Christite Mineral Data

General Christite Information

Chemical Formula:

TlHgAsS3

Composition:

Molecular Weight = 576.09 gm

Thallium 35.48 % Tl

Mercury 34.82 % Hg

Arsenic 13.01 % As

Sulfur 16.70 % S

______

100.00 %

Empirical Formula:

TlHgAsS₃

Environment:

Dimorphous with routhierite.

IMA Status:

Approved IMA 1977

Locality:

At the Carlin gold deposit, 50 km northwest of Elko, Eureka Co., Nevada, USA. Link to MinDat.org Location Data.

Name Origin:

For Dr. Charles L. Christ, mineralogist with the U.S. Geological Survey.

Synonym:

ICSD 33705

PDF 29-1337

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Christite Crystallography

Axial Ratios:

a:b:c =0.3776:1:0.3775

Cell Dimensions:

a = 6.113, b = 16.188, c = 6.111, Z = 4; beta = 96.71° V = 600.59 Den(Calc)= 6.37

Crystal System:

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

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

By Intensity(I/I_o): 2.98(1), 3.62(0.8), 3.49(0.6),

Crystal Structure:

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Brown K L , Dickson F W , Zeitschrift fur Kristallographie , 144 (1976) p.367-376, The crystal structure of synthetic christite, HgTlAsS3, Locality: synthetic

Physical Properties of Christite

Cleavage:

{010} Perfect, {110} Perfect, {101} Good

Color:

Crimson red, Bright orange.

Density:

6.2

Hardness:

1-2 - Between Talc and Gypsum

Luster:

Adamantine

Streak:

light orange

Calculated Properties of Christite

Electron Density:

Bulk Density (Electron Density)=5.35 gm/cc
note: Specific Gravity of Christite =6.37 gm/cc.

Fermion Index:

Fermion Index = 0.1
Boson Index = 0.9

Photoelectric:

PE_Christite=1,218.74 barns/electron
U=PE_Christite x rElectron Density=6,522.35 barns/cc.

Radioactivity:

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

Christite Classification

Dana Class:

03.04.10.01 (03)Sulfides - Sulfosalts

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

(03.04.10)Dana Group

03.04.10.01 Christite TlHgAsS3 P 2₁/n 2/m

03.04.10.02 Laffittite AgHgAsS3 Aa m

03.04.10.03 IMA2007-010! PbHgAs2S6 P lattice Mono

Strunz Class:

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

02.H - Sulfosalts of SnS Archetype

02.HD -With Tl

02.HD.15 Christite TlHgAsS3 P 2₁/n 2/m

Other Christite Information

References:

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

See Also:

Links to other databases for Christite :
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
15 - WWW-MINCRYST

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

Christite

TlHgAsS3
Dana No: 03.04.10.01 Strunz No: 02.HD.15
Locality:

Notes: