Yushkinite Mineral Data

Yushkinite Mineral Data +

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General Yushkinite Information

Chemical Formula:

V1-xS·n(Mg,Al)(OH)2

Composition:

Molecular Weight = 87.39 gm

Magnesium 11.88 % Mg

Aluminum 7.53 % Al

Vanadium 23.32 % V

Hydrogen 2.31 % H

Sulfur 18.35 % S

Oxygen 36.62 % O

______

100.00 %

Empirical Formula:

V³⁺_0.4S_0.50.61(Mg_0.7)0.61(Al_0.4)(OH)₂

Environment:

In quartz-carbonate veins in carbonate rocks.

IMA Status:

Approved IMA 1984

Locality:

From Pay-Khoy, in the middle stram of the Silova-Yakha River, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for N. P. Yushkin, Russian mineralogist.

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Yushkinite Crystallography

Axial Ratios:

a:c = 1:3.52024

Cell Dimensions:

a = 3.21, c = 11.3, Z = 2; V = 100.84 Den(Calc)= 2.88

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: P 3m1

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

By Intensity(I/I_o): 5.68(1), 1.575(0.6), 2.76(0.6),

Physical Properties of Yushkinite

Color:

Violet, Red lilac, Pinkish gray.

Density:

2.94

Diaphaniety:

Opaque

Fracture:

Plastic - Deforms like soft, plastic materials.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Flakes - Flat, thin crystals or aggregates.

Habit:

Scaly - Morphology like fish scales.

Hardness:

1 - Talc

Luster:

Metallic

Streak:

reddish gray

Optical Properties of Yushkinite

RL Anisotrophism:

Strong, orange-red with weak lilac tint in isotropic sections, red-lilac to pinkish dark gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Yushkinite in Air**
λ	R	∑ R(λ)
440 nm	26.00
460 nm	22.40
480 nm	19.00
500 nm	17.60
520 nm	17.80
540 nm	18.70
560 nm	20.70
580 nm	23.30
600 nm	26.40
620 nm	29.60
640 nm	32.80
660 nm	35.70
680 nm	38.20
700 nm	40.10

**Calculated Relative Intensity Colors of Yushkinite in Air**
Relative Intensity	0%	50%	100%	150%	200%	250%	300%	350%	400%	420%
R

Calculated Properties of Yushkinite

Electron Density:

r_electron=2.87 gm/cc
note: r_Yushkinite=2.88 gm/cc.

Fermion Index

Fermion Index = 0.01401
Boson Index = 0.98599

Photoelectric:

PE_Yushkinite= 5.79 barns/electron
U=PE_Yushkinite x r_electron= 16.61 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Yushkinite is Not Radioactive

Yushkinite Classification

Dana Class:

2.14.3.2 (2)Sulfides - Including Selenides and Tellurides

(2.14)(Hydroxyl or Hydrated)

(2.14.3)Dana Group

2.14.3.1 Haapalaite 2(Fe,Ni)S·1.6(Mg,Fe)(OH)2 R 3m ? 3 2/m

2.14.3.2 Yushkinite V1-xS·n(Mg,Al)(OH)2 P 3m1 3m

Strunz Class:

II/C.23-10 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.23 - Yushkinite - Vyalsovite series

II/C.23-10 Yushkinite V1-xS·n(Mg,Al)(OH)2 P 3m1 3m

II/C.23-20 Valleriite 4(Fe,Cu)S·3(Mg,Al)(OH)2 R 3m 3 2/m

II/C.23-30 Haapalaite 2(Fe,Ni)S·1.6(Mg,Fe)(OH)2 R 3m ? 3 2/m

II/C.23-40 Tochilinite 6Fe0.9S·5(Mg,Fe)(OH)2 P 2, Pm, or P 2/m Mono

II/C.23-50 Vyalsovite FeS·Ca(OH)2·Al(OH)3 C mmm ? 2/m 2/m 2/m

Other Yushkinite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Yushkinite :
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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Yushkinite

V1-xS·n(Mg,Al)(OH)2
Dana No: 2.14.3.2 Strunz No: II/C.23-10
Locality:

Notes: