Strontioborite Mineral Data

Strontioborite Mineral Data
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General Strontioborite Information

Help on Chemical Formula: Chemical Formula: SrB8O11(OH)4
Help on Composition: Composition: Molecular Weight = 418.12 gm
   Strontium  20.96 %  Sr   24.78 % SrO
   Boron      20.68 %  B    66.60 % B2O3
   Hydrogen    0.96 %  H     8.62 % H2O
   Oxygen     57.40 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: SrB8O11(OH)4
Help on Environment: Environment: In rock salt.
Help on IMA Status: IMA Status: Approved IMA 1960
Help on Locality: Locality: Caspian region, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition.
Help on Name Pronunciation: Name Pronunciation: Strontioborite Say STRONTIOBORITE
Help on Synonym: Synonym: ICSD 4228
  PDF 18-1285
 

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Strontioborite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.1958:1:0.9184
Help on Cell Dimensions: Cell Dimensions: a = 9.83, b = 8.22, c = 7.55, Z = 2; beta = 107.766° V = 580.97 Den(Calc)= 2.39
Help on Crystal System: Crystal System: Monoclinic - SphenoidalH-M Symbol (2) Space Group: P 21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.2(1), 4.09(0.9), 3.29(0.8),
Click Here for Large Strontioborite Structure Window Crystal Structure:

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Brovkin A A , Zayakina N V , Brovkina V S , Soviet Physics Crystallography , 20 (1975) p.563-566, Crystal structure of strontioborite Sr[B8O11(OH)4]

 

Physical Properties of Strontioborite

Help on Color: Color: Colorless.
Help on Density: Density: 2.806
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Strontioborite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.111 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.043 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2174,KPDmeas= 0.1852,KC= 0.2084
Ncalc = 1.5 - 1.58
Help on Optical Data: Optical Data: Biaxial (+/-), a=1.47, b=1.51, g=1.579, bire=0.1090, 2V(Calc)=78, 2V(Meas)=85.
 

Calculated Properties of Strontioborite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.31 gm/cc
note: Specific Gravity of Strontioborite =2.39 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEStrontioborite = 23.17 barns/electron
U=PEStrontioborite x rElectron Density= 53.50 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Strontioborite is Not Radioactive
 

Strontioborite Classification
Help on Dana Class: Dana Class: 25.06.03.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.06)Dana Type
  (25.06.03)Dana Group
 
25.06.03.01 Strontioborite SrB8O11(OH)4 P 21 2
Help on Strunz Class: Strunz Class: 06.FC.10 06 - BORATES
  06.F - Hexaborates
  06.FC -Phyllo-hexaborates
 
06.FC.10 Strontioborite SrB8O11(OH)4 P 21 2
 

Other Strontioborite 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 Strontioborite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Strontioborite Specimen Label here :

Strontioborite

SrB8O11(OH)4
Dana No: 25.06.03.01 Strunz No: 06.FC.10
Locality:

 

Notes: