Erlichmanite Mineral Data

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.

Synonym:

ICSD 300224

PDF 19-882

Erlichmanite Image

Images:

Erlichmanite

Comments: Large gray fractured grain of erlichmanite. Polished section in reflected light.
Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 0.25 mm.
© Thomas Witzke / Abraxas-Verlag

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
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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

Diaphaniety:

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:

r_electron=8.09 gm/cc
note: r_Erlichmanite=9.52 gm/cc.

Fermion Index

Fermion Index = 0.13425
Boson Index = 0.86575

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Erlichmanite is Not Radioactive

Erlichmanite Classification

Dana Class:

2.12.1.16 (2)Sulfides - Including Selenides and Tellurides

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

(2.12.1)Pyrite Group (Isometric: Pa3)

2.12.1.1 Pyrite FeS2 P a3 2/m 3

2.12.1.2 Vaesite NiS2 P a3 2/m 3

2.12.1.3 Cattierite CoS2 P a3 2/m 3

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

2.12.1.5 Trogtalite CoSe2 P a3 2/m 3

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

2.12.1.7 Fukuchilite Cu3FeS8 P a3 2/m 3

2.12.1.8 Krutaite CuSe2 P a3 2/m 3

2.12.1.9 Hauerite MnS2 P a3 2/m 3

2.12.1.10 Laurite RuS2 P a3 2/m 3

2.12.1.11 Aurostibite AuSb2 P a3 2/m 3

2.12.1.12 Krutovite NiAs2 P a3 2/m 3

2.12.1.13 Sperrylite PtAs2 P a3 2/m 3

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

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

2.12.1.16 Erlichmanite OsS2 P a3 2/m 3

2.12.1.17 Dzharkenite FeSe2 P a3 2/m 3

2.12.1.18 Gaotaiite Ir3Te8 P a3 2/m 3

2.12.1.19 Mayingite IrBiTe P a3 2/m 3

Strunz Class:

II/D.17-110 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.17 - Pyrite group and related compounds, Fukuchilite - Micherenite

II/D.17-10 Fukuchilite Cu3FeS8 P a3 2/m 3

II/D.17-20 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3

II/D.17-30 Pyrite FeS2 P a3 2/m 3

II/D.17-40 Cattierite CoS2 P a3 2/m 3

II/D.17-50 Vaesite NiS2 P a3 2/m 3

II/D.17-60 Hauerite MnS2 P a3 2/m 3

II/D.17-65 Dzharkenite FeSe2 P a3 2/m 3

II/D.17-70 Krutaite CuSe2 P a3 2/m 3

II/D.17-80 Trogtalite CoSe2 P a3 2/m 3

II/D.17-90 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3

II/D.17-100 Laurite RuS2 P a3 2/m 3

II/D.17-110 Erlichmanite OsS2 P a3 2/m 3

II/D.17-120 Sperrylite PtAs2 P a3 2/m 3

II/D.17-130 Aurostibite AuSb2 P a3 2/m 3

II/D.17-140 Geversite Pt(Sb,Bi)2 P a3 2/m 3

II/D.17-150 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3

II/D.17-153 Changchengite! IrBiS P 2₁3 2 3

II/D.17-155 Mayingite IrBiTe P a3 2/m 3

II/D.17-160 Maslovite PtBiTe P 2₁3 2 3

II/D.17-170 Testibiopalladite PdTe(Sb,Te) P 2₁3 2 3

II/D.17-175 Padmaite PdBiSe P 2₁3 2 3

II/D.17-180 Michenerite (Pd,Pt)BiTe P 2₁3 2 3

Other Erlichmanite Information

References:

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

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Erlichmanite

OsS2
Dana No: 2.12.1.16 Strunz No: II/D.17-110
Locality:

Notes: