General Berborite Information Chemical Formula: |
Be2(BO3)(OH,F)•(H2O) |
Composition: |
Molecular Weight = 112.35 gm |
|
Beryllium 16.04 % Be 44.52 % BeO |
|
Boron 9.62 % B 30.98 % B2O3 |
|
Hydrogen 2.47 % H 22.05 % H2O |
|
Oxygen 67.64 % O |
|
Fluorine 4.23 % F 4.23 % F |
|
- %
F -1.78 % -O=F2 |
|
______ ______ |
|
100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Be2(BO3)(OH)0.75F0.25•(H2O) |
Environment: |
Serpentinized dolostone associated with W-Sr-B-Be-bearing skarns |
IMA Status: |
Approved IMA 1967 |
Locality: |
Luppikko deposit, PitkĻaranta district, Lake Ladoga, Karelia, Russia. Link to MinDat.org Location Data. |
Name Origin: |
Named for the BERyllium and BORate in the composition. |
Name Pronunciation: |
Berborite + Pronunciation |
| | Berborite Image
Images:
|
|
Berborite Crystallography Axial Ratios: |
a:c = 1:2.39972 |
Cell Dimensions: |
a = 4.433, c = 10.638, Z = 2; V = 181.04 Den(Calc)= 2.06 |
Crystal System: |
Hexagonal - PyramidalH-M Symbol (6) Space Group: P 63 |
X Ray Diffraction: |
By Intensity(I/Io): 2.656(1), 3.11(1), 5.3(1), |
Crystal Structure:
|
Mouse
|
| Physical Properties of Berborite Cleavage: |
{0001} Perfect |
Color: |
Colorless. |
Density: |
2.2 |
Diaphaneity: |
Transparent |
Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
Hardness: |
3 - Calcite |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
| Optical Properties of Berborite Gladstone-Dale: |
CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2585,KPDmeas= 0.242,KC= 0.2504 Ncalc = 1.52 - 1.55 Optical Data: |
Uniaxial (-), e=1.485, w=1.58, bire=0.0950. |
| Calculated Properties of Berborite Electron Density: |
Bulk Density (Electron Density)=2.05 gm/cc |
note: Specific Gravity of Berborite =2.06 gm/cc. Fermion Index: |
Fermion Index = 0.17 |
Boson Index = 0.83 Photoelectric: |
PEBerborite = 0.34 barns/electron |
U=PEBerborite x rElectron Density= 0.70 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Berborite is Not Radioactive | Berborite Classification Dana Class: |
26.01.01.01 (26)Hydrated Borates Containing Hydroxyl or Halogen |
|
(26.01)Dana Type |
|
(26.01.01)Dana Group |
|
Strunz Class: |
06.AB.10 06 - BORATES |
|
06.A - Monoborates |
|
06.AB -BO3, with additional anions; 1(D) + OH, etc. |
|
| Other Berborite Information References: |
NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Berborite : |
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 Search for Berborite using: Visit our Advertisers for Berborite : A Bijoux Google Search for BerboriteAdam's Minerals Google Search for Berborite Cape Minerals Google Search for Berborite Dakota Matrix Minerals Google Search for Berborite Excalibur Mineral Corp. Google Search for Berborite Exceptional Minerals Google Search for Berborite John Betts Fine Minerals Search for Berborite McDougall Minerals Google Search for Berborite Mineral News Website Link Rock and Mineral Shows Google Search for Berborite Weinrich Minerals, Inc. Google Search for Berborite Ask about Berborite here : Print or Cut-and-Paste your Berborite Specimen Label here :
| |
|
| |