Kintoreite Mineral Data

Kintoreite Mineral Data +

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General Kintoreite Information

Chemical Formula:

PbFe+++3(PO4)2(OH,H2O)6

Composition:

Molecular Weight = 668.24 gm

Iron 25.07 % Fe 35.85 % Fe₂O₃

Phosphorus 9.27 % P 21.24 % P₂O₅

Hydrogen 1.13 % H 10.11 % H₂O

Lead 31.01 % Pb 33.40 % PbO

Oxygen 33.52 % O

______ ______

100.00 % 100.60 % = TOTAL OXIDE

Empirical Formula:

PbFe³⁺₃(PO₄)₂(OH)_4.5(H₂O)_1.5

Environment:

Crusts line cavities in goethite. Encrustations on quartz and garnet-rich lode rocks.

IMA Status:

Approved IMA 1995

Locality:

Kintore opencut and Block 14 opencut, Broken Hill, New South Wales, Australia. Link to MinDat.org Location Data.

Name Origin:

For the locality.

Synonym:

ICSD 85127

IMA1992-045

PDF 47-1878

Kintoreite Image

Images:

Kintoreite

Comments: Yellow rounded crystal grains of kintoreite on limonite.
Location: Kintore Open Cut, Broken Hill, New South Wales, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kintoreite Crystallography

Axial Ratios:

a:c = 1:2.30716

Cell Dimensions:

a = 7.325, c = 16.9, Z = 3; V = 785.29 Den(Calc)= 4.24

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 3.07(1), 5.96(0.9), 3.67(0.6),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Kharisun , Taylor M R , Bevan D J M , Pring A , Mineralogical Magazine , 61 (1997) p.123-129, The crystal structure of kintoreite, PbFe3(PO4)2(OH,H2O)6, Note: occupancy of P and As are switched from the reported values, Locality: Kintore opencut, Broken Hill, New South Wales, Australia

Physical Properties of Kintoreite

Cleavage:

[001] Good

Color:

Cream white, Yellowish green, Brownish yellow.

Density:

4.25 - 4.34, Average = 4.29

Diaphaniety:

Transparent to translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

4 - Fluorite

Luster:

Vitreous - Greasy

Streak:

pale yellowish green

Optical Properties of Kintoreite

Dichroism (e):

light yellowish green.

Dichroism (w):

medium yellow.

Gladstone-Dale:

CI meas= 0.051 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.039 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2217,KPDmeas= 0.2189,KC= 0.2306

Optical Data:

Uniaxial (-), e=1.935, w=1.935-1.955, bire=0.0000-0.0200.

Calculated Properties of Kintoreite

Electron Density:

r_electron=3.93 gm/cc
note: r_Kintoreite=4.24 gm/cc.

Fermion Index

Fermion Index = 0.074
Boson Index = 0.926

Photoelectric:

PE_Kintoreite= 522.23 barns/electron
U=PE_Kintoreite x r_electron=2,051.10 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kintoreite is Not Radioactive

Kintoreite Classification

Dana Class:

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

(42.7)where (AB)5 (XO4)3 Zq · x(H2O)

(42.7.3)Dana Group

42.7.3.1 Crandallite CaAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m

42.7.3.2 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 Cm m

42.7.3.3 Goyazite SrAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m

42.7.3.4 Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5·(H2O) R 3m 3m

42.7.3.5 Plumbogummite PbAl3(PO4)2(OH)5·(H2O) R 3m 3 2/m

42.7.3.6 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m

42.7.3.7 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m

42.7.3.8 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m

Strunz Class:

VIII/B.36-163 VIII - Silicates

VIII/B - Nesosub-silicates. "Insel" silicates with anions unfamiliar to tetraheders. Uranyl-"Insel" silicates with [UO2]2+ - [SiO4]4-

VIII/B.36 - Soddyite - Swamboite series

VIII/B.36-10 Soddyite (UO2)2SiO4·2(H2O) F ddd 2/m 2/m 2/m

VIII/B.36-20 Swamboite UH6(UO2)6(SiO4)6·30(H2O) P 2₁/a 2/m

VIII/B.36-163 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m

VIII/B.36-165 Segnitite PbFe3H(AsO4)2(OH)6 R 3m 3 2/m

Other Kintoreite Information

References:

NAME( MinRec) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Kintoreite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas

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Kintoreite

PbFe+++3(PO4)2(OH,H2O)6
Dana No: 42.7.3.6 Strunz No: VIII/B.36-163
Locality:

Notes: