Mineralogy Database

Hastite Mineral Data

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General Hastite Information

Help on Chemical  Formula: Chemical Formula: CoSe2
Help on Composition: Composition: Molecular Weight = 216.85 gm
   Cobalt    27.18 %  Co
   Selenium  72.82 %  Se
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: CoSe2
Help on Environment: Environment: In hydrothermal veins. Hastite (1955) was shown to be ferroselite
Help on IMA Status: IMA Status: Discredited IMA 2008 - Valid Species (Pre-IMA) 1955
Help on Locality: Locality: In Germany, from the Trogtal quarry, near Lautenthal, in the upper Harz. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Dr. P.F. Hast, mining engineer.
Help on Name Pronunciation: Name Pronunciation: Hastite Say HASTITE
Help on Synonym: Synonym: ICSD 42540
  PDF 10-408
 

Hastite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7438:1:1.1818
Help on Cell Dimensions: Cell Dimensions: a = 3.6, b = 4.84, c = 5.72, Z = 2; V = 99.67 Den(Calc)= 7.23
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.9(1), 2.5(1), 2.6(1),
 

Physical Properties of Hastite

Help on Color: Color: Brownish red, Red violet.
Help on Density: Density: 7.22
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Metallic
 

Optical Properties of Hastite

Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Pleochroism: RL Pleochroism: Strong, especially in oil.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Hastite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   46.60   47.20 
   
 420 nm   46.40   47.70 
 440 nm   46.20   48.20 
 460 nm   46.10   48.80 
 480 nm   46.00   49.60 
 500 nm   46.20   50.40 
 520 nm   46.60   51.20 
 540 nm   46.90   52.20 
 560 nm   47.40   53.30 
 580 nm   47.90   54.20 
 600 nm   48.50   55.40 
 620 nm   49.10   56.40 
 640 nm   49.70   57.20 
 660 nm   50.40   58.00 
 680 nm   51.00   58.60 
 700 nm   51.40   59.00 
Calculated Relative Intensity Colors of Hastite in Air
Relative
Intensity
   0%   20%   40%   60%   80% 100% 120% 140% 160% 180% 190%
R1                      
R2                      
 

Calculated Properties of Hastite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.33 gm/cc
note: Specific Gravity of Hastite =7.23 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEHastite = 68.46 barns/electron
U=PEHastite x rElectron Density= 433.64 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hastite is Not Radioactive
 

Hastite Classification

Help on  Dana Class: Dana Class: 02.12.02.04 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.02)Marcasite Group (Orthorhombic: Pnnm)
 
02.12.02.01 Marcasite FeS2 Pnnm 2/m 2/m 2/m
 
02.12.02.02 Ferroselite FeSe2 Pnnm 2/m 2/m 2/m
 
02.12.02.03 Frohbergite FeTe2 Pnnm 2/m 2/m 2/m
 
02.12.02.04 Hastite? CoSe2 Pnnm 2/m 2/m 2/m
 
02.12.02.05 Mattagamite CoTe2 Pnnm 2/m 2/m 2/m
 
02.12.02.06 Kullerudite NiSe2 Pnnm 2/m 2/m 2/m
 
02.12.02.07 Omeiite (Os,Ru)As2 Pnnm 2/m 2/m 2/m
 
02.12.02.08 Anduoite (Ru,Os)As2 Pnnm 2/m 2/m 2/m
 
02.12.02.09 Lollingite FeAs2 Pnnm 2/m 2/m 2/m
 
02.12.02.10 Seinajokite (Fe,Ni)(Sb,As)2 Pnnm 2/m 2/m 2/m
 
02.12.02.11 Safflorite (Co,Fe)As2 Pnnm 2/m 2/m 2/m
 
02.12.02.12 Rammelsbergite NiAs2 Pnnm 2/m 2/m 2/m
 
02.12.02.13 Nisbite NiSb2 Pnnm 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.EB.10a 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.10a Frohbergite FeTe2 Pnnm 2/m 2/m 2/m
 
02.EB.10a Hastite? CoSe2 Pnnm 2/m 2/m 2/m
 
02.EB.10a Ferroselite FeSe2 Pnnm 2/m 2/m 2/m
 
02.EB.10a Kullerudite NiSe2 Pnnm 2/m 2/m 2/m
 
02.EB.10a Mattagamite CoTe2 Pnnm 2/m 2/m 2/m
 
02.EB.10a Marcasite FeS2 Pnnm 2/m 2/m 2/m
 

Other Hastite 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 Hastite :
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 Hastite Specimen Label here :

Hastite

CoSe2
Dana No: 02.12.02.04 Strunz No: 02.EB.10a
Locality:

 

Notes:

 

 
   
 


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