Montanite Mineral Data + 
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- 33.2.2.1 Montanite Bi2TeO6·2(H2O) Mono
- IV/K.15-10 Frankhawthorneite Cu2TeO4(OH)2 P 21/n 2/m
- IV/K.15-12 Xocomecatlite Cu3TeO4(OH)4 Unk Ortho
- IV/K.15-15 Mcalpineite Cu3TeO6·(H2O) Unk Cubic
- IV/K.15-16 Jensenite Cu3TeO6·2(H2O) P 21/n 2/m
- IV/K.15-18 Leisingite! Cu(Mg,Cu,Fe,Zn)2TeO6·6(H2O) P 31m 3 2/m
- IV/K.15-19 Utahite! Cu5Zn3(TeO4)4(OH)8·7(H2O) P1 or P1 Tri
- IV/K.15-20 Cuzticite Fe2TeO6·3(H2O) Unk Hex
- IV/K.15-30 Yafsoanite Ca3Te2Zn3O12 I a3d 4/m 3 2/m
- IV/K.15-40 Khinite PbCu3TeO6(OH)2 F ddd 2/m 2/m 2/m
- IV/K.15-50 Parakhinite Cu3PbTeO4(OH)6 P 6222 or P 6422 6 2 2
- IV/K.15-60 Montanite Bi2TeO6·2(H2O) Mono
General Montanite Information |
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 Chemical Formula: |
Bi2Te++++++O6·2(H2O) | ||
| Composition: |
Molecular Weight = 677.59 gm | ||
| Bismuth 61.68 % Bi 68.77 % Bi2O3 | |||
| Tellurium 18.83 % Te 23.55 % TeO2 | |||
| Hydrogen 0.60 % H 5.32 % H2O | |||
| Oxygen 18.89 % O | |||
| ______ ______ | |||
| 100.00 % 97.64 % = TOTAL OXIDE | |||
| Empirical Formula: |
Bi2TeO6·2(H2O) | ||
| Environment: |
Alteration of tetradymite. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1868 | ||
| Locality: |
Highland, Montana, USA. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
Montanite Image | |||
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Images:
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Montanite Crystallography |
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| Crystal System: |
Monoclinic | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.54(1), 2.6(0.9), 1.892(0.8),1.708(0.5), 3.22(0.5), 1.504(0.3), 2.95(0.3), 2.04(0.2), | ||
Physical Properties of Montanite |
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| Color: |
Greenish, Greenish white, Yellowish, White, Light yellow. | ||
| Density: |
3.8 | ||
| Diaphaniety: |
Opaque | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Luminescence: |
Non-fluorescent. | ||
| Luster: |
Earthy (Dull) | ||
| Magnetism: |
Nonmagnetic | ||
Optical Properties of Montanite |
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| Gladstone-Dale: |
CI meas= -0.681 (Poor) - where the CI = (1-KPDmeas/KC) KPDmeas= 0.2868,KC= 0.1706 |
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| Optical Data: |
Biaxial (-), a=2.09, b=2.09, , 2V(Meas)=0-15. Dispersion r < v extreme. | ||
| Pleochroism (x): |
green. | ||
| Pleochroism (y): |
green. | ||
| Pleochroism (z): |
green. | ||
Calculated Properties of Montanite |
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| Electron Density: |
relectron=3.21 gm/cc |
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| Fermion Index |
Fermion Index = 0.01513 Boson Index = 0.98487 |
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| Photoelectric: |
PEMontanite =1,244.40 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Montanite is Not Radioactive |
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Montanite Classification |
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| Dana Class: |
33.2.2.1 (33)Selenates and Tellurates | ||
| (33.2)as A+ (B++)m XO6 Zq · x(H2O) where x can equal 0 | |||
| (33.2.2)Dana Group | |||
| Strunz Class: |
IV/K.15-60 IV - Oxides | ||
| IV/K - Complex Tellurides with [TeO6]6-, [TeO3]2- and [TeO4]2- groups | |||
| IV/K.15 - Yafsoanite - Cuzticite series | |||
Other Montanite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Montanite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Montanite using: Visit our Advertisers for Montanite : Translate Montanite Mineral Data : Ask about Montanite here : Print or Cut-and-Paste your Montanite Specimen Label here :
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