Fabianite Mineral Data

Fabianite Mineral Data
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General Fabianite Information

Help on Chemical Formula: Chemical Formula: CaB3O5(OH)
Help on Composition: Composition: Molecular Weight = 169.51 gm
   Calcium   23.64 %  Ca   33.08 % CaO
   Boron     19.13 %  B    61.60 % B2O3
   Hydrogen   0.59 %  H     5.31 % H2O
   Oxygen    56.63 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaB3O5(OH)
Help on Environment: Environment: Marine evaporite deposit.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Drill core at Rehden, near Diepholz, Lower Saxony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Hans-Joachim Fabian, German geologist.
Help on Name Pronunciation: Name Pronunciation: Fabianite + Pronunciation Say FABIANITE
Help on Synonym: Synonym: ICSD 14254
  PDF 15-631
 

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Fabianite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.6286:1:0.6068
Help on Cell Dimensions: Cell Dimensions: a = 6.593, b = 10.488, c = 6.365, Z = 4; beta = 113.38° V = 403.99 Den(Calc)= 2.79
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): 3.963(1), 3.268(0.93), 5.244(0.83),
Click Here for Large Fabianite Structure Window Crystal Structure:

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Konnert J A , Clark J R , Christ C L , Zeitschrift fur Kristallographie , 132 (1970) p.241-254, Crystal structure of fabianite, CaB3O5(OH), and comparison with the, structure of its syntheic dimorph, Locality: salt deposits near Diepholz, Germany

 

Physical Properties of Fabianite

Help on Cleavage: Cleavage: {011} Indistinct
Help on Color: Color: Colorless.
Help on Density: Density: 2.77
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luminescence: Luminescence: Fluorescent, Short UV=brownish yellow, Long UV=brownish yellow.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Fabianite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.037 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.03 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2265,KPDmeas= 0.2282,KC= 0.22
Ncalc = 1.61
Help on Optical Data: Optical Data: Biaxial (-), a=1.6085, b=1.6375, g=1.65, bire=0.0415
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Fabianite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.77 gm/cc
note: Specific Gravity of Fabianite =2.79 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEFabianite = 3.14 barns/electron
U=PEFabianite x rElectron Density= 8.69 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fabianite is Not Radioactive
 

Fabianite Classification
Help on Dana Class: Dana Class: 25.03.03.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.03)Dana Type
  (25.03.03)Dana Group
 
25.03.03.01 Fabianite CaB3O5(OH) P 21/a 2/m
Help on Strunz Class: Strunz Class: 06.FC.20 06 - BORATES
  06.F - Hexaborates
  06.FC -Phyllo-hexaborates
 
06.FC.20 Fabianite CaB3O5(OH) P 21/a 2/m
 

Other Fabianite Information
Help on References: References: NAME( AntBidBlaNic5) 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 Fabianite :
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 Fabianite Specimen Label here :

Fabianite

CaB3O5(OH)
Dana No: 25.03.03.01 Strunz No: 06.FC.20
Locality:

 

Notes: