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Geversite Mineral Data
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General Geversite Information
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 Chemical Formula: |
Pt(Sb,Bi)2 |
| Composition: |
Molecular Weight = 482.20 gm |
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Bismuth 21.67 % Bi |
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Antimony 37.87 % Sb |
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Platinum 40.46 % Pt |
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______ |
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100.00 % |
| Empirical Formula: |
PtSb1.5Bi0.5 |
| Environment: |
In concentrates of platinum minerals, derived from Pt-Fe-Ni-Cu deposits in ultramafic rocks. |
| IMA Status: |
Approved IMA 1961 |
| Locality: |
In the Driekop mine, eastern Transvaal, South Africa. Link to MinDat.org Location Data. |
| Name Origin: |
For Professor T.W. Gevers. |
| Name Pronunciation: |
Geversite + Pronunciation  |
| Synonym: |
ICSD 43105 |
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PDF 45-1341 |
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Geversite Image |
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Images:
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Geversite
Comments: Several PGM (mertieite, geversite: white) in a silicate matrix (black) of ferrian chromite (FeCr). (CanMin v40:277).
Location: Gabbro-hosted Precambrian Baula Complex, in Orissa, India.
Scale: See Image.
© Canadian Mineralogist |
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Geversite Crystallography
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| Cell Dimensions: |
a = 6.44, Z = 4; V = 267.09 Den(Calc)= 11.99 |
| Crystal System: |
Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3 |
| X Ray Diffraction: |
By Intensity(I/Io): 1.94(1), 1.72(0.6), 2.92(0.4), |
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Physical Properties of Geversite
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| Color: |
Steel gray. |
| Density: |
10.97 |
| Diaphaneity: |
Opaque |
| Hardness: |
4.5-5 - Near Apatite |
| Luster: |
Metallic |
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Optical Properties of Geversite
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| RL Color: |
Light gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Geversite in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
58.90 |
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| 420 nm |
59.10 |
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| 440 nm |
59.30 |
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| 460 nm |
59.40 |
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| 480 nm |
59.40 |
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| 500 nm |
59.40 |
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| 520 nm |
59.20 |
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| 540 nm |
58.90 |
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| 560 nm |
58.40 |
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| 580 nm |
57.80 |
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| 600 nm |
57.40 |
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| 620 nm |
57.30 |
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| 640 nm |
57.20 |
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| 660 nm |
57.20 |
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| 680 nm |
57.40 |
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| 700 nm |
57.80 |
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Calculated Relative Intensity Colors of Geversite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
| R |
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Calculated Properties of Geversite
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| Electron Density: |
Bulk Density (Electron Density)=9.75 gm/cc
note: Specific Gravity of Geversite =12.0 gm/cc.
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| Fermion Index: |
Fermion Index = 0.13
Boson Index = 0.87 |
| Photoelectric: |
PEGeversite =1,210.56 barns/electron
U=PEGeversite x rElectron Density=11799.64 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Geversite is Not Radioactive |
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Geversite Classification
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| Dana Class: |
02.12.01.14 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.01)Pyrite Group (Isometric: Pa3) |
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02.12.01.01 Pyrite FeS2 P a3 2/m 3 |
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02.12.01.02 Vaesite NiS2 P a3 2/m 3 |
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02.12.01.03 Cattierite CoS2 P a3 2/m 3 |
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02.12.01.04 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3 |
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02.12.01.05 Trogtalite CoSe2 P a3 2/m 3 |
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02.12.01.06 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3 |
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02.12.01.07 Fukuchilite Cu3FeS8 P a3 2/m 3 |
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02.12.01.08 Krutaite CuSe2 P a3 2/m 3 |
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02.12.01.09 Hauerite MnS2 P a3 2/m 3 |
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02.12.01.10 Laurite RuS2 P a3 2/m 3 |
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02.12.01.11 Aurostibite AuSb2 P a3 2/m 3 |
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02.12.01.12 Krutovite NiAs2 P a3 2/m 3 |
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02.12.01.13 Sperrylite PtAs2 P a3 2/m 3 |
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02.12.01.14 Geversite Pt(Sb,Bi)2 P a3 2/m 3 |
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02.12.01.15 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3 |
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02.12.01.16 Erlichmanite OsS2 P a3 2/m 3 |
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02.12.01.17 Dzharkenite FeSe2 P a3 2/m 3 |
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02.12.01.18 Gaotaiite Ir3Te8 P a3 2/m 3 |
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02.12.01.19 Mayingite IrBiTe P a3 2/m 3 |
| Strunz Class: |
02.EB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc. |
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02.EB.05a Aurostibite AuSb2 P a3 2/m 3 |
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02.EB.05a Cattierite CoS2 P a3 2/m 3 |
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02.EB.05a Hauerite MnS2 P a3 2/m 3 |
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02.EB.05a Fukuchilite Cu3FeS8 P a3 2/m 3 |
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02.EB.05a Dzharkenite FeSe2 P a3 2/m 3 |
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02.EB.05a Erlichmanite OsS2 P a3 2/m 3 |
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02.EB.05a Geversite Pt(Sb,Bi)2 P a3 2/m 3 |
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02.EB.05a Gaotaiite Ir3Te8 P a3 2/m 3 |
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02.EB.05a Insizwaite Pt(Bi,Sb)2 P a3 2/m 3 |
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02.EB.05a Laurite RuS2 P a3 2/m 3 |
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02.EB.05a Krutaite CuSe2 P a3 2/m 3 |
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02.EB.05a Pyrite FeS2 P a3 2/m 3 |
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02.EB.05a Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3 |
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02.EB.05a Sperrylite PtAs2 P a3 2/m 3 |
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02.EB.05a Vaesite NiS2 P a3 2/m 3 |
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02.EB.05a Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3 |
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02.EB.05a Trogtalite CoSe2 P a3 2/m 3 |
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Other Geversite 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 Geversite :
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 - WWW-MINCRYST
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Geversite
Pt(Sb,Bi)2
Dana No: 02.12.01.14 Strunz No: 02.EB.05a
Locality:
Notes:
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