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Montanite

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Formula:
Bi2(TeO6) · 2H2O
Colour:
Yellowish, greenish to ...
Name:
From the locality where it was found in the state of Montana, USA.
An alteration product of Tetradymite.

Classification of Montanite

Questionable/Doubtful
7.CD.60

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
D : With only large cations
Dana 7th ed.:
33.2.2.1
33.2.2.1

33 : SELENATES AND TELLURATES
2 : (AB)m(XO6)·xH2O, where x can equal zero
28.4.14

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
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First Recorded Occurrence of Montanite

Year of Discovery:
1868

Physical Properties of Montanite

Waxy, Dull
Diaphaneity (Transparency):
Opaque
Colour:
Yellowish, greenish to white
Comment:
Soft

Crystallography of Montanite

Morphology:
Earthy to compact.

Optical Data of Montanite

Type:
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
Dispersion:
r < v extreme

Chemical Properties of Montanite

Formula:
Bi2(TeO6) · 2H2O
Essential elements:
All elements listed in formula:

Relationship of Montanite to other Species

7.CD.05MatteucciteNaHSO4 · H2O
7.CD.10MirabiliteNa2SO4 · 10H2O
7.CD.15Lecontite(NH4,K)NaSO4 · 2H2O
7.CD.20HydroglauberiteNa10Ca3(SO4)8 · 6H2O
7.CD.25EugsteriteNa4Ca(SO4)3 · 2H2O
7.CD.30GörgeyiteK2Ca5(SO4)6 · H2O
7.CD.35Koktaite(NH4)2Ca(SO4)2 · H2O
7.CD.35SyngeniteK2Ca(SO4)2 · H2O
7.CD.40GypsumCaSO4 · 2H2O
7.CD.45BassaniteCaSO4 · 0.5H2O
7.CD.50Zircosulfate(Zr,Ti)(SO4)2 · 4H2O
7.CD.55SchieffelinitePb8(TeO4)5(SO4)3 · 8H2O
7.CD.65OmongwaiteNa2Ca5(SO4)6 · 3H2O
28.4.1XocomecatliteCu3(TeO4)(OH)4
28.4.2CarlfriesiteCaTe24+Te6+O8
28.4.3YafsoaniteCa3Zn3(TeO6)2
28.4.4TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2O
28.4.5OboyeriteH6(Pb,Ca)6(Te4+O3)3(Te6+O6)2 · 2H2O
28.4.6SchieffelinitePb8(TeO4)5(SO4)3 · 8H2O
28.4.7GirditeH2Pb3(Te4+O3)(Te6+O6)
28.4.8KhinitePb2+Cu32+[Te6+O6](OH)2
28.4.9Khinite-3TPb2+Cu32+Te6+O6(OH)2
28.4.10DugganitePb3Zn3(AsO4)2(TeO6)
28.4.11KuksitePb3Zn3(PO4)2(TeO6)
28.4.12CheremnykhitePb3Zn3(VO4)2(TeO6)
28.4.13TlapalliteH6(Ca,Pb)2(Cu,Zn)3(TeO3)4(TeO6)(SO4)
28.4.15KuranakhitePbMn4+Te6+O6
28.4.16CuzticiteFe23+(TeO6) · 3H2O
28.4.17YecoraiteFe33+Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O

Other Names for Montanite

Name in Other Languages:
German:Montanit
Simplified Chinese:碲铋华
Spanish:Montanita
Traditional Chinese:碲鉍華

Other Information

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 Montanite

Reference List:
Genth (1868) American Journal of Science: 45: 318.

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.

Doklady Akademii Nauk SSSR (1980): 255: 968.

Internet Links for Montanite

Localities for Montanite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • New South Wales
    • Murray Co.
      • Bullongong
        • Lake George
          • Captain's Flat
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.
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.
Austria
 
  • Carinthia
    • Hohe Tauern
      • Ankogel group
        • Ankogel area
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
      • Goldberg group
        • Innerfragant
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
China
 
  • Jiangxi Province
    • Ganzhou Prefecture
      • Anyuan Co.
Yingchen Ren, Minqing Cheng, and Cunchang Wang (1986): Mineral Deposits 5(2), 63-74
Hungary
 
  • Heves Co.
    • Mátra Mts
      • Gyöngyössolymos
Szakáll-Gatter-Szendrei:Hungarian Mineral Species,2005
Slovakia
 
  • Banská Bystrica Region
    • Poltár Co.
      • 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 Co.
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 Co.
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.
USA
 
  • Arizona
    • Cochise Co.
      • Tombstone Hills
        • Tombstone District
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 District
Minerals of Colorado (1997) E.B. Eckels
  • Montana
    • 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 District
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Mexico
    • Doña Ana Co.
      • Organ Mts
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
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
Mineral and/or Locality  
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