Crerarite Mineral Data (original) (raw)

General Crerarite Information

Help on Chemical Formula: Chemical Formula:

(Pt,Pb)Bi3(S,Se)4-x (x~0.7)

Help on Composition: Composition:

Molecular Weight = 959.01 gm

Bismuth 65.37 % Bi

Platinum 15.26 % Pt

Lead 5.40 % Pb

Selenium 4.94 % Se

Sulfur 9.03 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Pt0.75Pb0.25Bi3S2.7Se0.6

Help on Environment: Environment:

In amphibolite associated with Cu-Ni-PGE deposit.

Help on IMA Status: IMA Status:

Approved IMA 1994

Help on Locality: Locality:

Lake Sheen, Belleterre, Guillet township, Abitibi-Temiscaminque region, Quebec, Canada. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Prof. David Crerar (1945-1994) of Princeton University.

Help on Synonym: Synonym:

IMA1994-003

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Crerarite Crystallography

Help on Cell Dimensions: Cell Dimensions:

a = 5.86, Z = 1; V = 201.23 Den(Calc)= 7.91

Help on Crystal System: Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.94(1), 3.37(0.5), 1.472(0.5),2.07(0.3), 1.687(0.15), 1.766(0.15), 1.197(0.1), 1.347(0.1), 1.311(0.08),

Physical Properties of Crerarite

Help on Cleavage: Cleavage:

{100} Perfect

Help on Color: Color:

Black.

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Help on Habit: Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Help on Hardness: Hardness:

3 - Calcite

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

black

Optical Properties of Crerarite

Help on RL Anisotrophism: RL Anisotrophism:

None.

Help on RL Bireflectance: RL Bireflectance:

None.

Help on RL Color: RL Color:

White-gray.

Help on RL Pleochroism: RL Pleochroism:

None.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Crerarite in Air

λ R ∑ R(λ)
460 nm 52.70
540 nm 50.30
580 nm 49.80
660 nm 48.90

Calculated Relative Intensity Colors of Crerarite in Air

RelativeIntensity 0% 20% 40% 60% 80% 100% 120% 140% 160% 180%
R

Calculated Properties of Crerarite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=6.46 gm/cc
note: Specific Gravity of Crerarite =7.91 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Help on Photoelectric: Photoelectric:

PECrerarite =1,636.54 barns/electron
U=PECrerarite x rElectron Density=10571.95 barns/cc.

Help on Radioactivity: Radioactivity:

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

Crerarite Classification

Help on Dana Class: Dana Class:

02.08.01.08 (02)Sulfides - Including Selenides and Tellurides

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

(02.08.01)Galena Group (Isometric: Fm3m)

02.08.01.01 Galena PbS F m3m 4/m 3 2/m

02.08.01.02 Clausthalite PbSe F m3m 4/m 3 2/m

02.08.01.03 Altaite PbTe F m3m 4/m 3 2/m

02.08.01.04 Alabandite MnS F m3m 4/m 3 2/m

02.08.01.05 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m

02.08.01.06 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m

02.08.01.07 Borovskite Pd3SbTe4 F m3m 4/m 3 2/m

02.08.01.08 Crerarite (Pt,Pb)Bi3(S,Se)4-x(x~0.7) F m3m 4/m 3 2/m

02.08.01.09 Keilite! (Fe,Mn,Mg,Ca,Cr)S F m3m 4/m 3 2/m

Help on Strunz Class: Strunz Class:

02.LB.45 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.L - Unclassified Sulfosalts

02.LB -With essential Pb

02.LB.45 Crerarite (Pt,Pb)Bi3(S,Se)4-x(x~0.7) F m3m 4/m 3 2/m

Other Crerarite Information

Help on References: References:

NAME( MinRec, v 27, p 116) PHYS. PROP.(MinRec, v 27, p 116) OPTIC PROP.(MinRec, v 27, p 116)

Help on See Also: See Also:

Links to other databases for Crerarite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Ask about Crerarite here :
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Print or Cut-and-Paste your Crerarite Specimen Label here :

Crerarite

(Pt,Pb)Bi3(S,Se)4-x (x~0.7)
Dana No: 02.08.01.08 Strunz No: 02.LB.45
Locality:

Notes: