Mineralogy Database

Cuprostibite Mineral Data

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General Cuprostibite Information

Help on Chemical  Formula: Chemical Formula: Cu2(Sb,Tl)
Help on Composition: Composition: Molecular Weight = 265.37 gm
   Thallium  15.40 %  Tl
   Copper    47.89 %  Cu
   Antimony  36.70 %  Sb
            100.00 % 
Help on Empirical Formula: Empirical Formula: Cu2Sb0.8Tl0.2
Help on Environment: Environment: In a vein in sodalite syenite and in mineralized dolomite.
Help on IMA Status: IMA Status: Approved IMA 1969
Help on Locality: Locality: Mt. Nakalak, near Narssaq, Greenland. Langban and Langsjon, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition.
Help on Synonym: Synonym: ICSD 42323
  PDF 22-601

Cuprostibite Image

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  Cuprostibite   Ussingite

Comments: Massive ussingite hosting grains of the very rare copper antimony-thallium bearing cuprostibite.
Location: Ilimaussaq, Tasseq, Greenland. Scale: 4.8 x3.4 cm.
© John Veevaert

Cuprostibite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.52631
Help on Cell Dimensions: Cell Dimensions: a = 3.99, c = 6.09, Z = 2; V = 96.95 Den(Calc)= 9.09
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.07(1), 2.56(0.5), 2.82(0.4),

Physical Properties of Cuprostibite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Steel gray.
Help on Density: Density: 8.42
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic

Optical Properties of Cuprostibite

Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Color: RL Color: Violet -rose.
Help on RL Pleochroism: RL Pleochroism: Creamy white to dark rose-violet.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Cuprostibite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   56.00   60.80 
 420 nm   54.90   59.40 
 440 nm   53.80   58.00 
 460 nm   51.10   55.10 
 480 nm   48.70   52.80 
 500 nm   46.40   50.50 
 520 nm   42.90   48.30 
 540 nm   38.70   45.50 
 560 nm   36.70   43.90 
 580 nm   37.90   44.00 
 600 nm   42.20   45.90 
 620 nm   47.60   48.60 
 640 nm   52.90   51.90 
 660 nm   57.70   54.50 
 680 nm   61.30   56.90 
 700 nm   65.00   57.60 
Calculated Relative Intensity Colors of Cuprostibite in Air
   0%   30%   60%   90% 100% 120% 150% 180% 210%

Calculated Properties of Cuprostibite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.88 gm/cc
note: Specific Gravity of Cuprostibite =9.09 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0
Boson Index = 1
Help on Photoelectric: Photoelectric: PECuprostibite = 409.08 barns/electron
U=PECuprostibite x rElectron Density=3,222.96 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cuprostibite is Not Radioactive

Cuprostibite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.04)where Am Bn Xp, with (m+n):p=2:1
  (02.04.11)Dana Group Cuprostibite Cu2(Sb,Tl) P 4/nmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.AA.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.A - Simple Sulfides, Selenides, etc
  02.AA -Alloys of metalloids with Cu, Ag, Sn, Au
02.AA.20 Cuprostibite Cu2(Sb,Tl) P 4/nmm 4/m 2/m 2/m

Other Cuprostibite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Cuprostibite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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Dana No: Strunz No: 02.AA.20





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