Clausthalite
A valid IMA mineral species - grandfathered
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About Clausthalite
Views of the Clausthal lead-zinc-silver mining area, in 1900.
Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
Formula:
PbSe
Colour:
Bluish grey to lead-grey
Lustre:
Metallic
Hardness:
2½ - 3
Specific Gravity:
7.8 - 8.22
Crystal System:
Isometric
Member of:
Name:
First described as Selenbley by Stromeyer & Hausmann (1825). Named Clausthalie by Beudant in 1832, for the locality where it was first found ("mine de Lorenz près de Klausthal"). It was Dana who, in his first System of Mineralogy (1837), "standardised" the French name to its current mineral name.
Galena Group. Clausthalite-Galena Series.
Note: Above 300°C, there is a complete solid solution series along the join PbS-PbSe, whereas miscibility gaps exist below ∼350°C and 805°C along joins PbSe-PbTe and PbS-PbTe, respectively (Liu and Chang, 2018).
Note: Above 300°C, there is a complete solid solution series along the join PbS-PbSe, whereas miscibility gaps exist below ∼350°C and 805°C along joins PbSe-PbTe and PbS-PbTe, respectively (Liu and Chang, 2018).
Unique Identifiers
Mindat ID:
1061
Long-form identifier:
mindat:1:1:1061:6
GUID
(UUID V4):
(UUID V4):
54baec9e-1a87-4236-8fcc-db6976ca7f98
IMA Classification of Clausthalite
Approved, 'Grandfathered' (first described prior to 1959)
Classification of Clausthalite
2.CD.10
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
D : With Sn, Pb, Hg, etc.
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
D : With Sn, Pb, Hg, etc.
2.8.1.2
2 : SULFIDES
8 : AmXp, with m:p = 1:1
2 : SULFIDES
8 : AmXp, with m:p = 1:1
3.6.6
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
6 : Sulphides etc. of Sb and Pb
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
6 : Sulphides etc. of Sb and Pb
Mineral Symbols
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Cth | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Clt | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Clausthalite
Metallic
Transparency:
Opaque
Colour:
Bluish grey to lead-grey
Streak:
Grey-black
Hardness:
2½ - 3 on Mohs scale
Hardness:
VHN100=44 - 49 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good on {001}
Good on {001}
Fracture:
Irregular/Uneven
Comment:
Granular fracture
Density:
7.8 - 8.22 g/cm3 (Measured) 8.275 g/cm3 (Calculated)
Optical Data of Clausthalite
Reflectivity:
Wavelength | R |
---|---|
400nm | 63.4% |
420nm | 63.0% |
440nm | 61.8% |
460nm | 60.1% |
480nm | 58.4% |
500nm | 56.7% |
520nm | 55.3% |
540nm | 54.0% |
560nm | 52.7% |
580nm | 51.6% |
600nm | 50.7% |
620nm | 49.9% |
640nm | 49.4% |
660nm | 48.8% |
680nm | 48.4% |
700nm | 48.2% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 63.4%.
Colour in reflected light:
Galena white with grayish tinge.
