Mineralogy Database

Fluoborite Mineral Data

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General Fluoborite Information

Help on Chemical  Formula: Chemical Formula: Mg3(BO3)(F,OH)3
Help on Composition: Composition: Molecular Weight = 186.61 gm
   Magnesium  39.33 %  Mg   65.22 % MgO
   Boron       5.68 %  B    18.28 % B2O3
   Hydrogen    0.38 %  H     3.43 % H2O
   Oxygen     31.29 %  O
   Fluorine   23.31 %  F    23.31 % F
                -   %   F    -9.82 % -O=F2    
             ______        ______ 
             100.00 %      100.43 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg3.02(BO3)0.98F2.29(OH)0.71
Help on Environment: Environment: A rare hydrothermal mineral in skarns developed in metamorphosed boron-rich magnesian rocks
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1926
Help on Locality: Locality: Huerta del Vinagre mine, Spain Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the essential chemical components, FLUOrine and BORon
Help on Name Pronunciation: Name Pronunciation: Fluoborite + Pronunciation Say FLUOBORITE
Help on Synonym: Synonym: ICSD 4226
  PDF 19-468

Fluoborite Image

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Comments: Silky fibrous fluoborite with purple fluorite.
Location: Ludlaw, San Bernardino County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fluoborite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.34905
Help on Cell Dimensions: Cell Dimensions: a = 8.924, c = 3.115, Z = 2; V = 214.84 Den(Calc)= 2.88
Help on Crystal System: Crystal System: Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.41(1), 2.41(0.95), 2.12(0.9),

Physical Properties of Fluoborite

Help on Cleavage: Cleavage: {0001} Indistinct
Help on Color: Color: Colorless, Violet, White.
Help on Density: Density: 2.89
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Stellate - Occurs as spherical, radial aggregates radiating from a "star" like point.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luminescence: Luminescence: Fluorescent, Short UV=yellow cream.
Help on Luster: Luster: Vitreous - Silky
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white

Optical Properties of Fluoborite

Help on Optical Data: Optical Data: Uniaxial (-), e=1.534, w=1.57, bire=0.0360.

Calculated Properties of Fluoborite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.83 gm/cc
note: Specific Gravity of Fluoborite =2.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEFluoborite = 1.06 barns/electron
U=PEFluoborite x rElectron Density= 2.99 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fluoborite is Not Radioactive

Fluoborite Classification

Help on  Dana Class: Dana Class: (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.01)Dana Type
  (25.01.02)Dana Group Fluoborite Mg3(BO3)(F,OH)3 P 63/m 6/m Hydroxylborite! Mg3(BO3)(OH,F)3 P 63/m 6/m
Help on  Strunz Class: Strunz Class: 06.AB.50 06 - BORATES
  06.A - Monoborates
  06.AB -BO3, with additional anions; 1(D) + OH, etc.
06.AB.50 Fluoborite Mg3(BO3)(F,OH)3 P 63/m 6/m
06.AB.50 Hydroxylborite! Mg3(BO3)(OH,F)3 P 63/m 6/m

Other Fluoborite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Fluoborite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Palache)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - Scandinavian mineral gallery

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Dana No: Strunz No: 06.AB.50





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