Brezinaite Mineral Data

General Brezinaite Information

Chemical Formula:

Cr3S4

Composition:

Molecular Weight = 284.25 gm

Chromium 54.88 % Cr

Sulfur 45.12 % S

______

100.00 %

Empirical Formula:

Cr₃S₄

Environment:

In the metal matrix and contiguous to silicate inclusions (Tucson iron meteorite).

IMA Status:

Approved IMA 1969

Locality:

In the Tucson and New Baltimore iron meteorites. Link to MinDat.org Location Data.

Name Origin:

For Aristides Brezina (1848-1909), past Director of the Mineralogy-Petrology Section of the Natural History Museum, Vienna, Austria.

Name Pronunciation:

Brezinaite + Pronunciation

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Brezinaite Crystallography

Axial Ratios:

a:b:c =1.7401:1:3.2905

Cell Dimensions:

a = 5.96, b = 3.425, c = 11.27, Z = 2; beta = 91.533° V = 229.97 Den(Calc)= 4.10

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/m

Crystal Structure:

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Jellinek F , Acta Crystallographica , 10 (1957) p.620-628, The structures of the chromium sulphides, Locality: synthetic

Physical Properties of Brezinaite

Color:

Brownish gray, Gray.

Density:

4.12

Diaphaneity:

Opaque

Hardness:

3.5-4.5 - Between Copper Penny and Fluorite-Apatite

Luster:

Metallic - Dull

Optical Properties of Brezinaite

RL Color:

Brownish gray.

Calculated Properties of Brezinaite

Electron Density:

Bulk Density (Electron Density)=3.92 gm/cc
note: Specific Gravity of Brezinaite =4.10 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Brezinaite= 14.86 barns/electron
U=PE_Brezinaite x rElectron Density= 58.30 barns/cc.

Radioactivity:

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

Brezinaite Classification

Dana Class:

02.10.02.02 (02)Sulfides - Including Selenides and Tellurides

(02.10)where Am Bn Xp, with (m+n):p=3:4

(02.10.02)Wilkmanite Group

02.10.02.01 Wilkmanite Ni3Se4 I2/m 2/m

02.10.02.02 Brezinaite Cr3S4 I2/m 2/m

02.10.02.03 Heideite (Fe,Cr)1x(Ti,Fe)2S4 I2/m 2/m

02.10.02.04 Kingstonite! (Rh,Ir,Pt)3S4 C 2/m 2/m

Strunz Class:

02.DA.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.D - Metal Sulfides, M:S = 3:4 and 2:3

02.DA -M:S = 3:4

02.DA.15 Brezinaite Cr3S4 I2/m 2/m

02.DA.15 Heideite (Fe,Cr)1x(Ti,Fe)2S4 I2/m 2/m

02.DA.15 Wilkmanite Ni3Se4 I2/m 2/m

Other Brezinaite Information

References:

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

See Also:

Links to other databases for Brezinaite :
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

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Print or Cut-and-Paste your Brezinaite Specimen Label here :

Brezinaite

Cr3S4
Dana No: 02.10.02.02 Strunz No: 02.DA.15
Locality:

Notes: