Solongoite Mineral Data
General Solongoite Information
Chemical Formula:
Ca2B3O4(OH)4Cl
Composition:
Molecular Weight = 280.07 gm
Calcium 28.62 % Ca 40.05 % CaO
Boron 11.58 % B 37.29 % B2 O3
Hydrogen 1.44 % H 12.87 % H2 O
Chlorine 12.66 % Cl 12.66 % Cl
- %
Cl -2.86 % -O=Cl2
Oxygen 45.70 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Ca2 B3 O4 (OH)4 Cl
Environment:
Drillhole into a contact metamorphic boron deposit at a depth of 400 m.
IMA Status:
Approved IMA 1974
Locality:
Solongo boron deposit, Buryatia, Russia. Link to MinDat.org Location Data.
Name Origin:
Named for the Solongo (Buryat for rainbow, for the variety of boron minerals contained) deposit, Russia, from which it was first noted.
Name Pronunciation:
Solongoite + Pronunciation
Solongoite Crystallography
Axial Ratios:
a:b:c =1.0922:1:1.7272
Cell Dimensions:
a = 7.93, b = 7.26, c = 12.54, Z = 4; beta = 94° V = 720.19 Den(Calc)= 2.58
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21 /c
X Ray Diffraction:
By Intensity(I/Io ): 2.196(1), 1.734(0.9), 7.84(0.9),
Physical Properties of Solongoite
Color:
Colorless.
Density:
2.514
Diaphaneity:
Transparent
Hardness:
3.5 - Copper Penny
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Solongoite
Gladstone-Dale:
CI meas = 0.163 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = 0.185 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2022,KPDmeas = 0.2075,KC = 0.248 Ncalc = 1.62 - 1.64
Optical Data:
Biaxial (+), a=1.51, b=1.51, g=1.545, bire=0.0350
Calculated Properties of Solongoite
Electron Density:
Bulk Density (Electron Density)=2.51 gm/cc note: Specific Gravity of Solongoite =2.51 gm/cc.
Fermion Index:
Fermion Index = 0.02 Boson Index = 0.98
Photoelectric:
PESolongoite = 4.48 barns/electronU=PESolongoite x r Electron Density= 11.25 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Solongoite is Not Radioactive
Solongoite Classification
Dana Class:
25.03.02.01 (25) Anhydrous Borates Containing Hydroxyl or Halogen
(25.03) Dana Type
(25.03.02) Dana Group
25.03.02.01 Solongoite Ca2B3O4(OH)4Cl P 21 /c 2/m
Strunz Class:
06.CA.40 06 - BORATES
06.C - Triborates
06.CA -Neso-triborates
06.CA.40 Solongoite Ca2B3O4(OH)4Cl P 21 /c 2/m
Other Solongoite 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 Solongoite :
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
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Print or Cut-and-Paste your Solongoite Specimen Label here :
Solongoite
Ca2B3O4(OH)4Cl
Dana No: 25.03.02.01 Strunz No: 06.CA.40
Locality:
Notes:
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