Struvite-K Mineral Data

Struvite-K Mineral Data +

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General Struvite-K Information

Chemical Formula:

KMg(PO4)·6(H2O)

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

Empirical Formula:

KMg(PO₄)·6(H₂O)

Environment:

Schertelite-struvite group

IMA Status:

Proposed IMA 2003 (Dana # Added)

Locality:

Lengenbach, Binntal, Valais, Switzerland Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

Synonym:

IMA2003-048

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Struvite-K Crystallography

Axial Ratios:

a:b:c =1.1177:1:1.8065

Cell Dimensions:

a = 6.892, b = 6.166, c = 11.139, Z = 2; V = 473.36 Den(Calc)= 1.87

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P mn2₁

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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

Color:

Colorless.

Diaphaniety:

Transparent

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Struvite-K

Gladstone-Dale:

CI calc= -0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2628,KC= 0.2516

Optical Data:

Biaxial (+), a=1.49, b=1.493,

Calculated Properties of Struvite-K

Electron Density:

r_electron=1.94 gm/cc
note: r_Struvite-K=1.87 gm/cc.

Fermion Index

Fermion Index = 0.00943
Boson Index = 0.99057

Photoelectric:

PE_Struvite-K= 2.27 barns/electron
U=PE_Struvite-K x r_electron= 4.40 barns/cc.

Radioactivity:

GRapi = 219.29 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Struvite-K - barely detectable

Struvite-K Classification

Dana Class:

40.1.1.2 (40)Hydrated Phosphates, etc

(40.1)where A++ B++ (XO4) · x(H2O)

(40.1.1)Dana Group

40.1.1.1 Struvite (NH4)MgPO4·6(H2O) P mn2₁ mm2

40.1.1.2 Struvite-K ! KMg(PO4)·6(H2O) P mn2₁ mm2

Strunz Class:

VII/X.00-00 VII - Phosphates, Arsenates and Vanadates

VII/X - Unclassified Strunz Phosphates, Arsenates and Vanadates

VII/X.00 - Schertelite-struvite group

Other Struvite-K Information

See Also:

Links to other databases for Struvite-K :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Struvite-K Specimen Label here :

Struvite-K

KMg(PO4)·6(H2O)
Dana No: 40.1.1.2 Strunz No: VII/X.00-00
Locality:

Notes: