Sakhaite Mineral Data
General Sakhaite Information
Chemical Formula:
Ca3Mg(BO3)2(CO3)•0.36(H2O)
Composition:
Molecular Weight = 328.65 gm
Calcium 36.58 % Ca 51.19 % CaO
Magnesium 7.40 % Mg 12.26 % MgO
Boron 6.58 % B 21.18 % B2 O3
Hydrogen 0.22 % H 1.97 % H2 O
Carbon 3.65 % C 13.39 % CO2
Oxygen 45.57 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Ca3 Mg(BO3 )2 (CO3 )•0.36(H2 O)
Environment:
In a skarn.
IMA Status:
Approved IMA 1966
Locality:
Solongo, Transbaikalia, Russia. Link to MinDat.org Location Data.
Name Origin:
Named for the locality, Sakha being the name for Siberia in the Yakut language.
Name Pronunciation:
Sakhaite
Synonym:
ICSD 20203
PDF 19-1112
Sakhaite Image
Images:
Sakhaite
Comments: Dark gray octahedron of sakhaite embedded in gray calcite.
Location: Titovskoe, Sakha (Yakutia) Republic, Russia.
Scale: See Image.
© Rruff Database
Sakhaite Crystallography
Cell Dimensions:
a = 14.685, Z = 16; V = 3,166.81 Den(Calc)= 2.76
Crystal System:
Isometric - Gyroidal H-M Symbol (4 3 2) Space Group: F 41 32
X Ray Diffraction:
By Intensity(I/Io ): 2.58(1), 2.108(0.56), 5.16(0.22),
Physical Properties of Sakhaite
Cleavage:
None
Color:
Colorless, Gray, Gray white.
Density:
2.78 - 2.83, Average = 2.8
Diaphaneity:
Transparent to Translucent
Habit:
Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Habit:
Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:
5 - Apatite
Luster:
Vitreous - Greasy
Streak:
white
Optical Properties of Sakhaite
Gladstone-Dale:
CI meas = -0.079 (Fair) - where the CI = (1-KPDmeas /KC ) CI calc = -0.096 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.233,KPDmeas = 0.2292,KC = 0.2125 Ncalc = 1.59 - 1.6
Optical Data:
Isotropic, n=1.638-1.648.
Calculated Properties of Sakhaite
Electron Density:
Bulk Density (Electron Density)=2.79 gm/cc note: Specific Gravity of Sakhaite =2.81 gm/cc.
Fermion Index:
Fermion Index = 0.02 Boson Index = 0.98
Photoelectric:
PESakhaite = 4.78 barns/electronU=PESakhaite x r Electron Density= 13.35 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Sakhaite is Not Radioactive
Sakhaite Classification
Dana Class:
27.01.04.01 (27) Compound Borates
(27.01) Dana Type
(27.01.04) Dana Group
27.01.04.01 Sakhaite Ca3Mg(BO3)2(CO3)•0.36(H2O) F 41 32 4 3 2
Strunz Class:
06.AB.65 06 - BORATES
06.A - Monoborates
06.AB -BO3, with additional anions; 1(D) + OH, etc.
06.AB.65 Sakhaite Ca3Mg(BO3)2(CO3)•0.36(H2O) F 41 32 4 3 2
Other Sakhaite Information
References:
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Sakhaite :
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 Sakhaite Specimen Label here :
Sakhaite
Ca3Mg(BO3)2(CO3)•0.36(H2O)
Dana No: 27.01.04.01 Strunz No: 06.AB.65
Locality:
Notes:
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