Kazakhstanite Mineral Data

Kazakhstanite Mineral Data +

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General Kazakhstanite Information

Chemical Formula:

Fe+++5V++++3V+++++12O39·8.5(H2O)

Composition:

Molecular Weight = 1,820.46 gm

Vanadium 41.97 % V 74.93 % V₂O₅

Iron 15.34 % Fe 21.93 % Fe₂O₃

Hydrogen 0.94 % H 8.41 % H₂O

Oxygen 41.75 % O

______ ______

100.00 % 105.27 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺₅V⁵⁺₃V⁵⁺₁₂O₃₉·8.5(H₂O)

Environment:

Black shales.

IMA Status:

Approved IMA 1989

Locality:

Northwestern Karatau, Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Kazakhstanite Image

Images:

Kazakhstanite

Comments: Deep black sooty coatings of kazakhstanite on silicified rock.
Location: Gold Quarry Mine, Carlin Trend, Eureka County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kazakhstanite Crystallography

Axial Ratios:

a:b:c =3.2438:1:5.8273

Cell Dimensions:

a = 11.84, b = 3.65, c = 21.27, Z = 1; beta = 100° V = 905.24 Den(Calc)= 3.34

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): 10.51(1), 3.484(0.6), 2.606(0.4),

Physical Properties of Kazakhstanite

Cleavage:

[001] Perfect

Color:

Black.

Density:

3.4 - 3.6, Average = 3.5

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

2.5 - Finger Nail

Luster:

Subadamantine

Streak:

brownish black

Optical Properties of Kazakhstanite

Optical Data:

Biaxial (?)

NCalc= 2.18 - from Gladstone-Dale relationship (KC = 0.3524) where Ncalc=Dcalc*KC+1
NCalc= 2.23 - from Gladstone-Dale relationship (KC = 0.3524) where Ncalc=Dmeas*KC+1

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Kazakhstanite in Air**
λ	R	∑ R(λ)
440 nm	16.40
460 nm	15.80
480 nm	15.00
500 nm	14.30
520 nm	13.60
540 nm	13.10
560 nm	12.80
580 nm	12.30
600 nm	12.10
620 nm	12.00
640 nm	12.00
660 nm	11.90
680 nm	11.80
700 nm	11.80

**Calculated Relative Intensity Colors of Kazakhstanite in Air**
Relative Intensity	0%	80%	100%	160%	240%	320%	400%	480%	560%	640%	720%
R

Calculated Properties of Kazakhstanite

Electron Density:

r_electron=3.20 gm/cc
note: r_{Kazakhstanite}=3.34 gm/cc.

Fermion Index

Fermion Index = 0.0045
Boson Index = 0.9955

Photoelectric:

PE_{Kazakhstanite}= 12.72 barns/electron
U=PE_{Kazakhstanite} x r_electron= 40.69 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kazakhstanite is Not Radioactive

Kazakhstanite Classification

Dana Class:

47.3.2.6 (47)Vanadium Oxysalts

(47.3)(Hydrated)

(47.3.2)Dana Group

47.3.2.1 Straczekite (Ca,K,Ba)2V8O20·3(H2O) C 2/m 2/m

47.3.2.2 Corvusite (Na,Ca,K)V8O20·4(H2O) C 2/m 2/m

47.3.2.3 Fernandinite CaV8O20·4(H2O) C 2/m 2/m

47.3.2.4 Bariandite Al0.6V8O20·9(H2O) C 2/c 2/m

47.3.2.5 Bokite (Al,Fe)1.3(V,Fe)8O20·4.7(H2O) C 2/m 2/m

47.3.2.6 Kazakhstanite Fe5V3V12O39·8.5(H2O) C 2/m 2/m

Strunz Class:

IV/G.03-10 IV - Oxides

IV/G - Vanadiumoxides (with V4+/5+), Appendix to vanadates: Unclassified vanadates

IV/G.03 - Unclassified vanadates, Kazakhstanite

IV/G.03-10 Kazakhstanite Fe5V3V12O39·8.5(H2O) C 2/m 2/m

Other Kazakhstanite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Kazakhstanite :
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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Kazakhstanite

Fe+++5V++++3V+++++12O39·8.5(H2O)
Dana No: 47.3.2.6 Strunz No: IV/G.03-10
Locality:

Notes: