Akhtenskite Mineral Data + 
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- 4.4.10.1 Akhtenskite MnO2 P 63/mmc 6/m 2/m 2/m
- IV/D.10-10 Ramsdellite MnO2 Pbnm 2/m 2/m 2/m
- IV/D.10-15 Akhtenskite MnO2 P 63/mmc 6/m 2/m 2/m
- IV/D.10-20 Nsutite (Mn1-x)(Mnx)(O2-2x)(OH2x)wherex=0.06-0.07 Unk Hex
- IV/D.10-30 Vernadite (Mn,Fe,Ca,Na)(O,OH)2·n(H2O) I 4/m 4/m
General Akhtenskite Information |
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 Chemical Formula: |
Mn++++O2 | ||
| Composition: |
Molecular Weight = 86.94 gm | ||
| Manganese 63.19 % Mn 100.00 % MnO2 | |||
| Oxygen 36.81 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Mn4+O2 | ||
| Environment: |
In mixtures in "psilomelane" with other manganese oxides in an iron oxide deposit, probably bacterially altered from a previous mineral (Akhtensk deposit, Russia); in incrustations of ferromanganese minerals on oceanic | ||
| IMA Status: |
Approved IMA 1979 | ||
| Locality: |
In the Akhtensk brown ironstone deposit, Southern Ural Mountains, on Mt. Zarod, Sikhote-Alin Mountains, Primorskiy Kray, Russia. Link to MinDat.org Location Data. | ||
| Name Origin: |
For the Akhtensk deposit, Russia, where it was first noted. | ||
| Synonym: |
ICSD 76430 | ||
| PDF 30-820 | |||
Akhtenskite Image | |||
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Images:
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Akhtenskite Crystallography |
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| Axial Ratios: |
a:c = 1:1.57192 | ||
| Cell Dimensions: |
a = 2.85, c = 4.48, Z = 1; V = 31.51 Den(Calc)= 4.58 | ||
| Crystal System: |
Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc | ||
Physical Properties of Akhtenskite |
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| Cleavage: |
[???] Good | ||
| Color: |
Gray, Black. | ||
| Density: |
4 | ||
| Diaphaniety: |
Opaque | ||
| Streak: |
black | ||
Optical Properties of Akhtenskite |
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| Optical Data: |
NCalc= 2.8 - from Gladstone-Dale relationship (KC = 0.394) where Ncalc=Dcalc*KC+1 NCalc= 2.58 - from Gladstone-Dale relationship (KC = 0.394) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Akhtenskite |
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| Electron Density: |
relectron=4.32 gm/cc |
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| Fermion Index |
Fermion Index = 0.00017 Boson Index = 0.99983 |
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| Photoelectric: |
PEAkhtenskite = 16.61 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Akhtenskite is Not Radioactive |
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Akhtenskite Classification |
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| Dana Class: |
4.4.10.1 (4)Simple Oxides | ||
| (4.4)with a cation charge of 4+ (A++++ O2) | |||
| (4.4.10)Dana Group | |||
| Strunz Class: |
IV/D.10-15 IV - Oxides | ||
| IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds) | |||
| IV/D.10 - Ramsdellite - Vernadite series | |||
Other Akhtenskite Information |
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.75,p931-937,1990) | ||
| See Also: |
Links to other databases for Akhtenskite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Akhtenskite using: Visit our Advertisers for Akhtenskite : Translate Akhtenskite Mineral Data : Ask about Akhtenskite here : Print or Cut-and-Paste your Akhtenskite Specimen Label here :
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