Akhtenskite Mineral Data + Say AKHTENSKITE


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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 Synonym: Synonym: ICSD 76430
  PDF 30-820
 

Akhtenskite Image

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Akhtenskite

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

Akhtenskite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.57192
Help on Cell Dimensions: Cell Dimensions: a = 2.85, c = 4.48, Z = 1; V = 31.51 Den(Calc)= 4.58
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
 

Physical Properties of Akhtenskite

Help on Cleavage: Cleavage: [???] Good
Help on Color: Color: Gray, Black.
Help on Density: Density: 4
Help on Diaphaniety: Diaphaniety: Opaque
Help on Streak: Streak: 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:

relectron=4.32 gm/cc
note: rAkhtenskite =4.58 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00017
Boson Index = 0.99983
Help on Photoelectric: Photoelectric:

PEAkhtenskite = 16.61 barns/electron
U=PEAkhtenskite x relectron= 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: 4.4.10.1 (4)Simple Oxides
  (4.4)with a cation charge of 4+ (A++++ O2)
  (4.4.10)Dana Group
 
4.4.10.1 Akhtenskite MnO2 P 63/mmc 6/m 2/m 2/m
Help on  Strunz Class: 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
 
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
 

Other Akhtenskite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.75,p931-937,1990)
Help on See Also: 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

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Print or Cut-and-Paste your Akhtenskite Specimen Label here :

Akhtenskite

Mn++++O2
Dana No: 4.4.10.1 Strunz No: IV/D.10-15
Locality:

 

Notes:

 

 
   
 
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