Kastningite Mineral Data

General Kastningite Information

Chemical Formula: (Mn++,Fe++,Mg)Al2(PO4 )2(OH)2•8(H2O) Composition: Molecular Weight = 475.72 gm    Magnesium    0.26 %  Mg    0.42 % MgO    Manganese    7.51 %  Mn    9.69 % MnO    Aluminum    11.34 %  Al   21.43 % Al₂O₃    Iron         3.52 %  Fe    4.53 % FeO    Phosphorus  13.02 %  P    29.84 % P₂O₅    Hydrogen     3.81 %  H    34.08 % H₂O    Oxygen      60.54 %  O               ______        ______                100.00 %      100.00 % = TOTAL OXIDE Empirical Formula: Mn²⁺_0.65Fe²⁺_0.3Mg_0.05Al₂(PO₄)₂(OH)₂·8(H₂O) Environment: Found in the aplitic zone of a zoned P-bearing granitic pegmatite exploited for feldspar for the ceramics industry. An alteration product of primary phosphates. Dimorphic relationsh ip with mangangordonite, and the Al-do IMA Status: Approved IMA 1999 (Dana # Added) Locality: Silbergrube quarry, Waidhaus, Upper Palatinate (Oberpfälzer Wald), Bavaria, Germany. Link to MinDat.org Location Data. Name Origin: Named after Jürgen Kastning (b. 1932), from Reinbeck bei Hamburg, Germany, amateur mineralogist specializing in phosphate minerals, who discovered the mineral. Name Pronunciation: Kastningite + Pronunciation Synonym: ICSD 410793   IMA1997-033  

Kastningite Image

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Kastningite Crystallography

X Ray Diffraction: By Intensity(I/I_o): 9.917(1), 4.957(0.5), 6.541(0.36),3.001(0.3), 3.094(0.28), Crystal Structure:

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Adiwidjaja G , Friese K , Klaska K H , Schluter J , Zeitschrift für Kristallographie , 214 (1999) p.465-468, The crystal structure of kastningite (Mn,Fe,Mg)(H2O)4[Al2(OH)2(H2O)2(PO4)2]*2H2O -, a new hydroxyl aquated orthophosphate hydrate mineral, Locality: Waidhaus, Bavaria, Germany, Note: changed sign of Oh1(y)

 

Physical Properties of Kastningite

Color: White, Beige, Colorless.  

Optical Properties of Kastningite

Gladstone-Dale: CI meas= -0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.005 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2422,KPDmeas= 0.2443,KC= 0.2433
Ncalc = 1.57 - 1.58  

Calculated Properties of Kastningite

Electron Density: Bulk Density (Electron Density)=2.40 gm/cc
note: Specific Gravity of Kastningite =2.35 gm/cc.
Fermion Index: Fermion Index = 0.001298381
Boson Index = 0.998701619 Photoelectric: PE_Kastningite = 3.88 barns/electron
U=PE_Kastningite x rElectron Density= 9.29 barns/cc.
Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kastningite is Not Radioactive  

Kastningite Classification

Dana Class: 42.11.14.06 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen   (42.11)where (AB)4 (XO4)3 Zq · x(H2O)   (42.11.14)Vauxite Group  

42.11.14.01 Vauxite FeAl2(PO4)2(OH)2•6(H2O) P1 1

 

42.11.14.02 Paravauxite FeAl2(PO4)2(OH)2•8(H2O) P1 1

 

42.11.14.03 Sigloite FeAl2(PO4)2(OH)3•5(H2O) P1 1

 

42.11.14.04 Gordonite MgAl2(PO4)2(OH)2•8(H2O) P1 1

 

42.11.14.05 Mangangordonite (Mn,Fe,Mg)Al2(PO4)2(OH)2•8(H2O) P1 1

 

42.11.14.06 Kastningite! (Mn,Fe,Mg)Al2(PO4)2(OH)2•8(H2O) P1 1

 

42.11.14.07 Maghrebite! MgAl2(AsO4)2(OH)2•8H2O P1 1

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 Kastningite Information

See Also: Links to other databases for Kastningite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info
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