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About Allanite-(Y)Hide

Thomas Allan
Often slightly radioactive due to minor U and/or Th contents; therefore often metamict.
Sub-Vitreous, Resinous, Waxy, Greasy
5½ - 6½
Specific Gravity:
3.5 - 4.2
Crystal System:
Re-named, but not described, in 1966 by Alfred Abraham Levinson using what is now called the Levinson Rule whereby REE-dominant minerals are named by their root mineral name olus chemical suffixes. Allanite was named in 1810 by Thomas Thomson for Thomas Allan (1777, Edinburgh, Scotland - 1833, Morpeth, Northumberland, England), Scottish banker and mineralogist, who first observed "allanite". The -(Y) suffix was later added by Levinson (1966) to designate the Y-dominant member of the allanite group.
Allanite Subgroup of the Epidote Group.
Black usually massive mineral. Resinous when fresh, but frequently dulled by hydrothermal alteration or weathering.

Classification of Allanite-(Y)Hide

Approved, 'Grandfathered' (first described prior to 1959)

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination

58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)

16 : Silicates Containing Aluminum and other Metals
13 : Aluminosilicates of the rare earths

Physical Properties of Allanite-(Y)Hide

Sub-Vitreous, Resinous, Waxy, Greasy
May be dull due to alteration
Light gray
5½ - 6½ on Mohs scale
May be softer due to alteration
Very brittle
{001} imperfect, {100} and {110} both poor
Conchoidal, Sub-Conchoidal
3.5 - 4.2 g/cm3 (Measured)    
Variable due to alteration

Optical Data of Allanite-(Y)Hide

Biaxial (-)
RI values:
nα = 1.715 - 1.791 nβ = 1.718 - 1.815 nγ = 1.733 - 1.822
Measured: 40° to 80°, Calculated: 50° to 56°
Max Birefringence:
δ = 0.018 - 0.031
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
distinct to strong
Optical Extinction:
Y=b, OAP || (010)

Chemical Properties of Allanite-(Y)Hide


Often slightly radioactive due to minor U and/or Th contents; therefore often metamict.
IMA Formula:

Crystallography of Allanite-(Y)Hide

Crystal System:
Usually massive, rarely found in euhedral crystals. Tabular to prismatic crystals typical of allanite sub-group, rarely as rod-like crystals in sprays.
Unit cell dimensions unavailable, but should be near allanite-(Ce)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
Data not availableÅ(
d-values should be similar to allanite sub-group. Unit cell has typical epidote pseudocell (2a, b, 2c)

Synonyms of Allanite-(Y)Hide

Other Language Names for Allanite-(Y)Hide

Simplified Chinese:钇褐帘石

Relationship of Allanite-(Y) to other SpeciesHide

Other Members of this group:
Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Allanite-(La){CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Allanite-(Nd){CaNd}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Dissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Dissakisite-(La){CaLa}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Ferriakasakaite-(Ce) {CaCe}{Fe3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Ferriakasakaite-(La){CaLa}{Fe3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Ferriallanite-(Ce){CaCe}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Ferriallanite-(La){CaLa}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Ferriandrosite-(La){MnLa}{Fe3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Manganiakasakaite-(La){CaLa}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Manganiandrosite-(Ce){Mn2+Ce}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Uedaite-(Ce){Mn2+Ce}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Unnamed (Ce- and Mn-analogue of Ferriakasakaite-(La)){Ca,(Ce,La,Nd),Mn2+}2(Mn3+,Fe3+,Al)Al(Mn2+,Mg)(Si2O7)(SiO4)O(OH)
Unnamed (Mg-analogue of Ferriallanite-(Ce)){CaCe}{(Fe3+,Al)Al(Mg,Fe2+)}(Si2O7)(SiO4)O(OH)
Unnamed (Mn-analogue of Ferriallanite-(Ce)){CaCe}{Fe3+AlMn2+}(Si2O7)(SiO4)O(OH)
Vanadoallanite-(La){CaLa}{V3+AlFe2+}(Si2O7)(SiO4)O(OH) Mon. 2/m : P21/m
Vanadoandrosite-(Ce){Mn2+Ce}{V3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
8 photos of Allanite-(Y) associated with Thalénite-(Y)Y3Si3O10F
5 photos of Allanite-(Y) associated with Keiviite-(Y)Y2Si2O7
4 photos of Allanite-(Y) associated with Tengerite-(Y)Y2(CO3)3 · 2-3H2O
4 photos of Allanite-(Y) associated with Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
4 photos of Allanite-(Y) associated with QuartzSiO2
3 photos of Allanite-(Y) associated with Kimuraite-(Y)Ca(Y,Nd)2(CO3)4 · 6H2O
2 photos of Allanite-(Y) associated with Iimoriite-(Y)Y2[SiO4][CO3]
2 photos of Allanite-(Y) associated with PyrrhotiteFe1-xS
2 photos of Allanite-(Y) associated with PyropeMg3Al2(SiO4)3
1 photo of Allanite-(Y) associated with Fergusonite-(Y)YNbO4

