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Tsumoite Mineral Data
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General Tsumoite Information
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 Chemical Formula: |
BiTe |
| Composition: |
Molecular Weight = 336.58 gm |
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Bismuth 62.09 % Bi |
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Tellurium 37.91 % Te |
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______ |
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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  |
| Synonym: |
ICSD 30525 |
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PDF 44-667 |
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Tsumoite Image |
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Images:
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Images:
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Smirnite Tsumoite
Comments: Grayish to olive-green crusts of smirnite over quartz and metallic-grey tsumoite. Smirnite composition is (Bi1.98Pb.02)2.00Te1.00O4.99.
Location: Shilovo-Isetskii mine, Ekaterinburg (Sverdlovsk), Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia. Ex Fedor V. Chukhrov specimen collected before WWII.
Scale: Picture Size 12x10 mm.
© Pavel M. Kartashov |
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Images:
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Volynskite Tsumoite
Comments: BSE image of composite grain of volynskite (AgBiTe) and tsumoite (BiTe) associated with sphalerite in chalcopyrite.
Location: Stobie deposit, South Range breccia belt, Supergiant Ni-Cu-PGE Sudbury District, Ontario, Canada.
Scale: See Image.
© National Resouces of Canada |
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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 Scalenohedral H-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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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 |
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Optical Properties of Tsumoite
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| RL Anisotrophism: |
Moderate. |
| RL Color: |
White with a creamy tint. |
| RL Pleochroism: |
Very weak. |
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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 |
| 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 |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.20)Tsumoite Group (Trigonal: P-3m1) |
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02.08.20.01 Tsumoite BiTe P 3m1 3 2/m |
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02.08.20.02 Sulphotsumoite Bi3Te2S P 3m1 3 2/m |
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02.08.20.03 Nevskite Bi(Se,S) P 3m1 3 2/m |
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02.08.20.04 Ingodite Bi(S,Te) P 3m1 3 2/m |
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02.08.20.05 Telluronevskite! Bi3TeSe2 P 3m1 3 2/m |
| Strunz Class: |
02.DC.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.D - Metal Sulfides, M:S = 3:4 and 2:3 |
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02.DC -Variable M:S |
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02.DC.05b Ingodite Bi(S,Te) P 3m1 3 2/m |
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02.DC.05b Nevskite Bi(Se,S) P 3m1 3 2/m |
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02.DC.05b Sulphotsumoite Bi3Te2S P 3m1 3 2/m |
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02.DC.05b Tsumoite BiTe P 3m1 3 2/m |
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02.DC.05b Telluronevskite! Bi3TeSe2 P 3m1 3 2/m |
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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
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Print or Cut-and-Paste your Tsumoite Specimen Label here :
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Tsumoite
BiTe
Dana No: 02.08.20.01 Strunz No: 02.DC.05b
Locality:
Notes:
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