Strontioginorite Mineral Data

Strontioginorite Mineral Data
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General Strontioginorite Information

Help on Chemical Formula: Chemical Formula: (Sr,Ca)2B14O23•8(H2O)
Help on Composition: Composition: Molecular Weight = 814.92 gm
   Strontium  16.13 %  Sr   19.07 % SrO
   Calcium     2.46 %  Ca    3.44 % CaO
   Boron      18.57 %  B    59.80 % B2O3
   Hydrogen    1.98 %  H    17.69 % H2O
   Oxygen     60.86 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sr1.5Ca0.5B14O23•8(H2O)
Help on Environment: Environment: Sedimentary borate deposits.
Help on IMA Status: IMA Status: Approved IMA 1959
Help on Locality: Locality: Reyershausen, near Gottingen, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition and relationship to ginorite.
Help on Name Pronunciation: Name Pronunciation: Strontioginorite Say STRONTIOGINORITE
Help on Synonym: Synonym: ICSD 15183
  PDF 13-137
  Volkovite
 

Strontioginorite Image

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Strontioginorite

Comments: Silky white strontioginorite with anhydrite.
Location: Kohnstein Quarry, Harz Mts, Thuringia, Germany. Scale: Sample Size 4 cm.
© Thomas Witzke / Abraxas-Verlag

Strontioginorite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8865:1:0.8854
Help on Cell Dimensions: Cell Dimensions: a = 12.817, b = 14.4576, c = 12.8008, Z = 4; beta = 101.327° V = 2,325.83 Den(Calc)= 2.33
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.25(1), 2.1(0.8), 5.4(0.6),
Click Here for Large Strontioginorite Structure Window Crystal Structure:

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Konnert J A , Clark J R , Christ C L , American Mineralogist , 55 (1970) p.1911-1931, Crystal structure of strontioginorite, (Sr,Ca)2B14O20(OH)6.5H2O

View Additional jPOWD Structure files for Strontioginorite
[1]
 

Physical Properties of Strontioginorite

Help on Cleavage: Cleavage: {010} Perfect, {001} Good
Help on Color: Color: Colorless.
Help on Density: Density: 2.25
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: white
 

Optical Properties of Strontioginorite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.069 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2308,KPDmeas= 0.239,KC= 0.2236
Ncalc = 1.5 - 1.52
Help on Optical Data: Optical Data: Biaxial (+), a=1.512, b=1.524, g=1.577, bire=0.0650, 2V(Calc)=54, 2V(Meas)=53.
 

Calculated Properties of Strontioginorite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Strontioginorite =2.33 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEStrontioginorite = 17.88 barns/electron
U=PEStrontioginorite x rElectron Density= 41.01 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Strontioginorite is Not Radioactive
 

Strontioginorite Classification
Help on Dana Class: Dana Class: 26.06.07.02 (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.06)Dana Type
  (26.06.07)Dana Group
 
26.06.07.01 Ginorite Ca2B14O23•8(H2O) P 21/c 2/m
 
26.06.07.02 Strontioginorite (Sr,Ca)2B14O23•8(H2O) P 21/a 2/m
Help on Strunz Class: Strunz Class: 06.FC.15 06 - BORATES
  06.F - Hexaborates
  06.FC -Phyllo-hexaborates
 
06.FC.15 Ginorite Ca2B14O23•8(H2O) P 21/c 2/m
 
06.FC.15 Strontioginorite (Sr,Ca)2B14O23•8(H2O) P 21/a 2/m
 

Other Strontioginorite Information
Help on References: References: 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 Strontioginorite :
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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Strontioginorite

(Sr,Ca)2B14O23•8(H2O)
Dana No: 26.06.07.02 Strunz No: 06.FC.15
Locality:

 

Notes: