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General Tsumoite Information |
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 Chemical Formula: |
BiTe | ||
| Composition: |
Molecular Weight = 336.58 gm | ||
| Bismuth 62.09 % Bi | |||
| Tellurium 37.91 % Te | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
BiTe | ||
| Environment: |
As small irregular aggregates in skarns associated with pyrometasomatic Cu-Zn-Pb deposits. | ||
| IMA Status: |
Approved IMA 1978 | ||
| Locality: |
Tsumo mine, Hiroshima, Shimane prefecture, Honshu, Japan. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
| Name Pronunciation: |
Tsumoite  |
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| Synonym: |
ICSD 30525 | ||
| PDF 44-667 | |||
Tsumoite Image | |||
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Images:
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Tsumoite Crystallography |
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| Axial Ratios: |
a:c = 1:5.43871 | ||
| Cell Dimensions: |
a = 4.422, c = 24.05, Z = 6; V = 407.27 Den(Calc)= 8.23 | ||
| Crystal System: |
Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3m1 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.23(1), 2.36(0.6), 2.21(0.5), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Tsumoite |
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| Cleavage: |
{0001} Perfect | ||
| Color: |
Silver white. | ||
| Density: |
8.16 | ||
| Diaphaneity: |
Opaque | ||
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. | ||
| Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. | ||
| Hardness: |
2.5-3 - Finger Nail-Calcite | ||
| Luster: |
Metallic | ||
| Streak: |
steel gray | ||
Optical Properties of Tsumoite |
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| RL Anisotrophism: |
Moderate. | ||
| RL Color: |
White with a creamy tint. | ||
| RL Pleochroism: |
Very weak. | ||
Calculated Properties of Tsumoite |
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| Electron Density: |
Bulk Density (Electron Density)=6.60 gm/cc note: Specific Gravity of Tsumoite =8.23 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.03 Boson Index = 0.97 |
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| Photoelectric: |
PETsumoite =1,390.51 barns/electron U=PETsumoite x rElectron Density=9,180.15 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tsumoite is Not Radioactive |
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Tsumoite Classification |
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| Dana Class: |
02.08.20.01 (02)Sulfides - Including Selenides and Tellurides | ||
| (02.08)where Am Bn Xp, with (m+n):p=1:1 | |||
| (02.08.20)Tsumoite Group (Trigonal: P-3m1) | |||
| Strunz Class: |
02.DC.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf | ||
| 02.D - Metal Sulfides, M:S = 3:4 and 2:3 | |||
| 02.DC -Variable M:S | |||
Other Tsumoite Information |
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) | ||
| See Also: |
Links to other databases for Tsumoite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - Scandinavian mineral gallery 16 - WWW-MINCRYST Search for Tsumoite using: Visit our Advertisers for Tsumoite : A Bijoux Google Search for TsumoiteAdam's Minerals Google Search for Tsumoite Cape Minerals Google Search for Tsumoite Dakota Matrix Minerals Google Search for Tsumoite Excalibur Mineral Corp. Google Search for Tsumoite Exceptional Minerals Google Search for Tsumoite John Betts Fine Minerals Search for Tsumoite McDougall Minerals Google Search for Tsumoite Mineral News Website Link Rock and Mineral Shows Google Search for Tsumoite Weinrich Minerals, Inc. Google Search for Tsumoite Ask about Tsumoite here : Print or Cut-and-Paste your Tsumoite Specimen Label here :
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