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Metaschoderite Mineral Data

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General Metaschoderite Information

Help on Chemical  Formula: Chemical Formula: Al2(PO4)(VO4)•6(H2O)
Help on Composition: Composition: Molecular Weight = 371.97 gm
   Aluminum    14.51 %  Al   27.41 % Al2O3
   Vanadium    13.70 %  V    24.45 % V2O5
   Phosphorus   8.33 %  P    19.08 % P2O5
   Hydrogen     3.25 %  H    29.06 % H2O
   Oxygen      60.22 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al2(PO4)(VO4)•6(H2O)
Help on Environment: Environment: Dehydration product of schoderite.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Van-Nav-Sand claim group, Fish Creek Range, 48 km south of Eureka, Eureka Co., California and near Cockalorum Wash, Nye Co., Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the dehydration product of schoderite.
Help on Name Pronunciation: Name Pronunciation: Metaschoderite + Pronunciation Say METASCHODERITE

Metaschoderite Image

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Comments: Orange crystalline metaschoderite crust on shale.
Location: 25 miles east of Eureka, Fish Creek Range, Eureka County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Metaschoderite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7651:1:0.6174
Help on Cell Dimensions: Cell Dimensions: a = 11.4, b = 14.9, c = 9.2, Z = 4; beta = 101° V = 1,534.00 Den(Calc)= 1.61
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.5(1), 14.9(0.6), 11.1(0.4),

Physical Properties of Metaschoderite

Help on Color: Color: Yellow orange.
Help on Density: Density: 1.88
Help on Hardness: Hardness: 2 - Gypsum
Help on Streak: Streak: yellow

Optical Properties of Metaschoderite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.185 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.383 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3785,KPDmeas= 0.3241,KC= 0.2736
Ncalc = 1.44 - 1.51
Help on Optical Data: Optical Data: Biaxial (+), a=1.598, b=1.604, g=1.626, bire=0.0280, 2V(Calc)=56, 2V(Meas)=59.

Calculated Properties of Metaschoderite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.90 gm/cc
note: Specific Gravity of Metaschoderite =1.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0006363068
Boson Index = 0.9993636932
Help on Photoelectric: Photoelectric: PEMetaschoderite = 3.40 barns/electron
U=PEMetaschoderite x rElectron Density= 6.47 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Metaschoderite is Not Radioactive

Metaschoderite Classification

Help on  Dana Class: Dana Class: (43)Compound Phosphates, etc.
  (43.03)(Hydrated Normal Compound Anions)
  (43.03.01)Embreyite Group Schoderite Al2(PO4)(VO4)•8(H2O) P 21/m 2/m Metaschoderite Al2(PO4)(VO4)•6(H2O) P 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.CE.70 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CE -With only medium-sized cations, RO4:H2O � 1:2.5
08.CE.70 Metaschoderite Al2(PO4)(VO4)•6(H2O) P 2/m 2/m
08.CE.70 Schoderite Al2(PO4)(VO4)•8(H2O) P 21/m 2/m

Other Metaschoderite Information

Help on References: References: NAME( AntBidBlaNic4) 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 Metaschoderite :
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.CE.70





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