodeship
    • Dzierżoniów County
      • Gmina Niemcza
        • Gilów
Lis et al. (1986)
    • Świdnica County
      • Gmina Strzegom
        • Strzegom
Trippke P. ( 1878)
    • Ząbkowice Śląskie County
      • Gmina Ciepłowody
Lis et al. (1986)
  • Lublin Voivodeship
    • Zamość County
Ma et al. (2012)
  • Łódź Voivodeship
    • Łowicz County
Benjamin N. Powell (1969)
  • Opole Voivodeship
    • Krapkowice County
      • Gmina Zdzieszowice
Chodyniecka (1967) +1 other reference
    • Strzelce County
      • Gmina Leśnica
        • Góra Świętej Anny
Góra Św. Anny 2007
  • Podlaskie Voivodeship
    • Bialystok City
Duke et al. (1967)
  • Silesian Voivodeship
    • Bytom
      • Bobrek
Ł. Kruszewski EPMA/PXRD data +1 other reference
    • Rybnik
      • Chwałowice
Ciesielczuk et al. (2014)
    • Wodzisław County
      • Rydułtowy
        • ROW Ruch Rydułtowy Mine
Kruszewski et al. (2019)
Portugal
 
  • Lisbon
    • Sintra
      • Almargem do Bispo,Pêro Pinheiro e Montelavar
Rui Nunes collection 2011/2012
      • Pêro Pinheiro e Montelavar
        • Almargem do Bispo
Rui Nunes collection
  • Madeira
    • Madeira Island
      • Ribeira Brava
        • Serra de Água
          • Boca da Encumeada pass
CEDOM
  • Vila Real
    • Chaves
      • Vilarelho da Raia
        • Vilarelho da Raia
Mason B. (1979) +2 other references
Romania
 
  • Brașov County
Szakáll
Szakáll et al. (2010)
  • Covasna County
Szakáll et al. (2010)
  • Hunedoara County
    • Simeria
König et al. (2001)
Russia
 
  • Chelyabinsk Oblast
Cesnokov et al. (1998)
    • Korkinsky District
Sharygin et al. (2010)
  • Kabardino-Balkaria
    • Elbrus Mt
Gurbanov et al. (2008)
  • Kamchatka Krai
    • Milkovsky District
      • Tolbachik Volcanic field
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
            • Second scoria cone
Sidorov (2019)
    • Yelizovsky District
Kaminsky et al. (2016)
      • Kronotsky Reserve
Active Volcanoes of Kamchatka
      • Mutnovsky volcano
Zhitova et al. (2022)
Frolova et al. (2010, April)
  • Kemerovo Oblast
Bortnikova et al. (2017)
  • Komi Republic
    • Ust'kulom district
Migdisova et al. (1988) +1 other reference
  • Krasnodar Krai
    • Taman Peninsula
Kokh et al. (2023)
  • Krasnoyarsk Krai
    • Evenkiysky District
Sokol et al. (2019)
    • Taymyrsky Dolgano-Nenetsky District
Masaitis (1998)
  • Magadan Oblast
    • Severo-Evensky District
Lavrentjeva et al. (2013)
  • Murmansk Oblast
    • Khibiny Massif
      • Koashva Mt
Khomyakov et al. (2002)
  • Nizhny Novgorod Oblast
Skripnik (1980) +1 other reference
  • Orenburg Oblast
    • Svetlyi District
      • Buruktal District
        • Buruktal massif
Talovina et al. (2003)
  • Republic of Karelia
Zamiatina et al. (2023)
  • Sakhalin Oblast
    • Kuril Islands (Kurile Islands)
      • Kurilsky District
        • Iturup Island
Frolova et al. (2010, April)
maurice.strahlen.org (2004) +1 other reference
      • Severo-Kurilsky District
        • Atlasov Island
Zhitova et al. (2020)
Vergasova et al. (1977) +1 other reference
  • Saratov Oblast
    • Pavlovka
Prinz et al. (1980)
  • Zabaykalsky Krai
    • Aginsky District
Prinz et al. (1980) +1 other reference
Saudi Arabia
 
  • Tabuk Region
Kraut et al. (1971) +1 other reference
Slovakia
 
  • Banská Bystrica Region
    • Banská Bystrica District
      • Badín
Koděra (1986)
    • Krupina District
      • Hontianske Nemce
Koděra (1986)
    • Žarnovica District
      • Žarnovica
Koděra (1986)
    • Žiar nad Hronom District
Koděra (1986)
      • Hliník nad Hronom
Koděra (1986)
      • Kremnica
Ďuďa (1993)
  • Košice Region
    • Košice-okolie District
Koděra (1986)
Myšľan P. 2020: Minerály z lomov ...
      • Slanec
Pauliš P.
    • Michalovce District
      • Poruba pod Vihorlatom
Bacsó
    • Sobrance District
      • Remetské Hámre
Bacsó
    • Trebišov District
Pauliš P.
Koděra
      • Viničky
Kaličiak
  • Nitra Region
    • Levice District
Koděra (1986)
  • Prešov Region
    • Prešov District
      • Červenica
        • Dubník
Koděra (1986)
Koděra (1986)
      • Gregorovce
Duda eut al.
      • Okružná
Duda et all.
Myšľan P. (2021)
      • Zlatá Baňa
Duda et. all.
    • Snina District
Pauliš
    • Vranov nad Topľou District
      • Banské
Duda et all.
Koděra (1986)
      • Juskova Voľa
Duda et all.
      • Vechec
Ďuďa
  • Žilina Region
    • Námestovo District
      • Námestovo
        • Slanica
Koděra (1986)
South Africa
 
  • Northern Cape
    • John Taolo Gaetsewe District Municipality
      • Joe Morolong Local Municipality
Cairncross et al. (1995) +1 other reference
    • ZF Mgcawu District Municipality
      • Kgatelopele Local Municipality
        • Daniëlskuil
Kimura et al. (2005)
  • Western Cape
    • Cape Winelands District Municipality
      • Drakenstein Local Municipality
        • Simondium
Floran et al. (1978) +1 other reference
South Sudan
 
  • Eastern Equatoria
    • Kapoeta
Duke (1967)
Spain
 
  • Andalusia
    • Granada
      • Colomera
  • Castile-La Mancha
    • Albacete
      • Elche de la Sierra
Abad +3 other references
  • Catalonia
    • Girona
      • Bescanó
Joaquim Mollfulleda
  • La Rioja
    • Entrena
      • Varea
Mason et al. (1973) +2 other references
  • Murcia
    • Cartagena
      • La Aljorra
Sevillano et al. (2009)
    • Jumilla
      • La Celia lamproite outcrops
Tajikistan
 
  • Sughd
    • Zeravshan Range
      • Yagnob River
Sharygin et al. (2009)
Tunisia
 
S Tunisia +1 other reference
Turkey
 
  • Kayseri Province
    • Talas District
      • Kiranardi
        • Erciyes volcanic complex
          • Kültepe
            • Hisarcık
Sarp et al. (2005)
  • Kütahya Province
    • Simav District
Özen et al. (2013)
UK
 
  • England
    • Cornwall
      • St Merryn
Golley et al. (1995)
  • Northern Ireland
    • Co. Antrim
      • Antrim
www.habitas.org.uk (n.d.) +1 other reference
      • Cushendall
Chinner et al. (1973)
    • Co. Londonderry
Mittlefehldt (1998)
Ukraine
 
  • Zaporizhia Oblast
    • Vasylivka Raion
Labotka et al. (1980)
USA
 
  • Alabama
    • Franklin County
Duke (1967)
  • Arizona
    • Gila County
      • Clover Springs
Prinz et al. (1980) +1 other reference
    • Greenlee County
      • Big Lue Mountains (Big Laue Mountain)
Anthony et al. (1995)
Grundel (2002)
    • Mohave County
      • Cerbat Mountains (Cerbat Range)
        • Wallapai Mining District
          • Chloride Mining District
Thomas (1953) +1 other reference
      • White Hills
Meteoritics & Planetary Science 36 (2001)
    • Pima County
      • Batamote Mountains
Data provided by Janet Clifford
Galbraith (1959) +1 other reference
    • Santa Cruz County
      • Patagonia Mountains
        • Harshaw Mining District
          • Alum Gulch
            • Aztec Gulch
Schrader (1915)
  • Arkansas
    • Garland County
Rocks & Min. (1995) +1 other reference
  • California
    • Imperial County
      • Salton Sea
Van Nostrand Reinholt Press: 351. +5 other references
    • Inyo County
      • Lake Tecopa Basin
Starkey et al. (1979) +1 other reference
      • Sperry Hills
        • Tecopa
Martin et al. (2020)
      • Sugarloaf Mountain
Rogers (1922) +1 other reference
Pemberton (1983)
    • Kern County
      • Boron
Cal Div of Mines & Geology "Mineral ...
Anderson (1936) +1 other reference
      • Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District)
        • Lower Lake
          • Seigler Canyon Creek
Anderson (1936) +2 other references
    • Los Angeles County
      • Agoura Hills
M.Chorazewicz collection
      • Puente Hills
Van Nostrand Reinholt Press: 353. +2 other references
Rogers (1928) +1 other reference
    • Marin County
      • Petaluma area
Van Nostrand Reinholt Press: 354. +2 other references
    • Mono County
Van Nostrand Reinholt Press: 354. +2 other references
      • New Range
        • Rickey Peak
Schaller (1905b) +1 other reference
    • Plumas County
Rogers (1933) +1 other reference
      • Portola
Van Nostrand Reinholt Press: 354. +2 other references
    • San Bernardino County
      • East Kramer Mining District
        • East Kramer Borate area (East Kramer Colemanite area)
MarekC (2018) +1 other reference
      • Robbers Mountain
Perry +1 other reference
    • San Diego County
      • Fallbrook
Van Nostrand Reinholt Press: 354. +3 other references
    • San Luis Obispo County
Van Nostrand Reinholt Press: 354. +3 other references
      • Santa Lucia Mts (Santa Lucia Range)
        • Cambria-Oceanic Mining District
          • Cambria
Murdoch (1966)
    • Shasta County
      • Klamath Mountains
        • East Shasta Copper - Zinc Mining District
          • Round Mountain
Van Nostrand Reinholt Press: 381. +5 other references
      • Lassen Volcanic National Park
Van Nostrand Reinholt Press: 354. +3 other references
    • Sonoma County
      • Santa Rosa
Van Nostrand Reinholt Press: 438. +2 other references
      • West Mayacmas Mining District
Murdoch (1966) +1 other reference
    • Trinity County
      • Klamath Mountains
        • Hyampom
Van Nostrand Reinholt Press: 318. +3 other references
    • Tuolumne County
      • Jamestown District
        • Jamestown
Rogers (1912) +3 other references
  • Colorado
    • Chaffee County
      • Nathrop
USGS Bull 1716C +1 other reference
    • Conejos County
      • Manassa
Eckel et al. (1997)
    • Custer County
      • Rosita Mining District
Eckel et al. (1997)
    • Grand County
      • Grand Lake Mining District (Wolverine Mining District)
Eckel et al. (1997)
    • Larimer County
Eckel et al. (1997)
    • Park County
      • Guffey Mining District
Eckel et al. (1997)
Eckel et al. (1997)
    • Summit County
      • Kokomo-Tenmile area
Eckel et al. (1997)
    • Teller County
Eckel et al. (1997)
    • Weld County
      • Johnstown
American Mineralogist +1 other reference
  • Connecticut
    • Fairfield County
      • Easton (Weston)
Meteoritics
John T. Stark (1963)
  • Hawaii
    • Maui County
      • Maui Island
        • Lahaina
          • Ukumehame valley
in the collection of Christof Schäfer
  • Idaho
    • Clark County
      • Dubois
Ream (1995)
    • Lemhi County
      • Eureka Mining District
        • Salmon
- (2005)
  • Illinois
    • Cook County
      • Chicago
Roadcap et al. (2005)
  • Iowa
    • Emmet County
Fuchs L H (1967) +2 other references
  • Kansas
    • Decatur County
Fuchs (1968)
    • Greenwood County
      • Lamont
Boesenberg et al. (1997) +1 other reference
    • Norton County
Akihiko Okada (1980)
  • Maine
    • Lincoln County
      • Nobleboro
Mason B. (1979)
  • Missouri
    • Camden County
Sherwood et al. (1998)
    • Taney County
Floran (1978) +1 other reference
  • Montana
    • Beaverhead County
      • Dillon area
Winchell (1914)
    • Flathead County
      • Hog Heaven Mining District (Flathead Mining District)
        • Kofford Ridge
Cossaboom (1981) +1 other reference
  • Nebraska
    • Cass County
      • Eagle
Mészárosová (2018)
    • Sioux County
Duke (1967)
  • Nevada
    • Humboldt County
      • Opalite Mining District
Castor et al. (2004)
    • Lander County
Rocks & Minerals +1 other reference
- (2005)
NBMG Bull 80 Geology and Mineral ... +2 other references
NBMG Bull 80 Geology and Mineral ... +1 other reference
    • Mineral County
      • Buena Vista Mining District
Castor et al. (2004)
    • Nye County
Noble et al. (1968)
CONF-910435-37 +2 other references
    • Pershing County
      • Antelope Mining District
        • Lovelock
Castor et al. (2004)
      • Seven Troughs Mining District
Walstrom (n.d.)
    • White Pine County
      • Illpah Mining District
Castor et al. (2004)
      • Robinson Mining District
        • Ely
Castor et al. (2004)
  • New Mexico
    • Catron County
Northrop et al. (1996)
        • Sawmill Creek
NMGS 37th Field Conference
Min.Rec.: 20 (5)
    • Grant County
Northrop et al. (1996)
Ronald Gibbs +1 other reference
Northrop et al. (1996)
    • Roosevelt County
Noonan (1975) +1 other reference
    • Sandoval County
Northrop et al. (1996)
    • Sierra County
Northrop et al. (1996)
Northrop et al. (1996)
Isik et al. (1994)
Northrop et al. (1996)
Northrop et al. (1996)
Northrop et al. (1996)
Gibbs (2013)
      • Paramount Canyon
Northrop et al. (1996)
Northrop et al. (1996)
Northrop et al. (1996)
Jerry Cone Collection
Collected by Mike Reinke
    • Socorro County
      • Ojo Caliente No. 2 Mining District
NMBGMR Open-file Report - 535
D.Court collection +1 other reference
    • Taos County
      • No Agua Mining District
Ramon DeMark and Jessie Kline
NMBMMR New Mexico Mineral symposium (2000)
Northrop et al. (1996)
Foshag (1938) +2 other references
  • North Carolina
    • Moore County
      • Carthage
Hess et al. (1949) +3 other references
  • Oregon
    • Deschutes County
      • Newberry National Volcanic Monument
Bargar et al. (1986)
    • Douglas County
      • Diamond Lake
K. Starnes
Mineralogical Record Vol 16 Num 2
    • Klamath County
Kleck. W. D. (1970)
    • Lane County
      • McKenzie Pass
        • North Sister Mountain
Olsen et al. (1970) +1 other reference
    • Linn County
Douglas Merson collection
    • Malheur County
- (2005)
Eckel et al. (1997)
  • South Dakota
    • Custer County
      • Custer Mining District
        • Pringle
          • Cicero Peak
Smith et al. (2000)
    • Hanson County
Mason et al. (1973) +1 other reference
    • Lawrence County
      • Bald Mountain Mining District (Portland Mining District)
PEDRAZA ROJAS et al. (2016)
    • Oglala Lakota County
R. Stach and J. Harkensen (1974)
  • Tennessee
    • Cumberland County
Farrington (1915) +1 other reference
    • Hamblen County
Floran (1978) +1 other reference
    • Lincoln County
Duke et al. (1967)
  • Texas
    • Fort Bend County
www.meteorites.com.au +1 other reference
  • Utah
    • Beaver County
Nassau K. (1968)
    • Box Elder County
Heyse (1975) +1 other reference
    • Juab County
      • Honeycomb Hills Mining District
Rocks & Minerals: 68 (6)
Mineralogical Record: 17 (5)
Collected by and in the collection of ...
    • Millard County
Robert Werner (2016)
    • Tooele County
Bullock (1981)
  • Virginia
    • Fredericksburg
Dietrich (1990)
  • Washington
    • Clark County
      • Washougal
articles.adsabs.harvard.edu (n.d.) +1 other reference
Rye et al. (2003)
    • Whatcom County
      • Mount Baker Mining District
        • Mount Baker
Frank (1983)
  • Wisconsin
    • Dodge County
      • Iron Ridge Mining District (Neda Iron Mining District)
Hawley (1934)
  • Wyoming
    • Campbell County
      • Reno Junction
Gunnar Färber - Mineralienliste 3-2017.
    • Johnson County
      • Buffalo
AmMin 72:137
    • Teton County
      • Moran
Iddings et al. (1892)
Vanuatu
 
  • Tanna Island
Coulon et al. (New Hebrides)
Mars
 
  • Aeolis quadrangle
    • Gale Crater
      • Aeolis Mons (Mount Sharp)
Milliken et al. (2016) +1 other reference
Morris et al. (2016)
Northwest Africa Meteorites
 
www.cometshopnew.com (n.d.)
The Moon
 
  • Fra Mauro Highlands
El Goresy et al. (1971)
  • Mare Imbrium
    • Palus Putredinis
Kaneko et al. (2015)
Geochemica et Cosmochimica Acta: 34 (1)
Vol.2: Chemical Isotope Analyses +2 other references
 
矿物 and/or 产地  
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