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 % B₂O₃

Hydrogen 1.44 % H 12.87 % H₂O

Chlorine 12.66 % Cl 12.66 % Cl

- % Cl -2.86 % -O=Cl₂

Oxygen 45.70 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₂B₃O₄(OH)₄Cl

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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:

PE_Solongoite= 4.48 barns/electron
U=PE_Solongoite x rElectron 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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