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About MontaniteHide

Flag of Montana, USA
Bi2(TeO6) · 2H2O
Yellowish, greenish to white
Waxy, Dull
Specific Gravity:
From the locality where it was found in the state of Montana, USA.
An alteration product of Tetradymite.

Classification of MontaniteHide

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

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
D : With only large cations
Dana 7th ed.:

2 : (AB)m(XO6)·xH2O, where x can equal zero

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates

Physical Properties of MontaniteHide

Waxy, Dull
Yellowish, greenish to white
3.7(1) g/cm3 (Measured)    

Optical Data of MontaniteHide

Biaxial (-)
RI values:
nα = 2.090 nβ = 2.090
Max Birefringence:
δ = 2.090
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
r < v extreme

Chemical Properties of MontaniteHide

Bi2(TeO6) · 2H2O
IMA Formula:
Bi3+2Te6+O6 · 2H2O

Crystallography of MontaniteHide

Earthy to compact.

Geological EnvironmentHide

Paragenetic Mode(s):
•  Oxidation

Type Occurrence of MontaniteHide

Other Language Names for MontaniteHide

Simplified Chinese:碲铋华
Traditional Chinese:碲鉍華

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Montanite associated with TetradymiteBi2Te2S
1 photo of Montanite associated with GoldAu

Related Minerals - Nickel-Strunz GroupingHide

7.CD.Argesite(NH4)7Bi3Cl16Trig. 3m (3 2/m) : R3c
7.CD.Campostriniite(Bi3+,Na)3(NH4,K)2Na2(SO4)6 · H2OMon. 2/m : B2/b
7.CD.05MatteucciteNaHSO4 · H2OMon.
7.CD.10MirabiliteNa2SO4 · 10H2OMon. 2/m
7.CD.15Lecontite(NH4,K)NaSO4 · 2H2OOrth. 2 2 2 : P21 21 21
7.CD.20HydroglauberiteNa10Ca3(SO4)8 · 6H2OMon.
7.CD.25EugsteriteNa4Ca(SO4)3 · 2H2OMon.
7.CD.30GörgeyiteK2Ca5(SO4)6 · H2OMon.
7.CD.35Koktaite(NH4)2Ca(SO4)2 · H2OMon.
7.CD.35SyngeniteK2Ca(SO4)2 · H2OMon. 2/m : P21/m
7.CD.40GypsumCaSO4 · 2H2OMon. 2/m
7.CD.45BassaniteCa(SO4) · 0.5H2OMon. 2 : B2
7.CD.50Zircosulfate(Zr,Ti)(SO4)2 · 4H2OOrth.
7.CD.55SchieffelinitePb10Te6+6O20(OH)14(SO4)(H2O)5Orth. mmm (2/m 2/m 2/m) : Cmcm
7.CD.65OmongwaiteNa2Ca5(SO4)6 · 3H2OMon. 2 : B2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.4.2CarlfriesiteCaTe4+2Te6+O8Mon. 2/m : B2/b
28.4.3YafsoaniteCa3Te6+2(ZnO4)3Iso. m3 (2/m 3)
28.4.4TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2OOrth.
28.4.6SchieffelinitePb10Te6+6O20(OH)14(SO4)(H2O)5Orth. mmm (2/m 2/m 2/m) : Cmcm
28.4.7GirditeH2Pb3(Te4+O3)(Te6+O6)Mon. m
28.4.8KhinitePb2+Cu2+3[Te6+O6](OH)2Orth. mm2 : Fdd2
28.4.9Khinite-3TPb2+Cu2+3Te6+O6(OH)2Trig. 3 : P32
28.4.10DugganitePb3Zn3(AsO4)2(TeO6)Trig. 3 2 : P3 2 1
28.4.11KuksitePb3Zn3(PO4)2(TeO6)Trig. 3 2 : P3 2 1
28.4.13Tlapallite(Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2 · 3H2OTrig. 3 2 : P3 2 1
28.4.16CuzticiteFe3+2(TeO6) · 3H2OHex.
28.4.17YecoraiteFe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O

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 MontaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Genth F A (1868) Contributions to mineralogy - No. VII. American Journal of Science and Arts 95, 305-321
Mingaye (1888) Australasian Association for the Advancement of Science: 1: 116.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 112.
Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 636-637.
Kazachenko, V. T., Fat'yanov, I. I., Chubanov, V. M. (1980): Discovery of a lead-​containing variety of montanite. Doklady Akademii Nauk SSSR 255: 968-971 (in Russian).

Internet Links for MontaniteHide

Localities for MontaniteHide

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.
  • New South Wales
    • Murray Co.
      • Jingera
Palache, C., Berman, H., Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 637.
      • Lake George
        • Captain's Flat
Gilligan, L.B. (1975) Part 1. Mine Data Sheets to accompany Metallogenic Map, Canberra 1:250 000 Sheet. Geological Survey of New South Wales, Department of Mines, 297 pages.
Palache, C., Berman, H., & Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 637.
  • Western Australia
    • Kalgoorlie-Boulder Shire
      • Kalgoorlie-Boulder
        • Golden Mile Mines
Simpson, E.S. (1948), Minerals of Western Australia, Vol 2, pp 231, 1948
  • Carinthia
    • Spittal an der Drau District
      • Mallnitz
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
      • Weißensee
Feitzinger, G. (1992) Gold-Silber-Vererzungen und historischer Bergbau im Zirknitz- und Wurtental (Sonnblickgruppe, Hohe Tauern, Kärnten). Lapis, 17 (5), 13-30.
          • Alteck
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
  • Styria
    • Leoben District
      • Kammern im Liesingtal
        • Seiz
          • Wolfsgruben (Wolfgruben)
Auer, C. (2019): Die Mineralien der Wolfsgrube bei Seiz im Liesingtal. Der Steirische Mineralog, 34, 5-11.
  • Wallonia
    • Luxembourg
      • Vielsalm
        • Cahai (Cahay)
BLONDIEAU M., PUCCIO S., COMPERE P., HATERT F. (2017) - Données nouvelles sur quelques espèces minérales de Vielsalm et de Salmchâteau. Bulletin de la Société Royale des Sciences de Liège, Vol. 86, p. 1 - 48
  • Jiangxi
    • Ganzhou
      • Anyuan Co.
Yingchen Ren, Minqing Cheng, and Cunchang Wang (1986): Mineral Deposits 5(2), 63-74
  • Heves County
    • Gyöngyössolymos
Szakáll-Gatter-Szendrei:Hungarian Mineral Species,2005
  • Lower Silesian Voivodeship
    • Kamienna Góra County
      • Gmina Kamienna Góra
        • Rędziny
Gołębiowska, B., Pieczka, A., Parafiniuk, J. (2011): New data on weathering of bismuth sulfotellurides at Rędziny, Lower Silesia, Southwestern Poland. Mineralogia Special Papers: 38: 95-96
  • Chukotka Autonomous Okrug
    • Okhotsk-Chukotka belt
Sidorov, V. A., Volkov, A. V., Wolfson, A. A., & Sidorov, A. A. (2007, November). Au-Bi-Te mineralization of the Kontaktovyi stock in Northeast Russia. In Doklady Earth Sciences (Vol. 417, No. 1, pp. 1164-1168). Nauka/Interperiodica.
  • Banská Bystrica Region
    • Poltár District
      • Kokava nad Rimavicou
Ferenc Š, Bakoš F.,2006: Au-Bi-Te mineralizácia v sineckej astrižnej zóne (Kokava nad Rimavicou) – nový typ mineralizácie v Západných Karpatoch. Min.Slovaca, 38, 223-240
    • Rimavská Sobota District
Bakoš F., Ferenc Š., Hraško Ľ.,2006: Nový výskyt hydrotermálnej Au-Bi-Te mineralizácie v oblasti Krokavy (Slovenské Rudohorie, veporikum). Min.Slovaca, 38, 241-252
    • Žarnovica District
Sejkora J., Litochleb J., Černý P., Ozdín D., 2006: Bi-Te minerálna asociácia zo Župkova (Vtáčnik, Slovenská republika). Mineralia Slovaca, 36, 3-4, 303-315.
Sejkora J., Litochleb J., Černý P., Ozdín D. (2004) Bi-Te minerálna asociácia zo Župkova (Vtáčnik, Slovenská republika). Miner. Slovaca, 36, 3-4, 303-315.
  • Sughd
    • Zeravshan Range
      • Pendzhikent (Penjikent; Panjakent)
        • Chinorsai intrusion
Novgorodova, M.I., Generalov, M.Ye., Gorshkov, A.I., Sivtsov, A.V., Uspenskiy, Ye.I (1991) Association of native gold with bismuthyl carbonates and tellurates. Izvestiya Akad. Nauk SSSR, Ser. Geol.: 4: 102-108 (in Russian); in: Jambor, J.L., Grew, E.S. (1993): New mineral Names. :merican Mineralogist: 78: 234
  • Arizona
    • Cochise County
Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 6.
  • Colorado
    • Boulder Co.
      • Gold Hill Mining District
Minerals of Colorado (1997) E.B. Eckel
  • Montana
    • Butte-Silver Bow (Butte; Silver Bow Co.)
American Journal of Science (1868): 95: 318; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 637.; USGS Bull 574
Gobla, M.J. (2012) Montana mineral locality index. Rocks & Minerals, 87, #3, 208-240.
  • Nevada
    • Lander Co.
NBMG Spec. Pub. 31 Minerals of Nevada
      • Lewis Mining District
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Mexico
    • Doña Ana Co.
      • Organ Mountains
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 637; Northrop, Minerals of New Mexico, 3rd. rev. ed. (1996).
          • Memphis Mine (Roos shaft; Ross shaft [?])
Minerals of New Mexico 3rd ed.; American Mineralogist (1937) 22: 1065-1069.
  • North Carolina
    • Burke Co.
      • Brindletown
Rocks & Min.:60:86.
    • Davidson Co.
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 1076.; Genth F A (1868) Contributions to mineralogy - No. VII, The American Journal of Science and Arts, 95, 305-321
Genth,F.A and Kerr,W.C,1881,Minerals and Mineral Localities of North Carolina,Geologic Survey
Genth,F.A and Kerr,W.C,1881,Minerals and Mineral Localities of North Carolina,Geologic Survey
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