Gruzdevite Mineral Data

General Gruzdevite Information

Chemical Formula:

Cu6Hg3Sb4S12

Composition:

Molecular Weight = 1,854.84 gm

Copper 20.56 % Cu

Mercury 32.44 % Hg

Antimony 26.26 % Sb

Sulfur 20.75 % S

______

100.00 %

Empirical Formula:

Cu₆Hg₃Sb₄S₁₂

Environment:

In veinlets of probable low-temperature hydrothermal origin.

IMA Status:

Approved IMA 1981

Locality:

At the Chauvai Sb-Hg deposit, southern Kirgizia, USSR. Link to MinDat.org Location Data.

Name Origin:

To honor the Russian mineralogist, V.S. Gruzdev (1938-1977).

Name Pronunciation:

Gruzdevite + Pronunciation

Gruzdevite Image

Images:

Gruzdevite

Comments: Black aggregates of gruzdevite in matrix.
Location: Moctezuma mine, Sonora, Mexico. Scale: Picture Size 1 cm.
© Rhonda Spencer / ASDM Sonoran Desert Digital Library

Gruzdevite Crystallography

Axial Ratios:

a:c = 1:0.67856

Cell Dimensions:

a = 13.9, c = 9.432, Z = 3; V = 1,578.21 Den(Calc)= 5.85

Crystal System:

Trigonal - PyramidalH-M Symbol (3) Space Group: R 3

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

By Intensity(I/I_o): 3.16(1), 1.929(0.9), 1.645(0.8),

Physical Properties of Gruzdevite

Cleavage:

None

Color:

Grayish black.

Density:

5.88

Diaphaneity:

Opaque

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Metallic

Optical Properties of Gruzdevite

RL Anisotrophism:

Weak.

RL Color:

White.

Calculated Properties of Gruzdevite

Electron Density:

Bulk Density (Electron Density)=5.11 gm/cc
note: Specific Gravity of Gruzdevite =5.85 gm/cc.

Fermion Index:

Fermion Index = 0.09
Boson Index = 0.91

Photoelectric:

PE_Gruzdevite= 625.30 barns/electron
U=PE_Gruzdevite x rElectron Density=3,194.86 barns/cc.

Radioactivity:

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

Gruzdevite Classification

Dana Class:

03.04.13.03 (03)Sulfides - Sulfosalts

(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.04.13)Dana Group

03.04.13.01 Nowackiite Cu6Zn3As4S12 R 3 3

03.04.13.02 Aktashite Cu6Hg3As4S12 R 3 3

03.04.13.03 Gruzdevite Cu6Hg3Sb4S12 R 3 3

Strunz Class:

02.GA.30 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.G - Sulfarsenites, sulfantimonites, sulfbismuthites

02.GA -Neso-sulfarsenites, etc., without additional S

02.GA.30 Aktashite Cu6Hg3As4S12 R 3 3

02.GA.30 Gruzdevite Cu6Hg3Sb4S12 R 3 3

02.GA.30 Nowackiite Cu6Zn3As4S12 R 3 3

Other Gruzdevite Information

References:

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

See Also:

Links to other databases for Gruzdevite :
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 Gruzdevite Specimen Label here :

Gruzdevite

Cu6Hg3Sb4S12
Dana No: 03.04.13.03 Strunz No: 02.GA.30
Locality:

Notes: