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Sakhaite Mineral Data

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General Sakhaite Information

Help on Chemical  Formula: Chemical Formula: Ca3Mg(BO3)2(CO3)•0.36(H2O)
Help on Composition: 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 % B2O3
   Hydrogen    0.22 %  H     1.97 % H2O
   Carbon      3.65 %  C    13.39 % CO2
   Oxygen     45.57 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Mg(BO3)2(CO3)•0.36(H2O)
Help on Environment: Environment: In a skarn.
Help on IMA Status: IMA Status: Approved IMA 1966
Help on Locality: Locality: Solongo, Transbaikalia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality, Sakha being the name for Siberia in the Yakut language.
Help on Name Pronunciation: Name Pronunciation: Sakhaite Say SAKHAITE
Help on Synonym: Synonym: ICSD 20203
  PDF 19-1112

Sakhaite Image

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Comments: Dark gray octahedron of sakhaite embedded in gray calcite.
Location: Titovskoe, Sakha (Yakutia) Republic, Russia. Scale: See Image.
© Rruff Database

Sakhaite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 14.685, Z = 16; V = 3,166.81 Den(Calc)= 2.76
Help on Crystal System: Crystal System: Isometric - Gyroidal H-M Symbol (4 3 2) Space Group: F 4132
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.58(1), 2.108(0.56), 5.16(0.22),

Physical Properties of Sakhaite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Gray, Gray white.
Help on Density: Density: 2.78 - 2.83, Average = 2.8
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white

Optical Properties of Sakhaite

Help on Gladstone-Dale: 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
Help on Optical Data: Optical Data: Isotropic, n=1.638-1.648.

Calculated Properties of Sakhaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.79 gm/cc
note: Specific Gravity of Sakhaite =2.81 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PESakhaite = 4.78 barns/electron
U=PESakhaite x rElectron Density= 13.35 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sakhaite is Not Radioactive

Sakhaite Classification

Help on  Dana Class: Dana Class: (27)Compound Borates
  (27.01)Dana Type
  (27.01.04)Dana Group Sakhaite Ca3Mg(BO3)2(CO3)•0.36(H2O) F 4132 4 3 2
Help on  Strunz Class: 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 4132 4 3 2

Other Sakhaite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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

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Dana No: Strunz No: 06.AB.65





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