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Struvite-(K) Mineral Data

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General Struvite-(K) Information

Help on Chemical  Formula: Chemical Formula: KMg(PO4)•6(H2O)
Help on Composition: Composition: Molecular Weight = 266.47 gm
   Potassium   14.67 %  K    17.68 % K2O
   Magnesium    9.12 %  Mg   15.13 % MgO
   Phosphorus  11.62 %  P    26.63 % P2O5
   Hydrogen     4.54 %  H    40.56 % H2O
   Oxygen      60.04 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KMg(PO4)•6(H2O)
Help on Environment: Environment: Found in a dolomitic rock of Triassic age with small cavities, which contain mainly dolomite crystals. Schertelite-struvite group
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Lengenbach, Binntal, Valais, Switzerland Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the K-analogue of struvite
Help on Name Pronunciation: Name Pronunciation: Struvite-(K) Say STRUVITE-(K)
Help on Synonym: Synonym: IMA2003-048

Struvite-(K) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.118:1:1.8053
Help on Cell Dimensions: Cell Dimensions: a = 6.903, b = 6.174, c = 11.146, Z = 2; V = 475.03 Den(Calc)= 1.86
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: P mn21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.26(1), 3.27(0.9), 4.14(0.8),2.65(0.7), 1.954(0.5), 2.699(0.5), 2.905(0.5),

Physical Properties of Struvite-(K)

Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Struvite-(K)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2642,KC= 0.2516
Ncalc = 1.47
Help on Optical Data: Optical Data: Biaxial (+), a=1.49, b=1.493,

Calculated Properties of Struvite-(K)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.93 gm/cc
note: Specific Gravity of Struvite-(K) =1.86 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0094338489
Boson Index = 0.9905661511
Help on Photoelectric: Photoelectric: PEStruvite-(K) = 2.27 barns/electron
U=PEStruvite-(K) x relectron= 4.38 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 219.29 (Gamma Ray American Petroleum Institute Units)
Concentration of Struvite-(K) per GRapi unit = 0.46 (%)

Estimated Radioactivity from Struvite-(K) - barely detectable


Struvite-(K) Classification

Help on  Dana Class: Dana Class: (40)Hydrated Phosphates, etc
  (40.01)where A++ B++ (XO4) � x(H2O)
  (40.01.01)Struvite Group Struvite (NH4)MgPO4•6(H2O) P mn21 mm2 Struvite-(K)! KMg(PO4)•6(H2O) P mn21 mm2 Hazenite KNaMg2(PO4)2•14H2O Pmnb 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.CH.40 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CH -With large and medium-sized cations, RO4:H2O < 1:1
08.CH.40 Struvite (NH4)MgPO4•6(H2O) P mn21 mm2
08.CH.40 Struvite-(K)! KMg(PO4)•6(H2O) P mn21 mm2
08.CH.40 Hazenite KNaMg2(PO4)2•14H2O Pmnb 2/m 2/m 2/m

Other Struvite-(K) Information

Help on References: References: NAME( AmMin, 94:403) PHYS. PROP.(AmMin, 94:403) OPTIC PROP.(AmMin, 94:403)
Help on See Also: See Also: Links to other databases for Struvite-(K) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 08.CH.40





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