Related Minerals - Nickel-Strunz GroupingHide

9.BG.Shuiskite-(Cr)Ca2Cr3+Cr3+2[Si2O6OH][SiO4](OH)2OMon. 2/m : B2/m
9.BG.Alnaperbøeite-(Ce)Ca(Ce2.5Na0.5)(AlAl2Al)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/m
9.BG.MagnesiovesuvianiteCa19MgAl4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10](OH)(OH)9Tet. 4/m : P4/n
9.BG.AlumovesuvianiteCa19AlAl4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/m : P4/n
9.BG.05bAllanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(La){CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05aClinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bDissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
9.BG.05aEpidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Khristovite-(Ce){CaCe}{MgAlMn2+}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
9.BG.05aPiemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Tweddillite{CaSr}{Mn3+AlMn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(Ce){CaCe}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Niigataite{CaSr}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m
9.BG.05Manganiandrosite-(Ce){Mn2+Ce}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Dissakisite-(La){CaLa}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Vanadoandrosite-(Ce){Mn2+Ce}{V3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Uedaite-(Ce){Mn2+Ce}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05aEpidote-(Sr){CaSr}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Nd){CaNd}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(La){CaLa}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bÅskagenite-(Nd){Mn2+Nd}{Al2Fe3+}(Si2O7)(SiO4)O2Mon. 2/m : P21/m
9.BG.9.BG.Ferriakasakaite-(La){CaLa}{Fe3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.9.BGFerriperbøeite-(Ce)CaCe3(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/m
9.BG.10ZoisiteCa2Al3[Si2O7][SiO4]O(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
9.BG.15SursassiteMn2+2Al3(SiO4)(Si2O7)(OH)3Mon. 2/m : P21/m
9.BG.20PoppiiteCa2V3+V3+2[Si2O6OH][SiO4](OH)2OMon. 2/m : B2/m
9.BG.35VesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35WiluiteCa19MgAl4(Al,Mg)8(B,☐)4☐[Si2O7]4[(SiO4)10]O(O,OH)9Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35ManganvesuvianiteCa19Mn3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/m : P4/n
9.BG.35FluorvesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(F,OH)9Tet. 4/mmm (4/m 2/m 2/m)
9.BG.35CyprineCa19Cu2+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10](OH)(OH)9Tet. 4/m : P4/n
9.BG.50Gatelite-(Ce)CaCe3(AlAl2Mg)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/b
9.BG.55Västmanlandite-(Ce)CaCe3(MgAl2Mg)[Si2O7][SiO4]3F(OH)2Mon. 2/m : P21/m

Related Minerals - Dana Grouping (8th Ed.)Hide

58.2.1a.1Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.2Allanite-(La){CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.4Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.5Dissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.6Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
58.2.1a.7Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.9Khristovite-(Ce){CaCe}{MgAlMn2+}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
58.2.1a.11Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.13.2Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)Mon. 2/m : P21/b
16.13.5Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
16.13.6Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
16.13.8Dissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Allanite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Frondel, J.W. (1964): Variation in some rare earths in allanite. American Mineralogist: 49: 1159-1177.
Dollase, W.A. (1971) Refinement of the crystal structures of epidote, allanite and hancockite. American Mineralogist: 56: 447-464.
Ercit, T.S. (2002) The mess that is “allanite”. The Canadian Mineralogist: 40: 1411-1419.
Armbruster, T., Bonazzi, P., Akasaka, M., Bermanec, V., Chopin, C., Gieré R., Heuss-Assbichler, S., Liebscher, A., Menchetti, S., Pan, Y., Pasero, M. (2006) Recommended nomenclature of epidote-group minerals. European Journal of Mineralogy: 18: 551-567.
Alekseev, V.I., Marin, Yu.B., Gembitskaya, I.M. (2013) Allanite-(Y) in areas of ongonite magmatism in the Far East: Isomorphism and petrogenetic implications. Geology of Ore Deposits: 55: 503-514.

Internet Links for Allanite-(Y)Hide

Localities for Allanite-(Y)Hide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Western Australia
    • Mukinbudin Shire
      • Mukinbudin
Calderwood, M.A., Grguric;, B.A., Jacobson, M.I., (2007): Guidebook to the Pegmatites of Western Australia; Hesperian Press, Perth, 2007.
  • Ontario
    • Hastings County
      • Dungannon Township
[Bancroft & District Mineral Collecting Guidebook]
    • Nipissing District
      • Murchison Township
Dana's New Mineralogy
  • Québec
    • Abitibi-Témiscamingue
      • Rouyn-Noranda TE
Galley, A.G., Jonasson, I.R., and Watkinson, D.H. (2000): Mineralium Deposita 35, 619-637.
    • Outaouais
      • Les Collines-de-l'Outaouais RCM
        • Val-des-Monts
          • Lac Saint-Pierre (Wakefield Lake)
Hogarth, D.D. (1972): The Evans-Lou pegmatite, Quebec: a unique yttrium-niobium-bismuth-vanadium mineral assemblage. Mineralogical Record, 3 (2), 69-77.
  • Nicosia District
    • Troodos mountain range
      • Spilia
Contributions to Mineralogy and Petrology 169 (2015) 25.
Czech Republic
  • Vysočina Region
    • Třebíč District
Roman Gramblička collection
  • Lapland
    • Sodankylä
Al-Ani Thair 2012. Detailed SEM study on REE-bearing minerals of paragneisses Mäkärä and Vaulo, Northern Finland. Geologian Tutkimuslaitos arkistoraportti 73/2011.
  • South Ostrobothnia
    • Alavus
P. Kartashov analytical data, J. Dyer material
  • Southwest Finland
    • Kimitoön (Kemiönsaari)
      • Kimitoön Island
Pavel M. Kartashov analytical data. Jyrki Autio Collection.
  • Saxony
    • Erzgebirgskreis
      • Marienberg
C. Kersten (1845): Ueber das Vorkommen von Yttererde- und Ceroxydul-Silikaten im sächsischen Erzgebirge.- Poggendorffs Annalen der Physik und Chemie 63, 135-141 (confirmed by SEM-EDX analysis 1999, T. Witzke)
  • Lombardy
    • Varese Province
No reference listed
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Baveno
        • Oltrefiume
          • Mount Camoscio
Grill, E. (1935): I minerali del granito di Baveno, la fayalite. Periodico di Mineralogia, 129-133. - Gallitelli, P. (1936): Le miche del granito di Baveno. . Periodico di Mineralogia, 61-76 - Pagliani, G. (1948): Le Zeoliti del granito di Baveno. Periodico di Mineralogia, 175-188. - Ravagnani, D. (1974): I giacimenti uraniferi italiani - Gruppo Mineralogico Lombardo - Museo Civico di Storia Naturale di Milano, Ed., Milano, 188 pp. - min. Rec. 14 (3), 157-168 - Am. Min. 83, 1330-1334 (1998) - Am. Min. 84, 782-789 (1999). - Guastoni, A. & Pezzotta, F. (2004): Kristiansenite a Baveno, second ritrovamento Mondiale della specie. Rivista Mineralogica Italiana, 4/2004, 247-251. - Guastoni, A., Demartin, F., Pezzotta, F. (2004): Sekaninaite delle pegmatiti granitiche di Feriolo e Baveno (VB). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, 145, 59-68. - Mineralogist americano (2005) 90, 1442-1452.
      • Toceno
        • Val di Crana
          • Val di Crana pegmatites (Arvogno)
Guastoni, A., Secco, L., Škoda, R., Nestola, F., Schiazza, M., Novák, M., & Pennacchioni, G. (2019). Non-Metamict Aeschynite-(Y), Polycrase-(Y), and Samarskite-(Y) in NYF Pegmatites from Arvogno, Vigezzo Valley (Central Alps, Italy). Minerals, 9(5), 313.
Guastoni, A., Secco, L., Škoda, R., Nestola, F., Schiazza, M., Novák, M., & Pennacchioni, G. (2019). Non-Metamict Aeschynite-(Y), Polycrase-(Y), and Samarskite-(Y) in NYF Pegmatites from Arvogno, Vigezzo Valley (Central Alps, Italy). Minerals, 9(5), 313.
  • Fukushima Prefecture
    • Date District
      • Kawamata
        • Iizaka Village (Iisaka)
Yamada et al (2004) Koubutsu-Gakkai Kouen-Youshi, 123.; Sueno, S., Matsuura, S., Bunno, M., & Kurosawa, M. (2002). Occurrence and crystal chemical features of protoferro-anthophyllite and protomangano-ferro-anthophyllite from Cheyenne Canyon and Cheyenne Mountain, USA and Hirukawa-mura, Suisho-yama, and Yokone-yama, Japan. Journal of mineralogical and petrological sciences, 97(4), 127-136.
  • Buskerud
    • Modum
      • Kløftefoss
G. Raade (pers. comm. to U. Kolitsch, May 2009)
  • Nordland
    • Narvik
Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum, skrift 38, 5-28.
Husdal, T. (2011): Tysfjordgranittens pegmatitter. Stein. 38 (4): 4-35
  • Telemark
    • Bamble
      • Skogstad
Larsen, A.O., Škoda, R., Åsheim, A. (2016): Yttrian epidote and allanite-(Y) from a granite pegmatite in Bamble, Telemark, Norway. Norsk mineralsymposium 2016, 33-38.
  • Lower Silesian Voivodeship
    • Dzierżoniów County
      • Piława Górna
        • DSS Piława Górna Quarry
Pieczka, A., Hawthorne, F.C., Ma, C., Rossman, G.R., Szełęg, E., Szuszkiewicz, A., Turniak, K., Nejbert, K., Ilnicki, S.S., Buffat, P., Rutkowski, B. (2016): Żabińskiite, ideally Ca(Al0.5Ta0.5)(SiO4)O, a new mineral of the titanite group from the Piława Górna pegmatite, the Góry Sowie Block, southwestern Poland, Mineralogical Magazine: 80: (in press); Pieczka, A., Hawthorne, F.C., Cooper, M.A., Szełęg, E., Szuszkiewicz, A., Turniak, K., Nejbert, K., Ilnicki, S. (2015): Pilawite-(Y), Ca2(Y,Yb)2[Al4(SiO4)4O2(OH)2], a new mineral from the Piława Górna granitic pegmatite, southwestern Poland: mineralogical data, crystal structure and association. Mineralogical Magazine, 79, 1143-1157.
  • Murmansk Oblast
    • Belye Tundry Massif
Voloshin, A.V., Lyalina, L.M., Savchenko, Ye.E., Selivanova, E.A. [Волошин А.В., Лялина Л.М., Савченко Е.Э., Селиванова Е.А.] (2005): Intragranite rare-metal pegmatites of the alkaline granite formation of the Kola Peninsula. Quartz-zircon pseudomorphs [Внутригранитные редкометалльные пегматиты щелочногранитовой формации Кольского полуострова. Кварц-цирконовые псевдоморфозы]. Zapiski RMO [Записки РМО], 134, 4, 98-107; Lyalina, L.M., Selivanova, E.A., Savchenko, Ye.E., Zozulya, D.R., Kadyrova, G.I. (2014): Minerals of the gadolinite-(Y)–hingganite-(Y) series in the alkali granite pegmatites of the Kola Peninsula. Geology of Ore Deposits, 56, 675-684.
  • Republic of Karelia
    • Louhi District
      • Chupa pegmatite field
        • Chupa Bay
E.I. Semenov data
  • Community of Madrid
Garcia G., Gonzalez C., Bueno A. (2004) - Cadalso de los Vidrios (Madrid), Bocamina, n° 14, pp: 12-46.
  • Jönköping County
    • Vetlanda
      • Alseda
        • Slättåkra
Blomstrand 1878
  • Norrbotten County
    • Jokkmokk
  • Värmland County
    • Filipstad
      • Persberg ore district
P.M. Kartashov data; Armbuster, T. et al.(2006): Recommended nomenclature of epidote-group minerals.European Journal of Mineralogy. 18, 551-567
  • Arizona
    • Mohave County
      • Aquarius Mountains (Aquarius Range; Peacock Range)
        • Wikieup
  • Colorado
    • Routt Co.
Minerals of Colorado (1997) E.B. Eckel
  • New York
    • Essex Co.
Rocks & Min. (2007) 82:242
        • Moriah Township
  • Texas
    • Llano Co.
      • Bluffton
U.S.Geological Survey Bulletin 340 (1908): 286-294.
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