General Buryatite Information Chemical Formula: |
Ca3(Si,Fe+++,Al)[SO4][B(OH)4](OH,O)6•12(H2O) |
Composition: |
Molecular Weight = 730.42 gm |
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Calcium 16.46 % Ca 23.03 % CaO |
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Aluminum 0.37 % Al 0.70 % Al2O3 |
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Iron 1.53 % Fe 2.19 % Fe2O3 |
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Silicon 2.31 % Si 4.94 % SiO2 |
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Boron 1.48 % B 4.77 % B2O3 |
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Hydrogen 5.34 % H 47.73 % H2O |
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Sulfur 4.39 % S 10.96 % SO3 |
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Oxygen 68.12 % O |
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______ ______ |
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100.00 % 94.30 % = TOTAL OXIDE |
Empirical Formula: |
Ca3Si0.6Fe3+0.2Al0.1(SO4)B(OH)14.7O0.4•12(H2O) |
Environment: |
Found in a drill core of a kurchatovite-sakhaite ore in the Solongo deposit. Ettringite group |
IMA Status: |
Approved IMA 2000 (Dana # Added) |
Locality: |
Solongo boron deposit, Buryatiya, Ural Mts, Russia. Link to MinDat.org Location Data. |
Name Origin: |
Named for the locality |
Synonym: |
IMA2000-021 |
| | Buryatite Image
Images:
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Buryatite Crystallography Axial Ratios: |
a:c = 1:1.8842 |
Cell Dimensions: |
a = 11.14, c = 20.99, Z = 4; V = 2,255.87 Den(Calc)= 2.15 |
Crystal System: |
Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: P 31c |
X Ray Diffraction: |
By Intensity(I/Io): 2.596(1)(312), 2.121(0.9)(136), 3.04(0.8),9.7(0.8)(100), 1.498(0.7)(248), 1.833(0.6)(332), 2.374(0.6)(134), 2.736(0.6)(304), 3.85(0.6), |
| Physical Properties of Buryatite Cleavage: |
{100} Perfect |
Color: |
Light violet gray. |
Diaphaneity: |
Translucent |
Fracture: |
Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite). |
Habit: |
Disseminated - Occurs in small, distinct particles dispersed in matrix. |
Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
Habit: |
Platy - Sheet forms (e.g. micas). |
Hardness: |
2.5 - Finger Nail |
Luster: |
Vitreous - Dull |
Streak: |
white |
| Optical Properties of Buryatite Gladstone-Dale: |
CI calc= 0.052 (Good) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.2453,KC= 0.2589 Ncalc = 1.56 Optical Data: |
Uniaxial (+), w=1.523, e=1.532, bire=0.0090. |
| Calculated Properties of Buryatite Electron Density: |
Bulk Density (Electron Density)=2.26 gm/cc |
note: Specific Gravity of Buryatite =2.15 gm/cc. Fermion Index: |
Fermion Index = 0.0052332237 |
Boson Index = 0.9947667763 Photoelectric: |
PEBuryatite = 2.91 barns/electron |
U=PEBuryatite x rElectron Density= 6.56 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Buryatite is Not Radioactive | Buryatite Classification Dana Class: |
31.10.02.03 (31)Hydrated Sulfates Containing Hydroxyl or Halogen |
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(31.10)miscellaneous |
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(31.10.02)Dana Group |
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Strunz Class: |
07.DG.15 07 - SULFATES (SELENATES, TELLURATES) |
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07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
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07.DG -With large and medium sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3 |
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| Other Buryatite Information References: |
NAME( AmMin, Vol 87, p 1509) PHYS. PROP.(AmMin, Vol 87, p 1509) OPTIC PROP.(AmMin, Vol 87, p 1509) |
See Also: |
Links to other databases for Buryatite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Buryatite using: Visit our Advertisers for Buryatite : A Bijoux Google Search for BuryatiteAdam's Minerals Google Search for Buryatite Cape Minerals Google Search for Buryatite Dakota Matrix Minerals Google Search for Buryatite Excalibur Mineral Corp. Google Search for Buryatite Exceptional Minerals Google Search for Buryatite John Betts Fine Minerals Search for Buryatite McDougall Minerals Google Search for Buryatite Mineral News Website Link Rock and Mineral Shows Google Search for Buryatite Weinrich Minerals, Inc. Google Search for Buryatite Ask about Buryatite here : Print or Cut-and-Paste your Buryatite Specimen Label here :
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