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Fluoborite Mineral Data
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General Fluoborite Information
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 Chemical Formula: |
Mg3(BO3)(F,OH)3 |
| Composition: |
Molecular Weight = 186.61 gm |
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Magnesium 39.33 % Mg 65.22 % MgO |
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Boron 5.68 % B 18.28 % B2O3 |
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Hydrogen 0.38 % H 3.43 % H2O |
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Oxygen 31.29 % O |
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Fluorine 23.31 % F 23.31 % F |
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- %
F -9.82 % -O=F2 |
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______ ______ |
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100.00 % 100.43 % = TOTAL OXIDE |
| Empirical Formula: |
Mg3.02(BO3)0.98F2.29(OH)0.71 |
| Environment: |
A rare hydrothermal mineral in skarns developed in metamorphosed boron-rich magnesian rocks |
| IMA Status: |
Valid Species (Pre-IMA) 1926 |
| Locality: |
Huerta del Vinagre mine, Spain Link to MinDat.org Location Data. |
| Name Origin: |
Named for the essential chemical components, FLUOrine and BORon |
| Name Pronunciation: |
Fluoborite + Pronunciation  |
| Synonym: |
ICSD 4226 |
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PDF 19-468 |
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Fluoborite Image |
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Images:
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Fluoborite Crystallography
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| Axial Ratios: |
a:c = 1:0.34905 |
| Cell Dimensions: |
a = 8.924, c = 3.115, Z = 2; V = 214.84 Den(Calc)= 2.88 |
| Crystal System: |
Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 63/m |
| X Ray Diffraction: |
By Intensity(I/Io): 4.41(1), 2.41(0.95), 2.12(0.9), |
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Physical Properties of Fluoborite
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| Cleavage: |
{0001} Indistinct |
| Color: |
Colorless, Violet, White. |
| Density: |
2.89 |
| Diaphaneity: |
Transparent |
| Habit: |
Acicular - Occurs as needle-like crystals. |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Habit: |
Stellate - Occurs as spherical, radial aggregates radiating from a "star" like point. |
| Hardness: |
3.5 - Copper Penny |
| Luminescence: |
Fluorescent, Short UV=yellow cream. |
| Luster: |
Vitreous - Silky |
| Magnetism: |
Nonmagnetic |
| Streak: |
white |
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Optical Properties of Fluoborite
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| Optical Data: |
Uniaxial (-), e=1.534, w=1.57, bire=0.0360. |
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Calculated Properties of Fluoborite
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| Electron Density: |
Bulk Density (Electron Density)=2.83 gm/cc
note: Specific Gravity of Fluoborite =2.88 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEFluoborite = 1.06 barns/electron
U=PEFluoborite x rElectron Density= 2.99 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fluoborite is Not Radioactive |
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Fluoborite Classification
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| Dana Class: |
25.01.02.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen |
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(25.01)Dana Type |
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(25.01.02)Dana Group |
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25.01.02.01 Fluoborite Mg3(BO3)(F,OH)3 P 63/m 6/m |
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25.01.02.02 Hydroxylborite! Mg3(BO3)(OH,F)3 P 63/m 6/m |
| Strunz Class: |
06.AB.50 06 - BORATES |
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06.A - Monoborates |
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06.AB -BO3, with additional anions; 1(D) + OH, etc. |
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06.AB.50 Fluoborite Mg3(BO3)(F,OH)3 P 63/m 6/m |
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06.AB.50 Hydroxylborite! Mg3(BO3)(OH,F)3 P 63/m 6/m |
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Other Fluoborite Information
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| 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
17 - WWW-MINCRYST
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Print or Cut-and-Paste your Fluoborite Specimen Label here :
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Fluoborite
Mg3(BO3)(F,OH)3
Dana No: 25.01.02.01 Strunz No: 06.AB.50
Locality:
Notes:
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