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

Images:

Kastningite

Comments: Colorless crystals of kastningite.
Location: Silbergrube Quarry, Waidhaus, VohenstrauÃŸ, Oberpfalz, Bavaria, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Kastningite Crystallography

$Help on X Ray Diffraction:$ 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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Print or Cut-and-Paste your Kastningite Specimen Label here :

Kastningite

(Mn++,Fe++,Mg)Al2(PO4 )2(OH)2•8(H2O)
Dana No: 42.11.14.06 Strunz No: 08.DC.30
Locality:

Notes: