|
|
Buryatite Mineral Data
|
|
|
General Buryatite Information
|
Chemical Formula: |
Ca3(Si,Fe+++,Al)[SO4][B(OH)4](OH,O)6•12(H2O) |
Composition: |
Molecular Weight = 730.42 gm |
|
Calcium 16.46 % Ca 23.03 % CaO |
|
Aluminum 0.37 % Al 0.70 % Al2O3 |
|
Iron 1.53 % Fe 2.19 % Fe2O3 |
|
Silicon 2.31 % Si 4.94 % SiO2 |
|
Boron 1.48 % B 4.77 % B2O3 |
|
Hydrogen 5.34 % H 47.73 % H2O |
|
Sulfur 4.39 % S 10.96 % SO3 |
|
Oxygen 68.12 % O |
|
______ ______ |
|
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:
|
|
Buryatite
Comments: Vitreous colorless buryatite on matrix.
Location: Solongo B deposit, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia.
Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag |
|
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 Pyramidal H-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 |
|
(31.10)miscellaneous |
|
(31.10.02)Dana Group |
|
31.10.02.01 Ettringite Ca6Al2(SO4)3(OH)12•26(H2O) P 63/mmc 6/m 2/m 2/m |
|
31.10.02.02 Bentorite Ca6(Cr,Al)2(SO4)3(OH)12•26(H2O) P 63/mmc 6/m 2/m 2/m |
|
31.10.02.03 Buryatite! Ca3(Si,Fe,Al)[SO4][B(OH)4](OH,O)6•12(H2O) P 31c 3m |
Strunz Class: |
07.DG.15 07 - SULFATES (SELENATES, TELLURATES) |
|
07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
|
07.DG -With large and medium sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3 |
|
07.DG.15 Bentorite Ca6(Cr,Al)2(SO4)3(OH)12•26(H2O) P 63/mmc 6/m 2/m 2/m |
|
07.DG.15 Charlesite Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O) P 31c 3m |
|
07.DG.15 Ettringite Ca6Al2(SO4)3(OH)12•26(H2O) P 63/mmc 6/m 2/m 2/m |
|
07.DG.15 Jouravskite Ca3Mn(SO4,CO3)2(OH)6•12(H2O) P 63/m 6/m |
|
07.DG.15 Sturmanite Ca6(Fe,Al,Mn)2(SO4)2[B(OH)4](OH)12•25(H2O) P 31c 3m |
|
07.DG.15 Thaumasite Ca3Si(CO3)(SO4)(OH)6•12(H2O) P 63/m 6/m |
|
07.DG.15 Buryatite! Ca3(Si,Fe,Al)[SO4][B(OH)4](OH,O)6•12(H2O) P 31c 3m |
|
07.DG.15 Carraraite! Ca3Ge(OH)6(SO4)(CO3)•12H2O P 63/m, or P 63 Hex |
|
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:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Buryatite :
Ask about Buryatite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espa�ol
Print or Cut-and-Paste your Buryatite Specimen Label here :
Buryatite
Ca3(Si,Fe+++,Al)[SO4][B(OH)4](OH,O)6•12(H2O)
Dana No: 31.10.02.03 Strunz No: 07.DG.15
Locality:
Notes:
|
|
|
|
|
|
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.