Mineralogy Database

Gaotaiite Mineral Data

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General Gaotaiite Information

Help on Chemical  Formula: Chemical Formula: Ir3Te8
Help on Composition: Composition: Molecular Weight = 1,597.46 gm
   Tellurium  63.90 %  Te
   Iridium    36.10 %  Ir
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Ir3Te8
Help on Environment: Environment: A constituent of placer deposits and crushed ores of a chromium deposit.
Help on IMA Status: IMA Status: Approved IMA 1995
Help on Locality: Locality: Near the village of Gaotai, about 200 km NNE of Beijing, People's Republic of China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Gaotaiite + Pronunciation Say GAOTAIITE
Help on Synonym: Synonym: IMA1993-017
 

Gaotaiite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 6.413, Z = 1; V = 263.74 Den(Calc)= 10.06
Help on Crystal System: Crystal System: Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.93(1), 1.132(0.9), 1.235(0.8),
 

Physical Properties of Gaotaiite

Help on Cleavage: Cleavage: None
Help on Color: Color: Steel black.
Help on Density: Density: 9.97
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Metallic
Help on Streak: Streak: black
 

Optical Properties of Gaotaiite

Help on RL Anisotrophism: RL Anisotrophism: Weak with bluish or yellowish tint.
Help on RL Bireflectance: RL Bireflectance: Not noticable.
Help on RL Color: RL Color: Bright white with bluish tint.
Help on RL Pleochroism: RL Pleochroism: Not noticable.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Gaotaiite in Air
λ R  ∑ R(λ) 
 470 nm   46.60   
 546 nm   46.30 
 589 nm   46.30 
 650 nm   45.60 
Calculated Relative Intensity Colors of Gaotaiite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 200%
R                  
 

Calculated Properties of Gaotaiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=8.15 gm/cc
note: Specific Gravity of Gaotaiite =10.1 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEGaotaiite = 794.05 barns/electron
U=PEGaotaiite x rElectron Density=6,470.72 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gaotaiite is Not Radioactive
 

Gaotaiite Classification

Help on  Dana Class: Dana Class: 02.12.01.18 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.01)Pyrite Group (Isometric: Pa3)
 
02.12.01.01 Pyrite FeS2 P a3 2/m 3
 
02.12.01.02 Vaesite NiS2 P a3 2/m 3
 
02.12.01.03 Cattierite CoS2 P a3 2/m 3
 
02.12.01.04 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3
 
02.12.01.05 Trogtalite CoSe2 P a3 2/m 3
 
02.12.01.06 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3
 
02.12.01.07 Fukuchilite Cu3FeS8 P a3 2/m 3
 
02.12.01.08 Krutaite CuSe2 P a3 2/m 3
 
02.12.01.09 Hauerite MnS2 P a3 2/m 3
 
02.12.01.10 Laurite RuS2 P a3 2/m 3
 
02.12.01.11 Aurostibite AuSb2 P a3 2/m 3
 
02.12.01.12 Krutovite NiAs2 P a3 2/m 3
 
02.12.01.13 Sperrylite PtAs2 P a3 2/m 3
 
02.12.01.14 Geversite Pt(Sb,Bi)2 P a3 2/m 3
 
02.12.01.15 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3
 
02.12.01.16 Erlichmanite OsS2 P a3 2/m 3
 
02.12.01.17 Dzharkenite FeSe2 P a3 2/m 3
 
02.12.01.18 Gaotaiite Ir3Te8 P a3 2/m 3
 
02.12.01.19 Mayingite IrBiTe P a3 2/m 3
Help on  Strunz Class: Strunz Class: 02.EB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S � 1:2
  02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.
 
02.EB.05a Aurostibite AuSb2 P a3 2/m 3
 
02.EB.05a Cattierite CoS2 P a3 2/m 3
 
02.EB.05a Hauerite MnS2 P a3 2/m 3
 
02.EB.05a Fukuchilite Cu3FeS8 P a3 2/m 3
 
02.EB.05a Dzharkenite FeSe2 P a3 2/m 3
 
02.EB.05a Erlichmanite OsS2 P a3 2/m 3
 
02.EB.05a Geversite Pt(Sb,Bi)2 P a3 2/m 3
 
02.EB.05a Gaotaiite Ir3Te8 P a3 2/m 3
 
02.EB.05a Insizwaite Pt(Bi,Sb)2 P a3 2/m 3
 
02.EB.05a Laurite RuS2 P a3 2/m 3
 
02.EB.05a Krutaite CuSe2 P a3 2/m 3
 
02.EB.05a Pyrite FeS2 P a3 2/m 3
 
02.EB.05a Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3
 
02.EB.05a Sperrylite PtAs2 P a3 2/m 3
 
02.EB.05a Vaesite NiS2 P a3 2/m 3
 
02.EB.05a Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3
 
02.EB.05a Trogtalite CoSe2 P a3 2/m 3
 

Other Gaotaiite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,1996) OPTIC PROP.(MinRec, v 27, p 117)
Help on See Also: See Also: Links to other databases for Gaotaiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Gaotaiite

Ir3Te8
Dana No: 02.12.01.18 Strunz No: 02.EB.05a
Locality:

 

Notes:

 

 
   
 


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