Zharchikhite Mineral Data

Zharchikhite Mineral Data +

General Zharchikhite Information

Chemical Formula:

AlF(OH)2

Composition:

Molecular Weight = 79.99 gm

Aluminum 33.73 % Al 63.73 % Al₂O₃

Hydrogen 2.52 % H 22.52 % H₂O

Oxygen 40.00 % O

Fluorine 23.75 % F 23.75 % F

- % F -10.00 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

AlF(OH)₂

IMA Status:

Approved IMA 1988

Locality:

Link to MinDat.org Location Data.

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Zharchikhite Crystallography

Axial Ratios:

a:b:c =0.6584:1:0.6603

Cell Dimensions:

a = 5.164, b = 7.843, c = 5.179, Z = 4; beta = 116.244° V = 188.13 Den(Calc)= 2.82

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

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

By Intensity(I/I_o): 3.98(1), 1.833(0.9), 2.92(0.8),

Physical Properties of Zharchikhite

Cleavage:

[???] Perfect

Color:

Colorless.

Density:

2.81

Diaphaniety:

Transparent

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Zharchikhite

Gladstone-Dale:

CI meas= 0.108 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.112 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1952,KPDmeas= 0.1958,KC= 0.2197

Optical Data:

Biaxial (-), a=1.532, b=1.552, g=1.567, bire=0.0350, 2V(Calc)=80, 2V(Meas)=80.

Calculated Properties of Zharchikhite

Electron Density:

r_electron=2.81 gm/cc
note: r_Zharchikhite=2.81 gm/cc.

Fermion Index

Fermion Index = 0.00019
Boson Index = 0.99981

Photoelectric:

PE_Zharchikhite= 1.16 barns/electron
U=PE_Zharchikhite x r_electron= 3.27 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Zharchikhite is Not Radioactive

Zharchikhite Classification

Dana Class:

10.2.8.1 (10)Oxyhalides and Hydroxyhalides

(10.2)where A (O,OH) Xq

(10.2.8)Dana Group

10.2.8.1 Zharchikhite AlF(OH)2 P 2₁/a 2/m

Strunz Class:

III/D.04-05 III - Halogenides

III/D - Oxi-halogenides with Mg - Mn - Cu - Zn - Sn

III/D.04 - Atacamite series and related compounds

III/D.04-05 Zharchikhite AlF(OH)2 P 2₁/a 2/m

III/D.04-10 Zirklerite (Fe,Mg)9Al4Cl18(OH)12·14(H2O)(?) Unk Trig

Other Zharchikhite Information

References:

PHYS. PROP.(Am.Min.,Vol.74,p504,1989) OPTIC PROP.(Am.Min.,Vol.74,p504,1989)

See Also:

Links to other databases for Zharchikhite :
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 -École des Mines de Paris

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

Zharchikhite

AlF(OH)2
Dana No: 10.2.8.1 Strunz No: III/D.04-05
Locality:

Notes: