Kastningite Mineral Data

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.

Synonym:

ICSD 410793

IMA1997-033

Kastningite Image

Images:

Kastningite

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

Kastningite Crystallography

Axial Ratios:

a:b:c =0.6869:1:1.0292

Cell Dimensions:

a = 7.0102, b = 10.205, c = 10.504, Z = 2; alpha = 71.82°, beta = 89.62°, gamma = 69.9° V = 670.44 Den(Calc)= 2.36

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

$Help on X Ray Diffraction:$ 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),

Physical Properties of Kastningite

Color:

White, Beige, Colorless.

Density:

2.35

Diaphaniety:

Transparent to Translucent

Habit:

Tabular - Form dimensions are thin in one direction.

Habit:

Thin - Flat dimensioned crystals.

Hardness:

1-2 - Between Talc and Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Kastningite

Gladstone-Dale:

CI meas= -0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2432,KPDmeas= 0.2443,KC= 0.2433

Optical Data:

Biaxial (-), a=1.5665, b=1.574, g=1.5815, bire=0.0150

Calculated Properties of Kastningite

Electron Density:

r_electron=2.41 gm/cc
note: r_Kastningite=2.36 gm/cc.

Fermion Index

Fermion Index = 0.00129
Boson Index = 0.99871

Photoelectric:

PE_Kastningite= 3.88 barns/electron
U=PE_Kastningite x r_electron= 9.33 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kastningite is Not Radioactive

Kastningite Classification

Dana Class:

42.11.14.6 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.11)where (AB)4 (XO4)3 Zq · x(H2O)

(42.11.14)Dana Group

42.11.14.1 Vauxite FeAl2(PO4)2(OH)2·6(H2O) P1 1

42.11.14.2 Paravauxite FeAl2(PO4)2(OH)2·8(H2O) P1 1

42.11.14.3 Sigloite FeAl2(PO4)2(OH)3·5(H2O) P1 1

42.11.14.4 Gordonite MgAl2(PO4)2(OH)2·8(H2O) P1 1

42.11.14.5 Mangangordonite (Mn,Fe,Mg)Al2(PO4)2(OH)2·8(H2O) P1 1

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

Strunz Class:

VII/D.09-25 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of medium size: Cu, Zn, Mn, Al, Fe

VII/D.09 - Vauxite - Pseudolaueite series

VII/D.09-10 Vauxite FeAl2(PO4)2(OH)2·6(H2O) P1 1

VII/D.09-20 Metavauxite FeAl2(PO4)2(OH)2·8(H2O) P 2₁/c 2/m

VII/D.09-25 Kastningite (Mn,Fe,Mg)Al2(PO4)2(OH)2·8(H2O) P1 1

VII/D.09-30 Stewartite MnFe2(PO4)2(OH)2·8(H2O) P1 1

VII/D.09-40 Pseudolaueite MnFe2(PO4)2(OH)2·7-8(H2O) P 2₁/a 2/m

Other Kastningite Information

References:

NAME( CanMin, 8/99) PHYS. PROP.(AmMin, V84, p1465) OPTIC PROP.(AmMin, V84, p1465)

See Also:

Links to other databases for Kastningite :
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

Search for Kastningite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Kastningite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Kastningite Mineral Data :

Ask about Kastningite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Kastningite Specimen Label here :

Kastningite

(Mn++,Fe++,Mg)Al2(PO4 )2(OH)2·8(H2O)
Dana No: 42.11.14.6 Strunz No: VII/D.09-25
Locality:

Notes: