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Galkhaite Mineral Data
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General Galkhaite Information
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 Chemical Formula: |
(Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12 |
| Composition: |
Molecular Weight = 1,727.48 gm |
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Cesium 4.62 % Cs |
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Thallium 4.73 % Tl |
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Zinc 3.79 % Zn |
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Copper 5.52 % Cu |
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Mercury 40.64 % Hg |
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Antimony 2.82 % Sb |
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Arsenic 15.61 % As |
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Sulfur 22.27 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cs0.6Tl0.4Hg3.5Cu1.5ZnAs3.6Sb0.4S12 |
| Environment: |
Hydrothermal Hg-Au deposits. |
| IMA Status: |
Approved IMA 1972 |
| Locality: |
In the mercury deposits of Gal-Khaya, Yakutia, and Khaidarkan, Kirgizia, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Galkhaite + Pronunciation  |
| Synonym: |
ICSD 38361 |
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PDF 35-553 |
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Galkhaite Image |
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Images:
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Galkhaite
Comments: Cherry red crystals of galkhaite on matrix.
Location: Getchell mine, Humboldt County, Nevada, USA.
Scale: Crystal size 1 mm.
© John Veevaert |
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Galkhaite Crystallography
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| Cell Dimensions: |
a = 10.365, Z = 2; V = 1,113.55 Den(Calc)= 5.15 |
| Crystal System: |
Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: I 43m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.992(1), 4.232(0.85), 2.77(0.8), |
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Physical Properties of Galkhaite
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| Color: |
Orange red, Reddish, Black. |
| Density: |
5.4 |
| Diaphaneity: |
Opaque |
| Fracture: |
Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments. |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Hardness: |
3 - Calcite |
| Luster: |
Vitreous - Adamantine |
| Streak: |
orange |
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Optical Properties of Galkhaite
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| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Galkhaite in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
30.50 |
 |
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| 420 nm |
29.70 |
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| 440 nm |
29.30 |
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| 460 nm |
28.80 |
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| 480 nm |
28.00 |
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| 500 nm |
26.80 |
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| 520 nm |
26.60 |
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| 540 nm |
24.60 |
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| 560 nm |
23.80 |
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| 580 nm |
23.10 |
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| 600 nm |
22.60 |
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| 620 nm |
22.20 |
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| 640 nm |
21.90 |
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| 660 nm |
21.60 |
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| 680 nm |
21.40 |
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| 700 nm |
21.20 |
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Calculated Relative Intensity Colors of Galkhaite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
360% |
380% |
| R |
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Calculated Properties of Galkhaite
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| Electron Density: |
Bulk Density (Electron Density)=4.47 gm/cc
note: Specific Gravity of Galkhaite =5.15 gm/cc.
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| Fermion Index: |
Fermion Index = 0.12
Boson Index = 0.88 |
| Photoelectric: |
PEGalkhaite = 790.05 barns/electron
U=PEGalkhaite x rElectron Density=3,533.45 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Galkhaite is Not Radioactive |
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Galkhaite Classification
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| Dana Class: |
03.04.14.01 (03)Sulfides - Sulfosalts |
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(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.04.14)Dana Group |
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03.04.14.01 Galkhaite (Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12 I 43m 4 3m |
| Strunz Class: |
02.GB.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.G - Sulfarsenites, sulfantimonites, sulfbismuthites |
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02.GB -Neso-sulfarsenites, etc |
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02.GB.20 Galkhaite (Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12 I 43m 4 3m |
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Other Galkhaite Information
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| References: |
NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Galkhaite :
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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Galkhaite
(Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12
Dana No: 03.04.14.01 Strunz No: 02.GB.20
Locality:
Notes:
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