Mineralogy Database

Metaborite Mineral Data

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General Metaborite Information

Help on Chemical  Formula: Chemical Formula: HBO2
Help on Composition: Composition: Molecular Weight = 43.82 gm
   Boron     24.67 %  B    79.44 % B2O3
   Hydrogen   2.30 %  H    20.56 % H2O
   Oxygen    73.03 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: HBO2
Help on Environment: Environment: Fne-grained halite in a salt dome.
Help on IMA Status: IMA Status: Approved IMA 1964
Help on Locality: Locality: Chelkar salt dome, Ak-sa?I Valley, Uralsk district, and at the Inder borate deposit, Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek meta, as a lesser hydrate than orthoboric acid.
Help on Name Pronunciation: Name Pronunciation: Metaborite + Pronunciation Say METABORITE
Help on Synonym: Synonym: ICSD 34639
  PDF 15-868

Metaborite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 8.89, Z = 24; V = 702.60 Den(Calc)= 2.49
Help on Crystal System: Crystal System: Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: P 43m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.442(1), 1.939(0.95), 3.627(0.5),

Physical Properties of Metaborite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Brownish, Brownish white, Colorless.
Help on Density: Density: 2.47
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Metaborite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.039 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2482,KPDmeas= 0.2502,KC= 0.2407
Ncalc = 1.59 - 1.6
Help on Optical Data: Optical Data: Isotropic, n=1.618.

Calculated Properties of Metaborite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.50 gm/cc
note: Specific Gravity of Metaborite =2.49 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEMetaborite = 0.34 barns/electron
U=PEMetaborite x rElectron Density= 0.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Metaborite is Not Radioactive

Metaborite Classification

Help on  Dana Class: Dana Class: (24)Borates - Anhydrous
  (24.05)with miscellaneous formulae
  (24.05.01)Dana Group Metaborite HBO2 P 43m 4 3m
Help on  Strunz Class: Strunz Class: 06.GD.10 06 - BORATES
  06.G - Heptaborates and other Megaborates
  06.GD -Mega-tektoborates
06.GD.10 Metaborite HBO2 P 43m 4 3m

Other Metaborite 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 Metaborite :
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: 06.GD.10





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