Erlichmanite Mineral Data

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General Erlichmanite Information

Chemical Formula:

OsS2

Composition:

Molecular Weight = 254.33 gm

Osmium 74.78 % Os

Sulfur 25.22 % S

______

100.00 %

Empirical Formula:

OsS₂

Environment:

Found in noble metal placers.

IMA Status:

Approved IMA 1971

Locality:

MacIntosh mine, Willow Creek, Humbolt Co. California. Link to MinDat.org Location Data.

Name Origin:

For Joseph Erlichman, electron probe analyst, who analyzed a number of new minerals.

Name Pronunciation:

Erlichmanite + Pronunciation

Synonym:

ICSD 300224

PDF 19-882

Erlichmanite Crystallography

Cell Dimensions:

a = 5.6196, Z = 4; V = 177.47 Den(Calc)= 9.52

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): 3.24(1), 1.694(0.85), 2.81(0.85),

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
Help on Above

Stingl T , Muller B , Lutz H D , Zeitschrift fur Kristallographie , 202 (1992) p.161-162, Crystal structure refinement of osmium(II) disulfide, OsS2

Physical Properties of Erlichmanite

Color:

Gray white.

Density:

9.59

Diaphaneity:

Opaque

Hardness:

4.5-5.5 - Near Apatite

Luster:

Metallic

Optical Properties of Erlichmanite

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Erlichmanite in Air**
λ	R	∑ R(λ)
400 nm	43.70
420 nm	43.70
440 nm	43.70
460 nm	43.70
480 nm	43.60
500 nm	43.40
520 nm	43.20
540 nm	42.90
560 nm	42.70
580 nm	42.40
600 nm	42.10
620 nm	41.70
640 nm	41.20
660 nm	40.80
680 nm	40.30
700 nm	39.90

**Calculated Relative Intensity Colors of Erlichmanite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R

Calculated Properties of Erlichmanite

Electron Density:

Bulk Density (Electron Density)=8.09 gm/cc
note: Specific Gravity of Erlichmanite =9.52 gm/cc.

Fermion Index:

Fermion Index = 0.13
Boson Index = 0.87

Photoelectric:

PE_Erlichmanite=1,039.75 barns/electron
U=PE_Erlichmanite x rElectron Density=8,406.55 barns/cc.

Radioactivity:

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

Erlichmanite Classification

Dana Class:

02.12.01.16 (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 Erlichmanite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Erlichmanite :
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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Erlichmanite

OsS2
Dana No: 02.12.01.16 Strunz No: 02.EB.05a
Locality:

Notes: