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Montanite

Big Photo

Župkov (Zsubko; Schubkau), Vtáčnik Mts, Banská Bystrica Region, Slovakia
© Thomas Witzke

Show Montanite Photos (3)
Formula:
Bi
 
2
[TeO
 
6
] · 2H
 
2
O
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

IMA status:Questionable/Doubtful
Strunz 8th edition ID:4/K.15-60
Nickel-Strunz 10th (pending) edition ID: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 edition ID:33.2.2.1
Dana 8th edition ID:33.2.2.1

33 : SELENATES AND TELLURATES
2 : (AB)m(XO6)·xH2O, where x can equal zero
Hey's CIM Ref.:28.4.14

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

Type Locality:Highland District (Siberia District), Silver Bow Co., Montana, USA
Year of Discovery:1868

Physical Properties of Montanite

Lustre: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
Maximum Birefringence:δ = 2.090

Chart 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:
Bi
 
2
[TeO
 
6
] · 2H
 
2
O
Essential elements:Bi, H, O, Te
All elements listed in formula:Bi, H, O, Te

Relationship of Montanite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.CD.05Matteuccite
NaHSO
 
4
·H
 
2
O
7.CD.10Mirabilite
Na
 
2
SO
 
4
·10H
 
2
O
7.CD.15Lecontite
(NH
 
4
,K)Na(SO
 
4
)·2H
 
2
O
7.CD.20Hydroglauberite
Na
 
10
Ca
 
3
(SO
 
4
)
 
8
·6H
 
2
O
7.CD.25Eugsterite
Na
 
4
Ca(SO
 
4
)
 
3
·2H
 
2
O
7.CD.30Görgeyite
K
 
2
Ca
 
5
(SO
 
4
)
 
6
·H
 
2
O
7.CD.35Koktaite
(NH
 
4
)
 
2
Ca(SO
 
4
)
 
2
·H
 
2
O
7.CD.35Syngenite
K
 
2
Ca(SO
 
4
)
 
2
·H
 
2
O
7.CD.40Gypsum
Ca[SO
 
4
] · 2H
 
2
O
7.CD.45Bassanite
Ca[SO
 
4
] · 0.5H
 
2
O
7.CD.50Zircosulfate
(Zr,Ti)(SO
 
4
)
 
2
·4H
 
2
O
7.CD.55Schieffelinite
Pb
 
8
(TeO
 
4
)
 
5
(SO
 
4
)
 
3
·8H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
28.4.1Xocomecatlite
Cu
 
3
[(OH)
 
4
|TeO
 
4
]
28.4.2Carlfriesite
CaTe
 
3
O
 
8
28.4.3Yafsoanite
Ca
 
3
Zn
 
3
[TeO
 
6
]
 
2
28.4.4Tlalocite
Cu
 
10
Zn
 
6
(TeO
 
3
)(TeO
 
4
)
 
2
Cl(OH)
 
25
·27H
 
2
O
28.4.5Oboyerite
Pb
 
6
H
 
6
[(Te
4+
 
O
 
3
)
 
3
|(Te
6+
 
O
 
6
)
 
2
] · 2H
 
2
O
28.4.6Schieffelinite
Pb
 
8
(TeO
 
4
)
 
5
(SO
 
4
)
 
3
·8H
 
2
O
28.4.7Girdite
Pb
 
3
H
 
2
[Te
4+
 
O
 
3
|Te
6+
 
O
 
6
]
28.4.8Khinite
Cu
 
3
Pb[(OH)
 
6
|TeO
 
4
]
28.4.9Parakhinite
Cu
 
3
Pb[(OH)
 
6
|TeO
 
4
]
28.4.10Dugganite
Pb
 
3
Zn
 
3
(Te
6+
 
O
 
6
)(AsO
 
4
)
 
2
28.4.11Kuksite
Pb
 
3
Zn
 
3
TeO
 
6
(PO
 
4
)
 
2
28.4.12Cheremnykhite
Pb
 
3
Zn
 
3
TeO
 
6
(VO
 
4
)
 
2
28.4.13Tlapallite
H
 
6
(Ca,Pb)
 
2
(Cu,Zn)
 
3
SO
 
4
(TeO
 
3
)
 
4
TeO
 
6
28.4.15Kuranakhite
PbMn
4+
 
Te
6+
 
O
 
6
28.4.16Cuzticite
Fe
3+
2
[TeO
 
6
] · 3H
 
2
O
28.4.17Yecoraite
Fe
3+
3
(BiO)
 
5
(Te
4+
 
O
 
3
)(Te
6+
 
O
 
6
)
 
2
 · 9H
 
2
O

Other Names for Montanite

Other Languages:
German:Montanit
Spanish:Montanita

Other Information

Health Warning: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.

Articles/Blogs about Montanite

Internet Links for Montanite

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    Localities for Montanite

    Hide Locality List
    The 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.
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    (TL) indicates type locality. ? 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 Mts
        • Ankogel group
          • Ankogel area
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
        • Goldberg group
          • Innerfragant
            • Wurten
              • Alteck Mt.
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    Slovakia
     
    • Banská Bystrica Region
      • Vtáčnik Mts
    		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.
      • Western Slovenské Rudohorie Mts
        • 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
    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
    USA
     
    • Arizona
      • Cochise Co.
        • Tombstone District
          • Tombstone
    		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.
    • Nevada
      • Lander Co.
    		NBMG Spec. Pub. 31 Minerals of Nevada
        • Lewis District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    • New Mexico
      • Doña Ana Co.
    		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.
    • 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 and Kerr,W.C,1881,Minerals and Mineral Localities of North Carolina,Geologic Survey
      • Montgomery Co.
    		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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