Artroeite Mineral Data

Artroeite Mineral Data +

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General Artroeite Information

Chemical Formula:

PbAlF3(OH)2

Composition:

Molecular Weight = 325.19 gm

Aluminum 8.30 % Al 15.68 % Al₂O₃

Hydrogen 0.62 % H 5.54 % H₂O

Lead 63.72 % Pb 68.64 % PbO

Oxygen 9.84 % O

Fluorine 17.53 % F 17.53 % F

- % F -7.38 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbAlF₃(OH)₂

Environment:

In a quartz-lined vug.

IMA Status:

Approved IMA 1995

Locality:

The Grand Reef mine, near Klondyke, Graham County, Arizona, USA. Link to MinDat.org Location Data.

Name Origin:

For Dr. Arthur (Art) Roe (1912-1993).

Synonym:

ICSD 79740

IMA1993-031

PDF 47-1868

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Artroeite Crystallography

Axial Ratios:

a:b:c =0.9192:1:0.7413

Cell Dimensions:

a = 6.27, b = 6.821, c = 5.057, Z = 2; alpha = 90.113°, beta = 107.115°, gamma = 104.767° V = 199.87 Den(Calc)= 5.40

Crystal System:

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

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

By Intensity(I/I_o): 4.42(1), 2.595(0.7), 2.19(0.65),

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Crystal Structure:

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Kampf A R , Foord E E , American Mineralogist , 80 (1995) p.179-183, Artroeite, PbAlF3(OH)2, a new mineral from the Grand Reef mine, Graham County,, Arizona: Description and crystal structure

Physical Properties of Artroeite

Cleavage:

[100] Perfect, [010] Good

Color:

Colorless.

Density:

5.36 - 5.42, Average = 5.39

Diaphaniety:

Transparent

Fracture:

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

Habit:

Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Artroeite

Gladstone-Dale:

CI meas= 0.179 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.181 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1236,KPDmeas= 0.1238,KC= 0.1508

Optical Data:

Biaxial (-), a=1.629, b=1.682, g=1.691, bire=0.0620, 2V(Calc)=42, 2V(Meas)=41.

Calculated Properties of Artroeite

Electron Density:

r_electron=4.64 gm/cc
note: r_Artroeite=5.39 gm/cc.

Fermion Index

Fermion Index = 0.14086
Boson Index = 0.85914

Photoelectric:

PE_Artroeite=1,136.36 barns/electron
U=PE_Artroeite x r_electron=5,273.80 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Artroeite is Not Radioactive

Artroeite Classification

Dana Class:

11.6.18.1 (11)Halide Complexes; Alumino-fluorides

(11.6)with miscellaneous formulae

(11.6.18)Dana Group

11.6.18.1 Artroeite PbAlF3(OH)2 P1 1

Strunz Class:

III/C.01-35 III - Halogenides

III/C - Double halogenides with water, Fluorides

III/C.01 - Gearksutite - Chukhrovite - (Ce) series

III/C.01-10 Gearksutite CaAl(OH,F)5·(H2O) Mono

III/C.01-20 Acuminite SrAlF4(OH)·(H2O) C 2/c 2/m

III/C.01-30 Tikhonenkovite SrAl(OH)F4·(H2O) Unk Mono

III/C.01-35 Artroeite PbAlF3(OH)2 P1 1

III/C.01-40 Creedite Ca3Al2(SO4)(F,OH)10·2(H2O) C 2/c 2/m

III/C.01-50 Chukhrovite-(Y) Ca3(Y,Ce)Al2(SO4)F13·10(H2O) F d3 2/m 3

III/C.01-60 Chukhrovite-(Ce) Ca3(Ce,Y)Al2(SO4)F13·10(H2O) F d3 2/m 3

Other Artroeite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p179-183,1995) OPTIC PROP.(MinRec)

See Also:

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

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

Artroeite

PbAlF3(OH)2
Dana No: 11.6.18.1 Strunz No: III/C.01-35
Locality:

Notes: