Khaidarkanite Mineral Data

Khaidarkanite Mineral Data

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General Khaidarkanite Information

Chemical Formula:

Na0.34Cu4Al3(OH)14F3·2(H2O)

Composition:

Molecular Weight = 674.07 gm

Sodium 1.16 % Na 1.56 % Na₂O

Aluminum 12.01 % Al 22.69 % Al₂O₃

Copper 37.71 % Cu 42.46 % Cu₂O

Hydrogen 2.69 % H 24.05 % H₂O

Oxygen 37.98 % O

Fluorine 8.46 % F 8.46 % F

- % F -3.56 % -O=F₂

______ ______

100.00 % 95.66 % = TOTAL OXIDE

Empirical Formula:

Na_0.34Cu₄Al₃(OH)₁₄F₃·2(H₂O)

Environment:

Oxidation zone of an antimony-mercury deposit.

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Khaidarkan antimony-mercury deposit, northern slope of the Alai Range, Fergana Valley, Kyrgyzstan. Link to MinDat.org Location Data.

Name Origin:

Named after the discovery locality.

Synonym:

IMA1998-013

Khaidarkanite Image

Images:

Khaidarkanite

Comments: Sky blue acicular radial sprays of khaidarkanite.
Location: Khaidarkan, Kyrgizia. Scale: Crystal size 1 mm.
© Tom Loomis / Dakota Matrix

Khaidarkanite Crystallography

Axial Ratios:

a:b:c =4.2469:1:3.5669

Cell Dimensions:

a = 12.346, b = 2.907, c = 10.369, Z = 1; beta = 97.9° V = 368.61 Den(Calc)= 3.04

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 2.006(1), 2.362(1), 4.232(1),2.828(0.9), 5.589(0.9), 1.871(0.8), 10.29(0.8),

Physical Properties of Khaidarkanite

Cleavage:

[100] Imperfect

Color:

Bright blue.

Density:

2.84

Diaphaniety:

Translucent

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Streak:

light blue

Optical Properties of Khaidarkanite

Gladstone-Dale:

CI meas= 0.077 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.138 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2026,KPDmeas= 0.2169,KC= 0.235

Optical Data:

Biaxial (+), a=1.585, b=1.615, g=1.648, bire=0.0630

Calculated Properties of Khaidarkanite

Electron Density:

r_electron=2.80 gm/cc
note: r_{Khaidarkanite}=2.84 gm/cc.

Fermion Index

Fermion Index = 0.00018
Boson Index = 0.99982

Photoelectric:

PE_{Khaidarkanite}= 16.62 barns/electron
U=PE_{Khaidarkanite} x r_electron= 46.47 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Khaidarkanite is Not Radioactive

Khaidarkanite Classification

Dana Class:

10.6.13.1 (10)Oxyhalides and Hydroxyhalides

(10.6)where Am Bn (O,OH)p Xq

(10.6.13)Dana Group

10.6.13.1 Khaidarkanite ! Na0.34Cu4Al3(OH)14F3·2(H2O) C 2/m 2/m

Strunz Class:

III/D.03-50 III - Halogenides

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

III/D.03 - Atacamite series, Claringbullite - Connellite

III/D.03-10 Claringbullite Cu4(OH)7Cl P 6₃/mmc 6/m 2/m 2/m

III/D.03-20 Simonkolleite Zn5(OH)8Cl2·(H2O) R 3m 3 2/m

III/D.03-25 Gordaite! NaZn(SO4)(OH)6Cl·6(H2O) P 3 3

III/D.03-30 Buttgenbachite Cu19Cl4(NO3)2(OH)32·2(H2O) P 6₃/mmc 6/m 2/m 2/m

III/D.03-40 Connellite Cu19Cl4(SO4)(OH)32·3(H2O) P 62c 6 m2

III/D.03-50 Khaidarkanite Na0.34Cu4Al3(OH)14F3·2(H2O) C 2/m 2/m

Other Khaidarkanite Information

References:

NAME( CanMin, 8/99) PHYS. PROP.(MinRec, Vol 31, No 4) OPTIC PROP.(MinRec, Vol 31, No 2)

See Also:

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

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

Khaidarkanite

Na0.34Cu4Al3(OH)14F3·2(H2O)
Dana No: 10.6.13.1 Strunz No: III/D.03-50
Locality:

Notes: