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Heterogenite-2H Mineral Data
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General Heterogenite-2H Information
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 Chemical Formula: |
Co+++O(OH) |
| Composition: |
Molecular Weight = 91.94 gm |
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Cobalt 64.10 % Co 90.20 % Co2O3 |
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Hydrogen 1.10 % H 9.80 % H2O |
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Oxygen 34.80 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
CoO(OH) |
| Environment: |
A weathering product of smaltite, an alteration product of linnaeite, and widespread in residual soils above ultramafic rocks. |
| IMA Status: |
Approved IMA 1973 |
| Locality: |
Midigi, Shaba, Congo (Zaire). Schneeberg, Sachsen (Saxony), Germany Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek for "of another kind", as differing in composition from similar minerals. 2H polytype. |
| Name Pronunciation: |
Heterogenite-2H + Pronunciation  |
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Heterogenite-2H Image |
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Images:
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Heterogenite-2H
Comments: Shiny black botryoidal heterogenite-2H.
Location: Star of the Congo mine, Katanga, Congo.
Scale: 6 cm.
© John Attard |
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Heterogenite-2H Crystallography
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| Axial Ratios: |
a:c = 1:3.08406 |
| Cell Dimensions: |
a = 2.855, c = 8.805, Z = 2; V = 62.15 Den(Calc)= 4.91 |
| Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
| X Ray Diffraction: |
By Intensity(I/Io): 4.39(1), 1.236(0.9), 2.158(0.8), |
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Physical Properties of Heterogenite-2H
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| Cleavage: |
{0001} Good |
| Color: |
Black, Steel gray. |
| Density: |
4.3 |
| Diaphaneity: |
Opaque |
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
| Hardness: |
3-4 - Calcite-Fluorite |
| Luster: |
Metallic |
| Streak: |
dark brown |
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Optical Properties of Heterogenite-2H
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| 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
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| RL Anisotrophism: |
Strong, bluish to yellowish white, browns. |
| RL Bireflectance: |
Very strong. |
| RL Color: |
White with a brownish tinge. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Heterogenite-2H in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
15.00 |
30.40 |
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| 420 nm |
15.80 |
30.40 |
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| 440 nm |
16.60 |
30.40 |
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| 460 nm |
16.70 |
29.80 |
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| 480 nm |
16.60 |
28.80 |
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| 500 nm |
16.30 |
27.80 |
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| 520 nm |
16.20 |
27.00 |
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| 540 nm |
16.30 |
26.40 |
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| 560 nm |
16.60 |
26.00 |
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| 580 nm |
16.70 |
25.60 |
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| 600 nm |
16.70 |
25.30 |
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| 620 nm |
16.50 |
25.00 |
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| 640 nm |
16.40 |
24.80 |
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| 660 nm |
16.20 |
24.50 |
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| 680 nm |
16.00 |
24.20 |
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| 700 nm |
15.80 |
23.80 |
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Calculated Relative Intensity Colors of Heterogenite-2H in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
540% |
| R1 |
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| R2 |
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Calculated Properties of Heterogenite-2H
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| Electron Density: |
Bulk Density (Electron Density)=4.70 gm/cc
note: Specific Gravity of Heterogenite-2H =4.91 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0001687038
Boson Index = 0.9998312962 |
| Photoelectric: |
PEHeterogenite-2H = 21.98 barns/electron
U=PEHeterogenite-2H x rElectron Density= 103.28 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Heterogenite-2H is Not Radioactive |
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Heterogenite-2H Classification
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| Dana Class: |
06.01.04.01 (06)Hydroxides and Oxides Containing Hydroxyl |
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(06.01)where X+++O OH |
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(06.01.04)Heterogenite Group |
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06.01.04.01 Heterogenite-2H CoO(OH) P 63/mmc 6/m 2/m 2/m |
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06.01.04.02 Heterogenite-3R CoO(OH) R 3m 3 2/m |
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06.01.04.03 Feitknechtite beta-MnO(OH) Unk Hex |
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06.01.04.04 Feroxyhyte FeO(OH) Unk Hex |
| Strunz Class: |
04.FE.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.F - Hydroxides (without V or U) |
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04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra |
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04.FE.20 Grimaldiite CrO(OH) R 3m 3 2/m |
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04.FE.20 Heterogenite-2H CoO(OH) P 63/mmc 6/m 2/m 2/m |
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04.FE.20 Heterogenite-3R CoO(OH) R 3m 3 2/m |
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Other Heterogenite-2H Information
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3) |
| 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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Print or Cut-and-Paste your Heterogenite-2H Specimen Label here :
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Heterogenite-2H
Co+++O(OH)
Dana No: 06.01.04.01 Strunz No: 04.FE.20
Locality:
Notes:
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