Geversite Mineral Data

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General Geversite Information

Chemical Formula:

Pt(Sb,Bi)2

Composition:

Molecular Weight = 482.20 gm

Bismuth 21.67 % Bi

Antimony 37.87 % Sb

Platinum 40.46 % Pt

______

100.00 %

Empirical Formula:

PtSb_1.5Bi_0.5

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

PDF 45-1341

Geversite Image

Images:

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

Geversite Crystallography

Cell Dimensions:

a = 6.44, Z = 4; V = 267.09 Den(Calc)= 11.99

Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: P a3

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.94(1), 1.72(0.6), 2.92(0.4),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
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Brese N E , von Schnering H G , Zeitschrift fur Anorganische und Allgemeine Chemie , 620 (1994) p.393-404, Bonding trends in pyrites and a reinvestigation of the structures of PdAs2,, PdSb2, PtSb2 and PtBi2, Locality: synthetic

Physical Properties of Geversite

Color:

Steel gray.

Density:

10.97

Diaphaneity:

Opaque

Hardness:

4.5-5 - Near Apatite

Luster:

Metallic

Optical Properties of Geversite

RL Color:

Light gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Geversite in Air**
λ	R	∑ R(λ)
400 nm	58.90
420 nm	59.10
440 nm	59.30
460 nm	59.40
480 nm	59.40
500 nm	59.40
520 nm	59.20
540 nm	58.90
560 nm	58.40
580 nm	57.80
600 nm	57.40
620 nm	57.30
640 nm	57.20
660 nm	57.20
680 nm	57.40
700 nm	57.80

**Calculated Relative Intensity Colors of Geversite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%
R

Calculated Properties of Geversite

Electron Density:

Bulk Density (Electron Density)=9.75 gm/cc
note: Specific Gravity of Geversite =12.0 gm/cc.

Fermion Index:

Fermion Index = 0.13
Boson Index = 0.87

Photoelectric:

PE_Geversite=1,210.56 barns/electron
U=PE_Geversite x rElectron Density=11799.64 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Geversite is Not Radioactive

Geversite Classification

Dana Class:

02.12.01.14 (02)Sulfides - Including Selenides and Tellurides

(02.12)where Am Bn Xp, with (m+n):p=1:2

(02.12.01)Pyrite Group (Isometric: Pa3)

02.12.01.01 Pyrite FeS2 P a3 2/m 3

02.12.01.02 Vaesite NiS2 P a3 2/m 3

02.12.01.03 Cattierite CoS2 P a3 2/m 3

02.12.01.04 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3

02.12.01.05 Trogtalite CoSe2 P a3 2/m 3

02.12.01.06 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3

02.12.01.07 Fukuchilite Cu3FeS8 P a3 2/m 3

02.12.01.08 Krutaite CuSe2 P a3 2/m 3

02.12.01.09 Hauerite MnS2 P a3 2/m 3

02.12.01.10 Laurite RuS2 P a3 2/m 3

02.12.01.11 Aurostibite AuSb2 P a3 2/m 3

02.12.01.12 Krutovite NiAs2 P a3 2/m 3

02.12.01.13 Sperrylite PtAs2 P a3 2/m 3

02.12.01.14 Geversite Pt(Sb,Bi)2 P a3 2/m 3

02.12.01.15 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3

02.12.01.16 Erlichmanite OsS2 P a3 2/m 3

02.12.01.17 Dzharkenite FeSe2 P a3 2/m 3

02.12.01.18 Gaotaiite Ir3Te8 P a3 2/m 3

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

02.E - Metal Sulfides, M:S £ 1:2

02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.

02.EB.05a Aurostibite AuSb2 P a3 2/m 3

02.EB.05a Cattierite CoS2 P a3 2/m 3

02.EB.05a Hauerite MnS2 P a3 2/m 3

02.EB.05a Fukuchilite Cu3FeS8 P a3 2/m 3

02.EB.05a Dzharkenite FeSe2 P a3 2/m 3

02.EB.05a Erlichmanite OsS2 P a3 2/m 3

02.EB.05a Geversite Pt(Sb,Bi)2 P a3 2/m 3

02.EB.05a Gaotaiite Ir3Te8 P a3 2/m 3

02.EB.05a Insizwaite Pt(Bi,Sb)2 P a3 2/m 3

02.EB.05a Laurite RuS2 P a3 2/m 3

02.EB.05a Krutaite CuSe2 P a3 2/m 3

02.EB.05a Pyrite FeS2 P a3 2/m 3

02.EB.05a Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3

02.EB.05a Sperrylite PtAs2 P a3 2/m 3

02.EB.05a Vaesite NiS2 P a3 2/m 3

02.EB.05a Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3

02.EB.05a Trogtalite CoSe2 P a3 2/m 3

Other Geversite Information

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 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
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: