Mineralogy Database

Akhtenskite Mineral Data

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General Akhtenskite Information

Help on Chemical  Formula: Chemical Formula: Mn++++O2
Help on Composition: Composition: Molecular Weight = 86.94 gm
   Manganese  63.19 %  Mn  100.00 % MnO2
   Oxygen     36.81 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn4+O2
Help on Environment: 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
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: 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.
Help on Name Origin: Name Origin: For the Akhtensk deposit, Russia, where it was first noted.
Help on Name Pronunciation: Name Pronunciation: Akhtenskite + Pronunciation Say AKHTENSKITE
Help on Synonym: Synonym: ICSD 76430
  PDF 30-820

Akhtenskite Image

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Comments: Dark gray grains of akhtenskite with brown superficial coating.
Location: Akhtenskoye Deposit, Chelyabinsk District, Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Physical Properties of Akhtenskite

Help on Color: Color: Gray, Black.

Optical Properties of Akhtenskite

Help on Optical Data: 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

Calculated Properties of Akhtenskite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.32 gm/cc
note: Specific Gravity of Akhtenskite =4.58 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001766733
Boson Index = 0.9998233267
Help on Photoelectric: Photoelectric: PEAkhtenskite = 16.61 barns/electron
U=PEAkhtenskite x rElectron Density= 71.73 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Akhtenskite is Not Radioactive

Akhtenskite Classification

Help on  Dana Class: Dana Class: (04)Simple Oxides
  (04.04)with a cation charge of 4+ (A++++ O2)
  (04.04.10)Dana Group Akhtenskite MnO2 P 63/mmc 6/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.DB.15b 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DB -With medium-sized cations; chains of edge-sharing octahedra
04.DB.15b Akhtenskite MnO2 P 63/mmc 6/m 2/m 2/m

Other Akhtenskite Information

Help on See Also: See Also: Links to other databases for Akhtenskite :
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

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Dana No: Strunz No: 04.DB.15b