Kingite Mineral Data

General Kingite Information

Chemical Formula:

Al3(PO4)2(F,OH)2•8(H2O,OH)

Composition:

Molecular Weight = 455.79 gm

Aluminum 18.94 % Al 35.79 % Al₂O₃

Phosphorus 13.59 % P 31.14 % P₂O₅

Hydrogen 3.16 % H 28.26 % H₂O

Oxygen 57.22 % O

Fluorine 7.09 % F 7.09 % F

- % F -2.98 % -O=F₂

______ ______

100.00 % 99.30 % = TOTAL OXIDE

Empirical Formula:

Al_3.2(PO₄)₂F_1.7(OH)_0.3•6(H₂O)2(OH)

Environment:

Small fine-grained nodules in a phosphate deposit.

IMA Status:

Valid Species (Pre-IMA) 1957

Locality:

Fairview mine, Robertstown, Burra County, SA, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for D. King, 1926-1990), geologist, Department of Mines, SA, Australia.

Name Pronunciation:

Kingite

Kingite Image

Images:

Kingite

Comments: White flakes of kingite in matrix.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Kingite Crystallography

Axial Ratios:

a:b:c =0.9272:1:0.7058

Cell Dimensions:

a = 9.377, b = 10.113, c = 7.138, Z = 2; alpha = 97.6°, beta = 100.88°, gamma = 96.01° V = 655.27 Den(Calc)= 2.31

Crystal System:

Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 9.1(1), 3.45(0.8), 3.48(0.65),

Physical Properties of Kingite

Color:

White.

Density:

2.2 - 2.3, Average = 2.25

Diaphaneity:

Translucent

Habit:

Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Habit:

Platy - Sheet forms (e.g. micas).

Streak:

white

Optical Properties of Kingite

Gladstone-Dale:

CI meas= 0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.039 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2216,KPDmeas= 0.2284,KC= 0.2305
Ncalc = 1.51 - 1.53

Optical Data:

Biaxial (?), b=1.514

Calculated Properties of Kingite

Electron Density:

Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Kingite =2.25 gm/cc.

Fermion Index:

Fermion Index = 0.0002793863
Boson Index = 0.9997206137

Photoelectric:

PE_Kingite= 1.31 barns/electron
U=PE_Kingite x rElectron Density= 3.00 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kingite is Not Radioactive

Kingite Classification

Dana Class:

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

(42.10)where (AB)3 (XO4)2 Zq ï¿½ x(H2O)

(42.10.03)Dana Group

42.10.03.01 Kingite Al3(PO4)2(F,OH)2•8(H2O,OH) P1 1

Strunz Class:

08.DC.47 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.47 Kingite Al3(PO4)2(F,OH)2•8(H2O,OH) P1 1

Other Kingite Information

References:

NAME( Dana8) PHYS. PROP.(AmMin, Vol 87, p 235) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Kingite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Kingite

Al3(PO4)2(F,OH)2•8(H2O,OH)
Dana No: 42.10.03.01 Strunz No: 08.DC.47
Locality:

Notes:

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