Mineralogy Database

Gallite Mineral Data

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General Gallite Information

Help on Chemical  Formula: Chemical Formula: CuGaS2
Help on Composition: Composition: Molecular Weight = 197.40 gm
   Gallium  35.32 %  Ga
   Copper   32.19 %  Cu
   Sulfur   32.49 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: CuGaS2
Help on Environment: Environment: In base-metal vein deposits with relatively high gallium content.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: At Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the mineral's gallium content.
Help on Name Pronunciation: Name Pronunciation: Gallite Say GALLITE
Help on Synonym: Synonym: ICSD 28736
  PDF 25-279
 

Gallite Image

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  Gallite

Comments: A mixture of massive high grade ore with grains of gallite (gray) occuring with germanite and renierite. Most of what can be seen is the renierite, which has reddish and purple iridescence.
Location: Tsumeb, Namibia. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Gallite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.95887
Help on Cell Dimensions: Cell Dimensions: a = 5.35, c = 10.48, Z = 4; V = 299.96 Den(Calc)= 4.37
Help on Crystal System: Crystal System: Tetragonal - Scalenohedral H-M Symbol (4 2m) Space Group: I 42d
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.064(1), 1.876(0.7), 1.611(0.6),
 

Physical Properties of Gallite

Help on Color: Color: Gray.
Help on Density: Density: 4.2
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luster: Luster: Metallic
Help on Streak: Streak: grayish black
 

Optical Properties of Gallite

Help on RL Anisotrophism: RL Anisotrophism: Low.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Gallite in Air
λ R  ∑ R(λ) 
 400 nm   22.00   
 420 nm   21.80 
 440 nm   21.60 
 460 nm   21.30 
 480 nm   20.80 
 500 nm   20.40 
 520 nm   19.70 
 540 nm   19.20 
 560 nm   18.80 
 580 nm   18.60 
 600 nm   18.70 
 620 nm   18.80 
 640 nm   18.90 
 660 nm   19.10 
 680 nm   19.40 
 700 nm   19.50 
Calculated Relative Intensity Colors of Gallite in Air
Relative
Intensity
   0%   50% 100% 150% 200% 250% 300% 350% 400% 450% 460%
R                      
 

Calculated Properties of Gallite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.07 gm/cc
note: Specific Gravity of Gallite =4.37 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0024366138
Boson Index = 0.9975633862
Help on Photoelectric: Photoelectric: PEGallite = 36.07 barns/electron
U=PEGallite x rElectron Density= 146.93 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gallite is Not Radioactive
 

Gallite Classification

Help on  Dana Class: Dana Class: 02.09.01.03 (02)Sulfides - Including Selenides and Tellurides
  (02.09)where Am Bn Xp, with (m+n):p=1:1
  (02.09.01)Chalcopyrite Group (Tetragonal: I-42d)
 
02.09.01.01 Chalcopyrite CuFeS2 I 42d 4 2m
 
02.09.01.02 Eskebornite CuFeSe2 I 42d 4 2m
 
02.09.01.03 Gallite CuGaS2 I 42d 4 2m
 
02.09.01.04 Roquesite CuInS2 I 42d 4 2m
 
02.09.01.05 Lenaite AgFeS2 P 42mc 4mm
 
02.09.01.06 Laforetite! AgInS2 I 42d 4 2m
Help on  Strunz Class: Strunz Class: 02.CB.10a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.C - Metal Sulfides, M:S = 1:1 (and similar)
  02.CB -With Zn, Fe, Cu, Ag, Au, etc
 
02.CB.10a Chalcopyrite CuFeS2 I 42d 4 2m
 
02.CB.10a Eskebornite CuFeSe2 I 42d 4 2m
 
02.CB.10a Gallite CuGaS2 I 42d 4 2m
 
02.CB.10a Laforetite! AgInS2 I 42d 4 2m
 
02.CB.10a Lenaite AgFeS2 P 42mc 4mm
 
02.CB.10a Roquesite CuInS2 I 42d 4 2m
 

Other Gallite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Gallite :
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 Gallite Specimen Label here :

Gallite

CuGaS2
Dana No: 02.09.01.03 Strunz No: 02.CB.10a
Locality:

 

Notes:

 

 
   
 


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