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Vantasselite Mineral Data

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General Vantasselite Information

Help on Chemical  Formula: Chemical Formula: Al4(PO4)3(OH)3•9(H2O)
Help on Composition: Composition: Molecular Weight = 606.00 gm
   Aluminum    17.81 %  Al   33.65 % Al2O3
   Phosphorus  15.33 %  P    35.13 % P2O5
   Hydrogen     3.49 %  H    31.21 % H2O
   Oxygen      63.36 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al4(PO4)3(OH)3•9(H2O)
Help on Environment: Environment: On the dumps of a quartzite quarry.
Help on IMA Status: IMA Status: Approved IMA 1987
Help on Locality: Locality: Stavelot massif, Bihain, Belgium. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Rene Van Tassel (1916-), mineralogist of phosphate and sulfate minerals.
Help on Name Pronunciation: Name Pronunciation: Vantasselite + Pronunciation Say VANTASSELITE

Vantasselite Image

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Comments: Rosette of pearly platy vantasselite crystals.
Location: Bihain, Luxembourg, Belgium. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Vantasselite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6364:1:1.2316
Help on Cell Dimensions: Cell Dimensions: a = 10.528, b = 16.541, c = 20.373, Z = 8; V = 3,547.83 Den(Calc)= 2.27
Help on Crystal System: Crystal System: Orthorhombic Space Group: Pma2,P 21am,Pmam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.22(1), 2.892(0.5), 3.395(0.4),

Physical Properties of Vantasselite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Pearl white.
Help on Density: Density: 2.3
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Rosette - Bundled tabular aggregates resembling rose flower petals.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: white

Optical Properties of Vantasselite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2422,KPDmeas= 0.239,KC= 0.2401
Ncalc = 1.54 - 1.55
Help on Optical Data: Optical Data: Biaxial (-), a=1.511-1.5111, b=1.56, g=1.578, bire=0.0669-0.0670, 2V(Calc)=60, 2V(Meas)=61.

Calculated Properties of Vantasselite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.35 gm/cc
note: Specific Gravity of Vantasselite =2.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0003093864
Boson Index = 0.9996906136
Help on Photoelectric: Photoelectric: PEVantasselite = 1.33 barns/electron
U=PEVantasselite x rElectron Density= 3.12 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vantasselite is Not Radioactive

Vantasselite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.12)with miscellaneous formulae
  (42.12.01)Dana Group Vantasselite Al4(PO4)3(OH)3•9(H2O) Pma2,P 21am,Pmam Ortho
Help on  Strunz Class: Strunz Class: 08.DC.37 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
08.DC.37 Vantasselite Al4(PO4)3(OH)3•9(H2O) Pma2,P 21am,Pmam Ortho

Other Vantasselite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) OPTIC PROP.(Bull.Miner.,Vol.107-111,1984-1988)
Help on See Also: See Also: Links to other databases for Vantasselite :
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: 08.DC.37





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