Chemistry of Clausthalite
Mindat Formula:
PbSe
Elements listed:
Common Impurities:
Hg,Co,Cu
Crystallography of Clausthalite
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fm3m
Setting:
Fm3m
Cell Parameters:
a = 6.1243 Å
Unit Cell V:
229.70 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Massive, fine granular, foliated
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0000004 | Clausthalite | Ramsdell L S (1925) The crystal structures of some metallic sulfides American Mineralogist 10 281-304 | 1925 | synthetic | 0 | 293 | |
0010047 | Clausthalite | Noda Y, Masumoto K, Ohba S, Saito Y, Toriumi K, Iwata Y, Shibuya I (1987) Temperature dependence of atomic thermal parameters of lead chalcogenides, PbS, PbSe and PbTe Acta Crystallographica C43 1443-1445 | 1987 | synthetic | 0 | 293 | |
0010048 | Clausthalite | Noda Y, Masumoto K, Ohba S, Saito Y, Toriumi K, Iwata Y, Shibuya I (1987) Temperature dependence of atomic thermal parameters of lead chalcogenides, PbS, PbSe and PbTe Acta Crystallographica C43 1443-1445 | 1987 | synthetic | 0 | 293 | |
0011373 | Clausthalite | Wyckoff R W G (1963) Second edition. Interscience Publishers, New York, New York rocksalt structure Crystal Structures 1 85-237 | 1963 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.062 Å | (100) |
2.165 Å | (70) |
3.536 Å | (30) |
1.369 Å | (25) |
1.768 Å | (20) |
1.846 Å | (18) |
1.250 Å | (16) |
Comments:
Synthetic
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Geological Setting:
* Selenium bearing low-sulfur hydrothermal deposits (HOM, Vol. I, p. 101),
* in metal-rich black shales (Coveney & Glascock, 1989; Pašava et al., 1993),
* in silicites (Scharm & Scharmová, 1997)
* in mineralized sandstones (Shawe, 2011)
* in weathered Mn-rich carbonate & phosphate concretions (Matýsek & Jirásek, 2021)
* in metal-rich black shales (Coveney & Glascock, 1989; Pašava et al., 1993),
* in silicites (Scharm & Scharmová, 1997)
* in mineralized sandstones (Shawe, 2011)
* in weathered Mn-rich carbonate & phosphate concretions (Matýsek & Jirásek, 2021)
Type Occurrence of Clausthalite
Synonyms of Clausthalite
Other Language Names for Clausthalite
Relationship of Clausthalite to other Species
Member of:
Other Members of this group:
Alabandite | MnS | Iso. m3m (4/m 3 2/m) : Fm3m |
Altaite | PbTe | Iso. m3m (4/m 3 2/m) : Fm3m |
Galena | PbS | Iso. m3m (4/m 3 2/m) : Fm3m |
Niningerite | (Mg,Fe2+,Mn2+)S | Iso. m3m (4/m 3 2/m) : Fm3m |
Oldhamite | (Ca,Mg)S | Iso. m3m (4/m 3 2/m) : Fm3m |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
94 photos of Clausthalite associated with Klockmannite | CuSe |
89 photos of Clausthalite associated with Calcite | CaCO3 |
73 photos of Clausthalite associated with Penroseite | (Ni,Co,Cu)Se2 |
72 photos of Clausthalite associated with Umangite | Cu3Se2 |
67 photos of Clausthalite associated with Krut'aite | CuSe2 |
57 photos of Clausthalite associated with Berzelianite | Cu2-xSe (x ≈ 0.12) |
54 photos of Clausthalite associated with Tiemannite | HgSe |
48 photos of Clausthalite associated with Gold | Au |
39 photos of Clausthalite associated with Eucairite | AgCuSe |
36 photos of Clausthalite associated with Eldragónite | Cu6BiSe4(Se2) |
Related Minerals - Strunz-mindat Grouping
2.CD. | Svetlanaite | SnSe |
2.CD.05 | Herzenbergite | SnS |
2.CD.05 | Teallite | PbSnS2 |
2.CD.10 | Alabandite | MnS |
2.CD.10 | Altaite | PbTe |
2.CD.10 | Galena | PbS |
2.CD.10 | Niningerite | (Mg,Fe2+,Mn2+)S |
2.CD.10 | Oldhamite | (Ca,Mg)S |
2.CD.10 va | Quiroguite | Pb23Sb6S32 |
2.CD.10 | Keilite | (Fe2+,Mg)S |
2.CD.15a | Cinnabar | HgS |
2.CD.15b | Hypercinnabar | HgS |
Other Information
Thermal Behaviour:
Decrepitates in the closed tube. In the open tube, gives fumes of selenium and a red sublimate. Before the blowpipe, on charcoal, gives a strong odor of selenium and partially fuses. Coats the charcoal first gray with a reddish border (selenium) and then yellow (lead oxide). When it is pure, it is entirely volatile. With soda, gives a globule of metallic lead.
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 Clausthalite
mindat.org URL:
https://www.mindat.org/min-1061.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Clausthalite
Reference List:
Earley, J. W. (1950) Description and synthesis of the selenide minerals. American Mineralogist, 35 (5-6) 337-364
Ramdohr, Paul (1969) The Ore Minerals and their Intergrowths. Pergamon Press, Oxford. 1174pp. doi:10.1016/c2013-0-10027-x
Localities for Clausthalite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Argentina | |
| Paar (1996) |
| M.K. de Brodtkorb (ed.) |
Minerales de la Republica Argentina | |
| Paar et al. (2004) |
Marquez-Zavalia et al. (2021) | |
| Milka K. de BRODTKORB and Sabrina CROSTA (2010) |
Milka K. de BRODTKORB and Sabrina CROSTA (2010) | |
de Brodtkorb et al. (2010) +1 other reference | |
Recursos Minerales de la Republica ... +3 other references | |
| Sarp et al. (1987) |
| Grundmann et al. (2018) |
| Anthony et al. (1990) +2 other references |
| Ahlfeld Friedrich and Angelelll ... +1 other reference |
Atlantic Ocean | |
| Firstova et al. (2019) |
Australia | |
| Gilligan et al. (1995) |
Gilligan et al. (1995) | |
Gilligan et al. (1995) | |
| Bloom et al. (1992) +1 other reference |
Leckie (1987) | |
| Rajesh (2008) |
| Mount Woods Inlier et al. (Honors thesis) +1 other reference |
Owen et al. (2023) | |
| Francis (2010) |
| Wülser et al. (2011) |
| Griessmann (2011) |
| Ehrig et al. (2012) +1 other reference |
| Ralph Bottrill et al in prep. +1 other reference |
Bottrill et al. (2008) | |
| Kalleske (2010) |
| Econ Geol (1997) |
Austria | |
| Kolitsch (2014) |
| Kolitsch et al. (2019) |
| Postl et al. (1997) |
| Auer (2020) |
| Kolitsch (2015) |
Belgium | |
| Jedwab et al. (1982) +1 other reference |
Bolivia | |
| doi:10.3390/min7050068 +3 other references |
| Hurlbut et al. (1969) +1 other reference |
Brazil | |
| Menez +2 other references |
| Berni et al. (2014) +1 other reference |
Bulgaria | |
| Kerestedjian (1997) |
| Cook et al. (2002) |
| Cioacă et al. (2018) |
| Bonev +4 other references |
| K. Bogdanov et al. (2005) +2 other references |
Canada | |
| personal correspondence with Giles Peatfield (see comments in description) |
| Healy et al. (1992) |
| Richard Gunter Collection |
| Grammatikopoulos et al. (2007) |
| Stefanie M. Brueckner et al. (2016) |
| Sparkes et al. (2016) |
| Boyle et al. (1966) |
| Richard Gunter Collection +2 other references |
| J. A. Mandarino (1965) |
| Ann P.Sabina (1991) |
| Thorpe et al. (1976) +3 other references |
| Ames et al. (2003) |
Kjarsgaard et al. (2010, June) | |
| Ames et al. (2007) +2 other references |
Kjarsgaard et al. (2010, June) | |
| ontariominerals.com |
Sabina (1991) | |
Parnell et al. (2018) | |
| Ohnenstetter et al. (1989) |
| an example of a deformed et al. (6) +1 other reference |
| Boucher (2011) |
| Smith (2021) |
Smith (2021) | |
| Zdenek et al. (1987) |
| L. Kish and M. Cuney (1981) |
| Reyx et al. (1993) |
Rich et al. (1977) +1 other reference | |
| Can Min Vol. 29 (1991) +1 other reference |
USGS Open File Report 81-1666 | |
Can Min 10:787-796 +1 other reference | |
USGS Open File Report 81-1666 +2 other references | |
Tom Loomis specimen +1 other reference | |
Montgomery (n.d.) | |
J. Traill (1952) | |
| ROBINSON et al. (1952) |
Tremblay (1978) +1 other reference | |
Stylianos Augustithis (1995) | |
China | |
| Weng et al. (2023) |
| Dequan Shuai and Xiaojiang Hu (1995) +4 other references |
| Luo et al. (2015) |
| Chen Luming et al. (1993) +1 other reference |
| Bilun Luo (1979) |
| Chuanyi Yang (1985) |
| Wallis (2006) |
| Jiayong Pan et al. (2009) |
| Yingxia Xu et al. (2006) |
Hongbin Chen et al. (2006) | |
| Shifeng Dai et al. (2006) |
| Qin et al. (2022) |
| Xia Ai and Zengyi Chen (1993) |
| Peng Xinjian et al. (2001) +1 other reference |
| Xu et al. (2014) |
| Hongbin Chen et al. (2006) |
| Wang et al. (2022) |
| Liu et al. (2019) |
| Jianbin Zheng et al. (2006) |
| Zhi Li et al. (1973) +1 other reference |
| Jiajun Liu et al. (1998) |
| Chunqi Wen et al. (2002) +3 other references |
| Lianhui Dong and Changlie Tian (2001) |
Cuba | |
| Pérez-Vázquez et al. (1998) |
Czech Republic | |
| Pažout et al. (2019) |
Škácha et al. (2017) | |
| Škácha P. et al. (šachta 16, Příbram - Háje) +1 other reference |
- (Pavel Škácha coll.) | |
| Anthony et al. (1990) +1 other reference |
| Lapis 2002 (7/8) |
| Sejkora et al. (2017) |
| Pauliš P. et al.: Minerály v rudnině ... |
Scharm +7 other references | |
| Dolníček et al. (2019) |
| Matýsek D (2021) |
| Sejkora (2016) |
| Pauliš |
| Sejkora (1994) +2 other references |
| Fengl (2.) +1 other reference |
| Sejkora J. et al. (2013) |
| Sejkora J. et al. (Česká republika) |
| Sejkora et al. (2022) |
| Pauliš et al. (2019) |
Veselovský (2019) | |
Pašava et al. (1993) +1 other reference | |
| Economic Geology 92 (1997) |
Pauliš P. Nejzajímavější ... | |
| Scharmová et al. (1995) +1 other reference |
| Strübel +2 other references |
| Sejkora et al. (2017) |
| Litochleb J. |
| Šouba |
| Sejkora (1994) +1 other reference |
| Kvaček |
| Kvaček +1 other reference |
Kvaček +1 other reference | |
| J.Suchankova et al. (2007) |
Vavřín +1 other reference | |
Kvaček (1979) | |
Petr Pauliš | |
Kvaček +1 other reference | |
Vavřín (1994) | |
Kvaček | |
DR Congo | |
| Mineralogical Record: 20: 287-288. |
Finland | |
| Luukkonen (1994) |
| M. J. Holma and V. J. Keinänen (2006) |
Gustafsson et al. (2019) | |
| Iljina |
Iljina | |
| Geological Survey of Finland 2008 ... +1 other reference |
| Vuorelainen Y et al. (1964) +2 other references |
Geological Survey of Finland 2007 ... | |
Häkli et al. (1965) | |
Geological Survey of Finland 2008. ... | |
| Kojonen K: K. (Cu,Fe) +1 other reference |
| Karinen |
| Kinnunen |
| Cook et al. (2007) |
France | |
| H. Agrinier and J. Geffroy : "Les Minéraux Séléniés du Point Uranifère de Liauzun-en-Olloix (Puy de Dôme) |
| Anthony et al. (1990) +1 other reference |
| J.-L. Hohl: "Minéraux et Mines du Massif Vosgien" (Mulhouse) |
| A. Sinojmeri et al. (Hautes Alpes) |
Germany | |
| Kolitsch et al. (2019) |
| Walenta (1992) |
| |
| DILL et al. (1986) +1 other reference |
| Seeliger et al. (1965) +1 other reference |
| Kopp et al. (2012) |
| PETITJEAN collection +1 other reference |
| Wittern (2001) |
| Weiß (1990) |
| |
Weiß (1990) +2 other references | |
| Weiß (1990) +1 other reference |
| |
| Weiß (1990) +1 other reference |
| Erik Vercammen collection |
| Koch et al. (2018) |
| Weiß (1990) +1 other reference |
| Weiß (1990) |
| Gröbner et al. (2011) +1 other reference |
| Schnorrer-Köhler (1991) |
| Schaarschmidt (2007) +1 other reference |
| Tischendorf (1969) |
Lapis 2002 (11) +1 other reference | |
| Möhn et al. (07/2020) |
| Förster (2004) +2 other references |
Vollstädt et al. (1991) | |
| Forster et al. (2004) |
| Maggie Wilson |
| Wittern (2001) |
Wittern (2001) | |
| Wittern (2001) |
Lapis 30 (7/8) | |
| Wittern (2001) |
| Naumann et al. (1898) |
American Mineralogist (1983) | |
| Leon Hupperichs collection |
| |
| www.mineralienatlas.de (n.d.) |
| Heider et al. (2022) |
Greece | |
| Economou-Eliopoulos et al. (2005) |
Eliopoulos +3 other references | |
Greenland | |
| Anthony et al. (1990) +1 other reference |
Hungary | |
| Zsombor Eva |
| Takács et al. (2013) |
India | |
| Babu et al. (2002) |
Babu et al. (2002) | |
Italy | |
| Moroni et al. (2019) |
| AA. VV. |
Japan | |
| 田中崇裕・濱根大輔: ... +1 other reference |
| Galena et al. (216) +2 other references |
| Pavel M. Kartashov analytical data (2012) |
| Nakata et al. (2011) |
Kazakhstan | |
| Stepanets et al. (2019) |
Mali | |
| David M. Lawrence et al. (2013) |
Mexico | |
| Hoffmann (1968) +1 other reference |
Moore et al. (2003) | |
| Lapis 2001 (1) |
| Kring et al. (2020) |
Morocco | |
| Vinogradova +5 other references |
| Lebedev et al. (2019) |
| El Ghorfi et al. (2006) |
North Macedonia | |
| Petrunov et al. (2001) |
Norway | |
| Heier (1953) |
| Bullock et al. (2018) |
| Pavel M. Kartashov analytical data (2005) |
Heier (1953) | |
| Cook (1996) |
| Dons (1963) |
| Larsen et al. (2020) |
Larsen et al. (2020) | |
Philippines | |
| Hermo et al. (2022) +1 other reference |
Poland | |
| Piestrzyński (1992) |
| Jadwiga PIECZONKA et al. (2008) |
| Mochnacka K. 1967: Geologia polimetalicznego złoża w Kowarach (Dolny Śląsk) +2 other references |
| Pringle et al. (1980) +3 other references |
Piestrzyński et al. (2012) | |
| Kucha H. 2007: Mineralogia kruszcowa i ... |
| Harańczyk C. 1972: Mineralizacja ... |
| Piestrzynski et al. (2000) |
Auguścik-Górajek et al. (2021) | |
| Oszczepalski et al. (2017) |
| Madziarz (2006) |
Muszer A. et al. (PbSe) +1 other reference | |
| Galuskin E. & Szełęg E. 2003: The first finding of Ag-amalgamates in rodingites (Nasławice, Lower Silesia, Poland) |
| Oszczepalski et al. (2017) |
| Nejbert K. 2008: Mineralogy of ... |
Nejbert K. 2006: New data on the ... | |
| Miecznik et al. (2011) |
Portugal | |
| Cabri et al. (1998) |
Romania | |
| Cook et al. (2002) +1 other reference |
| Cook et al. (2004) |
| Singer et al. (2008) |
Russia | |
| Vikentev (2016, April) |
Belogub et al. (2008) | |
Vishnevsky A. V. et al. (2017) +1 other reference | |
| Galuskin (2007) |
| Spiridonov et al. (the South Urals) +3 other references |
| Ayupova et al. (2015) +2 other references |
Anthony et al. (1990) | |
| Kolova et al. (2021) |
Pekov (1998) | |
| Golubev et al. (2008) |
| Sidorov et al. (2017, August) |
| [Der Aufschluss 1995:4 p.163-180] +1 other reference |
| Wanlie Ding (2005) |
| Буханова (2018) |
Fats’yanov et al. (2010, November) | |
| Kuznetsov et al. (2012, January) |
| Alexander V. Dedeev et al (2002) |
| Pekov (1998) |
Kovalenker et al. (1975) +2 other references | |
| Groshev +7 other references |
Ivanyuk et al. (2018) | |
| - (2014) |
Grokhovskaya et al. (2000) | |
| Kalinin (2021) |
Kalinin (2021) +1 other reference | |
| Bazai et al. (2009) |
| Belogub et al. (2008) |
| Grant et al. (2001) |
| Grokhovskaya et al. (2005) |
| - (2014) |
| Safonov et al. (2003) |
| American Mineralogist +4 other references |
| Kuleshevich et al. (2012) |
| Коневин et al. (2020) |
V. I. Ivashchenko et al. (2007) | |
Кулешевич et al. (2020) | |
| Kailachakov et al. (2020) |
[World of Stones 12:49] | |
| Kondratieva et al. (2021) |
Kondratieva et al. (2021) | |
| Econ Geol (1997) +1 other reference |
| Lehmann et al. (1999) |
| Kuzhuget et al. (2022) |
| Kuzhuget et al. (2015) |
| Bur´yanova et al. (1957) +2 other references |
| Gongalsky et al. (2007) |
Slovakia | |
| sulphosalts from epithermal ... +2 other references |
| Števko M. et al. (2018) |
| Kozub G. et al. (2011) |
Kozub et al. (2011) | |
| Koděra (1986) |
South Africa | |
| McFall et al. (2019) |
| Cairncross (1991) +1 other reference |
Cairncross (1991) | |
Cairncross et al. (1995) | |
| Armitage et al. (2002) |
| genetic implications. Economic Geology: ... +1 other reference |
| Cairncross et al. (1995) |
Spain | |
| Econ Geol (1997) +1 other reference |
| Castillo et al. (2009) +1 other reference |
| C. Canet et al. |
Sweden | |
| |
| |
| Econ Geol (1997) +1 other reference |
| Dobbe (1991) |
Dobbe (1991) | |
| Scherbina (1941) +4 other references |
| Juve (1974) |
Switzerland | |
| Stalder et al. (1998) |
| Beda Hofmann (1986) |
Stalder et al. (1998) | |
Stalder et al. (1998) | |
| Stalder et al. (1998) |
| Wülser et al. (2006) |
| Meisser (2012) |
| Stalder et al. (1998) +1 other reference |
| Stalder et al. (1998) |
Tajikistan | |
| Badalov et al. (1975) |
Badalov et al. (1975) | |
Tanzania | |
| Wilhelmij et al. (2016) |
| Bindi +2 other references |
Turkey | |
| Özgür (1993) |
Özgür (1993) | |
UK | |
| By EPMA at UCL 23/10/08 |
| Stanley et al. (1990) +1 other reference |
| Spinks et al. (2014) |
USA | |
| Anthony et al. (1995) |
| Stolburg (1984) |
| Adams (2016) +1 other reference |
| USGS Prof Paper 320 |
USGS Prof Paper 320 | |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Shawe et al. (2011) |
Eckel et al. (1997) +1 other reference | |
| Rocks & Min.:64:189 +1 other reference |
| Quigley +1 other reference |
| Econ Geol (1987) |
| Castor et al. (2004) |
| Castor et al. (2004) |
Tharalson +5 other references | |
| Cain et al. (2007) |
| Taksavasu et al. (2018) |
| Castor et al. (2004) |
| Aird et al. (2021) |
| Castor et al. (2004) |
| Northrop et al. (1996) |
| Geyer et al. (1976) |
Geyer et al. (1976) | |
| Smith (1991) |
| Smith (1991) |
Barton et al. (2018) | |
| Young et al. (1960) |
| Chuck Adan collection and personal ... |
| Kampf et al. (2012) |
Canadian Mineralogist (2001) | |
Kampf et al. (2012) | |
| Bullock (1981) |
Uzbekistan | |
| Koneev et al. (2005) |
| Rustam Koneev et al. (2005) |
| Kovalenker (2003) |
Il'ina +4 other references | |
Zimbabwe | |
| Oberthür et al. (2008) |
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Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania