Mineralogy Database

Heterogenite-2H Mineral Data

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General Heterogenite-2H Information

Help on Chemical  Formula: Chemical Formula: Co+++O(OH)
Help on Composition: Composition: Molecular Weight = 91.94 gm
   Cobalt    64.10 %  Co   90.20 % Co2O3
   Hydrogen   1.10 %  H     9.80 % H2O
   Oxygen    34.80 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CoO(OH)
Help on Environment: Environment: A weathering product of smaltite, an alteration product of linnaeite, and widespread in residual soils above ultramafic rocks.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: Midigi, Shaba, Congo (Zaire). Schneeberg, Sachsen (Saxony), Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek for "of another kind", as differing in composition from similar minerals. 2H polytype.
Help on Name Pronunciation: Name Pronunciation: Heterogenite-2H + Pronunciation Say HETEROGENITE-2H

Heterogenite-2H Image

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Comments: Shiny black botryoidal heterogenite-2H.
Location: Star of the Congo mine, Katanga, Congo. Scale: 6 cm.
© John Attard

Heterogenite-2H Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:3.08406
Help on Cell Dimensions: Cell Dimensions: a = 2.855, c = 8.805, Z = 2; V = 62.15 Den(Calc)= 4.91
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.39(1), 1.236(0.9), 2.158(0.8),

Physical Properties of Heterogenite-2H

Help on Cleavage: Cleavage: {0001} Good
Help on Color: Color: Black, Steel gray.
Help on Density: Density: 4.3
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: dark brown

Optical Properties of Heterogenite-2H

Help on Optical Data: Optical Data: NCalc= 2.62 - from Gladstone-Dale relationship (KC = 0.3301) where Ncalc=Dcalc*KC+1
NCalc= 2.42 - from Gladstone-Dale relationship (KC = 0.3301) where Ncalc=Dmeas*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Strong, bluish to yellowish white, browns.
Help on RL Bireflectance: RL Bireflectance: Very strong.
Help on RL Color: RL Color: White with a brownish tinge.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Heterogenite-2H in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   15.00   30.40 
 420 nm   15.80   30.40 
 440 nm   16.60   30.40 
 460 nm   16.70   29.80 
 480 nm   16.60   28.80 
 500 nm   16.30   27.80 
 520 nm   16.20   27.00 
 540 nm   16.30   26.40 
 560 nm   16.60   26.00 
 580 nm   16.70   25.60 
 600 nm   16.70   25.30 
 620 nm   16.50   25.00 
 640 nm   16.40   24.80 
 660 nm   16.20   24.50 
 680 nm   16.00   24.20 
 700 nm   15.80   23.80 
Calculated Relative Intensity Colors of Heterogenite-2H in Air
   0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540%

Calculated Properties of Heterogenite-2H

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.70 gm/cc
note: Specific Gravity of Heterogenite-2H =4.91 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001687038
Boson Index = 0.9998312962
Help on Photoelectric: Photoelectric: PEHeterogenite-2H = 21.98 barns/electron
U=PEHeterogenite-2H x rElectron Density= 103.28 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Heterogenite-2H is Not Radioactive

Heterogenite-2H Classification

Help on  Dana Class: Dana Class: (06)Hydroxides and Oxides Containing Hydroxyl
  (06.01)where X+++O OH
  (06.01.04)Heterogenite Group Heterogenite-2H CoO(OH) P 63/mmc 6/m 2/m 2/m Heterogenite-3R CoO(OH) R 3m 3 2/m Feitknechtite beta-MnO(OH) Unk Hex Feroxyhyte FeO(OH) Unk Hex
Help on  Strunz Class: Strunz Class: 04.FE.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
04.FE.20 Grimaldiite CrO(OH) R 3m 3 2/m
04.FE.20 Heterogenite-2H CoO(OH) P 63/mmc 6/m 2/m 2/m
04.FE.20 Heterogenite-3R CoO(OH) R 3m 3 2/m

Other Heterogenite-2H Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Heterogenite-2H :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Dana No: Strunz No: 04.FE.20





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