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Ushkovite Mineral Data

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General Ushkovite Information

Help on Chemical  Formula: Chemical Formula: MgFe+++2(PO4)2(OH)2•8(H2O)
Help on Composition: Composition: Molecular Weight = 504.08 gm
   Magnesium    4.82 %  Mg    8.00 % MgO
   Iron        22.16 %  Fe   31.68 % Fe2O3
   Phosphorus  12.29 %  P    28.16 % P2O5
   Hydrogen     3.60 %  H    32.17 % H2O
   Oxygen      57.13 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: MgFe3+2(PO4)2(OH)2•8(H2O)
Help on Environment: Environment: In granite pegmatites, as an alteration product of triplite formed by weathering.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Southern shore of Lake Bolshoy Tatkul, Ilmen Mountains, Southern Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Sergei L�vovich Ushkov (1880-1951), Russian naturalist, student of the Ilmen National Forest, Russia.
Help on Name Pronunciation: Name Pronunciation: Ushkovite + Pronunciation Say USHKOVITE
 

Ushkovite Image

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  Ushkovite   Roscherite

Comments: Translucent ushkovite microcrystals with orange roscherite on feldspar.
Location: Galileia, Minas Gerais, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ushkovite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4859:1:0.6672
Help on Cell Dimensions: Cell Dimensions: a = 5.2, b = 10.7, c = 7.14, Z = 1; alpha = 108.6°, beta = 106.933°, gamma = 72.717° V = 343.93 Den(Calc)= 2.43
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.86(1), 3.2(0.8), 6.57(0.8),
 

Physical Properties of Ushkovite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Brown, Light yellow, Orange.
Help on Density: Density: 2.38
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Ushkovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.043 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.047 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2637,KPDmeas= 0.2648,KC= 0.2767
Ncalc = 1.66
Help on Optical Data: Optical Data: Biaxial (-), a=1.584, b=1.637, g=1.67, bire=0.0860, 2V(Calc)=74, 2V(Meas)=50.
 

Calculated Properties of Ushkovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.42 gm/cc
note: Specific Gravity of Ushkovite =2.38 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0097988064
Boson Index = 0.9902011936
Help on Photoelectric: Photoelectric: PEUshkovite = 7.15 barns/electron
U=PEUshkovite x rElectron Density= 17.28 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ushkovite is Not Radioactive
 

Ushkovite Classification

Help on  Dana Class: Dana Class: 42.11.10.04 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.10)Laueite Group
 
42.11.10.01 Laueite MnFe2(PO4)2(OH)2•8(H2O) P1 1
 
42.11.10.02 Stewartite MnFe2(PO4)2(OH)2•8(H2O) P1 1
 
42.11.10.03 Pseudolaueite MnFe2(PO4)2(OH)2•7-8(H2O) P 21/a 2/m
 
42.11.10.04 Ushkovite MgFe2(PO4)2(OH)2•8(H2O) P1 1
 
42.11.10.05 Ferrolaueite! FeFe2(PO4)2(OH)2•8(H2O) Tri
Help on  Strunz Class: Strunz Class: 08.DC.30 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.30 Gordonite MgAl2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Ferrolaueite! FeFe2(PO4)2(OH)2•8(H2O) Tri
 
08.DC.30 Mangangordonite (Mn,Fe,Mg)Al2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Laueite MnFe2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Sigloite FeAl2(PO4)2(OH)3•5(H2O) P1 1
 
08.DC.30 Pseudolaueite MnFe2(PO4)2(OH)2•7-8(H2O) P 21/a 2/m
 
08.DC.30 Paravauxite FeAl2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Stewartite MnFe2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Ushkovite MgFe2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Kastningite! (Mn,Fe,Mg)Al2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Maghrebite! MgAl2(AsO4)2(OH)2•8H2O P1 1
 

Other Ushkovite 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 Ushkovite :
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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Print or Cut-and-Paste your Ushkovite Specimen Label here :

Ushkovite

MgFe+++2(PO4)2(OH)2•8(H2O)
Dana No: 42.11.10.04 Strunz No: 08.DC.30
Locality:

 

Notes:

 

 
   
 


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