Tvalchrelidzeite Mineral Data

General Tvalchrelidzeite Information

Chemical Formula:

Hg3SbAsS3

Composition:

Molecular Weight = 904.31 gm

Mercury 67.21 % Hg

Antimony 13.87 % Sb

Arsenic 8.28 % As

Sulfur 10.64 % S

______

100.00 %

Empirical Formula:

Hg_3.03Sb_1.03AsS₃

Environment:

In a hydrothermal As-Sb-Hg deposit.

IMA Status:

Approved IMA 1975

Locality:

In the Gomi deposit, Caucasus mountains, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for A. A. Tvalchrelidze, founder of the Georgian Mineralogical-Petrographic School, Russia.

Name Pronunciation:

Tvalchrelidzeite + Pronunciation

Tvalchrelidzeite Crystallography

Axial Ratios:

a:b:c =2.6344:1:3.5659

Cell Dimensions:

a = 11.5526, b = 4.3852, c = 15.6373, Z = 4; beta = 91.845° V = 791.78 Den(Calc)= 7.59

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/n

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

By Intensity(I/I_o): 2.92(1), 2.98(1), 3.49(1),

Physical Properties of Tvalchrelidzeite

Cleavage:

{???} Perfect

Color:

Lead gray.

Density:

7.38

Diaphaneity:

Translucent to Opaque

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

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

Hardness:

3 - Calcite

Luster:

Adamantine

Streak:

reddish black

Optical Properties of Tvalchrelidzeite

RL Anisotrophism:

Distinct, dark olive to dark violet.

RL Color:

Whitish lead gray, with dark red internal reflections, cherry red in transmitted light.

RL Pleochroism:

White to grayish white, weak lilac to a distinctly greenish tint.

Calculated Properties of Tvalchrelidzeite

Electron Density:

Bulk Density (Electron Density)=6.31 gm/cc
note: Specific Gravity of Tvalchrelidzeite =7.59 gm/cc.

Fermion Index:

Fermion Index = 0.2
Boson Index = 0.8

Photoelectric:

PE_{Tvalchrelidzeite}=1,200.32 barns/electron
U=PE_{Tvalchrelidzeite} x rElectron Density=7,574.57 barns/cc.

Radioactivity:

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

Tvalchrelidzeite Classification

Dana Class:

03.08.03.01 (03)Sulfides - Sulfosalts

(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.08.03)Dana Group

03.08.03.01 Tvalchrelidzeite Hg3SbAsS3 P 2₁/n 2/m

Strunz Class:

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

02.G - Sulfarsenites, sulfantimonites, sulfbismuthites

02.GC -Poly-sulfarsenites

02.GC.45 Tvalchrelidzeite Hg3SbAsS3 P 2₁/n 2/m

Other Tvalchrelidzeite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Dana8, AmMin v93:1691) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Tvalchrelidzeite :
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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Tvalchrelidzeite

Hg3SbAsS3
Dana No: 03.08.03.01 Strunz No: 02.GC.45
Locality:

Notes:

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