Bazhenovite Mineral Data

Bazhenovite Mineral Data +

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General Bazhenovite Information

Chemical Formula:

CaS5·CaS2O3·6Ca(OH)2·20(H2O)

Composition:

Molecular Weight = 1,157.48 gm

Calcium 27.70 % Ca

Hydrogen 4.53 % H

Sulfur 19.39 % S

Oxygen 48.38 % O

______

100.00 %

Empirical Formula:

Ca₈S₅S₂O₃(OH)₁₂·20(H₂O)

IMA Status:

Approved IMA 1987

Locality:

Link to MinDat.org Location Data.

Bazhenovite Image

Images:

Bazhenovite

Comments: Yellow, bladed crystals of bazhenovite on matrix.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Bazhenovite Crystallography

Axial Ratios:

a:b:c =0.4836:1:0.4716

Cell Dimensions:

a = 8.45, b = 17.47, c = 8.24, Z = 1; beta = 119.5° V = 1,058.70 Den(Calc)= 1.82

Crystal System:

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

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

By Intensity(I/I_o): 4.39(1), 8.76(1), 1.996(0.7),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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I - Data Info
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Help on Above

Bindi L , Bonazzi P , Dei L , Zoppi A , American Mineralogist , 90 (2005) p.1556-1562, Does the bazhenovite structure really contain a thiosulfate group?, A structural and spectroscopic study of a sample from the type locality, Sample: Chelyabinsk coal basin, South Urals, Russia

Physical Properties of Bazhenovite

Cleavage:

[???] Good

Color:

Light yellow, Orange.

Density:

1.83

Diaphaniety:

Transparent to Translucent

Hardness:

2 - Gypsum

Luster:

Vitreous - Pearly

Streak:

light yellow

Optical Properties of Bazhenovite

Optical Data:

Biaxial (+), a=1.595, b=1.619, g=1.697, bire=0.1020, 2V(Calc)=62, 2V(Meas)=60.3.

Calculated Properties of Bazhenovite

Electron Density:

r_electron=1.90 gm/cc
note: r_Bazhenovite=1.82 gm/cc.

Fermion Index

Fermion Index = 0.00206
Boson Index = 0.99794

Photoelectric:

PE_Bazhenovite= 4.41 barns/electron
U=PE_Bazhenovite x r_electron= 8.37 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Bazhenovite is Not Radioactive

Bazhenovite Classification

Dana Class:

29.9.3.1 (29)Hydrated Acid and Sulfates

(29.9)with miscellaneous formulae

(29.9.3)Dana Group

29.9.3.1 Bazhenovite CaS5·CaS2O3·6Ca(OH)2·20(H2O) P 2₁/c 2/m

Strunz Class:

II/F.12-10 II - Sulfides and sulphosalts

II/F - Sulfides with nonmetallic properties, Oxisulfides

II/F.12 - Bazhenovite series

II/F.12-05 Viaeneite! (Fe,Pb)4S8O Mono

II/F.12-10 Bazhenovite CaS5·CaS2O3·6Ca(OH)2·20(H2O) P 2₁/c 2/m

Other Bazhenovite Information

References:

PHYS. PROP.(Am.Min.,Vol.74,p500,1989) OPTIC PROP.(Am.Min.,Vol.74,p500,1989)

See Also:

Links to other databases for Bazhenovite :
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 Bazhenovite Specimen Label here :

Bazhenovite

CaS5·CaS2O3·6Ca(OH)2·20(H2O)
Dana No: 29.9.3.1 Strunz No: II/F.12-10
Locality:

Notes: