Aksaite Mineral Data

Aksaite Mineral Data
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General Aksaite Information

Help on Chemical Formula: Chemical Formula: MgB6O7(OH)6•2(H2O)
Help on Composition: Composition: Molecular Weight = 339.24 gm
   Magnesium   7.16 %  Mg   11.88 % MgO
   Boron      19.12 %  B    61.57 % B2O3
   Hydrogen    2.97 %  H    26.55 % H2O
   Oxygen     70.74 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(B6O7)(OH)6•2(H2O)
Help on Environment: Environment: In fine-grained halite in a salt dome.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Chelkar, Ak-Sai Valley, Uralsk district, Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Aksaite Say AKSAITE
Help on Synonym: Synonym: ICSD 15212
  PDF 15-654
 

Aksaite Image

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Aksaite

Comments: Gray-white massive aksaite fragment photographed through a capsule.
Location: Chelkar Salt dome, Ak-Say Valley, Kazakhstan. Scale: Not Given.
© Diederik Visser

Aksaite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5149:1:0.3073
Help on Cell Dimensions: Cell Dimensions: a = 12.54, b = 24.35, c = 7.484, Z = 8; V = 2,285.23 Den(Calc)= 1.97
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.4(1), 4.72(0.5), 6.1(0.5),
Click Here for Large Aksaite Structure Window Crystal Structure:

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Dal Negro A , Ungaretti L , Sabelli C , American Mineralogist , 56 (1971) p.1553-1566, The crystal structure of aksaite

 

Physical Properties of Aksaite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Colorless, Gray, Light gray.
Help on Density: Density: 1.99
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Streak: Streak: white
 

Optical Properties of Aksaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.254,KPDmeas= 0.2514,KC= 0.2464
Ncalc = 1.49
Help on Optical Data: Optical Data: Biaxial (-), a=1.472, b=1.503, g=1.526, bire=0.0540, 2V(Calc)=78, 2V(Meas)=80.
 

Calculated Properties of Aksaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.02 gm/cc
note: Specific Gravity of Aksaite =1.99 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEAksaite = 0.46 barns/electron
U=PEAksaite x rElectron Density= 0.93 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Aksaite is Not Radioactive
 

Aksaite Classification
Help on Dana Class: Dana Class: 26.06.04.01 (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.06)Dana Type
  (26.06.04)Dana Group
 
26.06.04.01 Aksaite MgB6O7(OH)6•2(H2O) P bca 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 06.FA.05 06 - BORATES
  06.F - Hexaborates
  06.FA -Neso-hexaborates
 
06.FA.05 Aksaite MgB6O7(OH)6•2(H2O) P bca 2/m 2/m 2/m
 

Other Aksaite Information
Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Aksaite :
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
15 - WWW-MINCRYST

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Ask about Aksaite here :
Ask-A-Mineralogist from the Mineralogical Society of America
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Print or Cut-and-Paste your Aksaite Specimen Label here :

Aksaite

MgB6O7(OH)6•2(H2O)
Dana No: 26.06.04.01 Strunz No: 06.FA.05
Locality:

 

Notes: