Viseite Mineral Data


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General Viseite Information

Help on Chemical  Formula: Chemical Formula: Ca10Al24(SiO4)6(PO4)7O22F3·72(H2O) (?)
Help on Composition: Composition: Molecular Weight = 3,944.74 gm
   Calcium     10.16 %  Ca   14.22 % CaO
   Aluminum    15.73 %  Al   29.72 % Al2O3
   Silicon      4.27 %  Si    9.14 % SiO2
   Phosphorus   5.50 %  P    12.59 % P2O5
   Hydrogen     3.68 %  H    32.88 % H2O
   Oxygen      59.22 %  O
   Fluorine     1.44 %  F     1.44 % F
                 -   %  F    -0.61 % -O=F2
              ______        ______ 
              100.00 %       99.39 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca10Al23(SiO4)6(PO4)7O22F3·72(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1942
Help on Locality: Locality: Link to MinDat.org Location Data.
 

Viseite Image

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Viseite   Trolleite

Comments: Chalky white massive viseite with bluish trolleite.
Location: Champion Sillimanite Mine, near Laws, Mono County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Viseite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 13.65, Z = 1; V = 2,543.30 Den(Calc)= 2.58
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I a3d
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.92(1), 1.74(0.6), 3.46(0.5),
 

Physical Properties of Viseite

Help on Cleavage: Cleavage: None
Help on Color: Color: Bluish white, Yellowish white, Lemon white.
Help on Density: Density: 2.2
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Viseite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.165 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2054,KPDmeas= 0.2409,KC= 0.2459
Help on Optical Data: Optical Data: Isotropic, n=1.53.
 

Calculated Properties of Viseite

Help on Electron Density: Electron Density:

relectron=2.26 gm/cc
note: rViseite =2.20 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00242
Boson Index = 0.99758
Help on Photoelectric: Photoelectric:

PEViseite = 2.19 barns/electron
U=PEViseite x relectron= 4.96 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Viseite is Not Radioactive

 

Viseite Classification

Help on  Dana Class: Dana Class: 43.5.9.1 (43)Compound Phosphates, etc.
  (43.5)(Hydrated Compound Anions With Hydroxyl or Halogen)
  (43.5.9)Dana Group
 
43.5.9.1 Viseite Ca10Al24(SiO4)6(PO4)7O22F3·72(H2O)(?) I a3d 4/m 3 2/m
Help on  Strunz Class: Strunz Class: VIII/J.20-20 VIII - Silicates
  VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites
  VIII/J.20 - Perhamite - Viseite series
 
VIII/J.20-10 Perhamite Ca3Al7(SiO4)3(PO4)4(OH)3·16.5(H2O) P 6/mmm 6/m 2/m 2/m
 
VIII/J.20-20 Viseite Ca10Al24(SiO4)6(PO4)7O22F3·72(H2O)(?) I a3d 4/m 3 2/m
 
VIII/J.20-30 Tschortnerite! Ca4(Ca,Sr,K,Ba)3Cu3(OH)8[Si12Al12O48]·x(H2O),x>=20 F m3m 4/m 3 2/m
 

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

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Viseite

Ca10Al24(SiO4)6(PO4)7O22F3·72(H2O) (?)
Dana No: 43.5.9.1 Strunz No: VIII/J.20-20
Locality:

 

Notes:

 

 
   
 
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