Bazhenovite Mineral Data

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:

CaS₅CaS₂O₃6(Ca)6(OH)₂•20(H₂O)

Environment:

Old burning coal dumps. A questionable mineral. Later study shows disordered assemblage of S3--, and to a lesser extent, S4-- groups.

IMA Status:

Approved IMA 1987

Locality:

Chelyabinsk coal basin, southern Ural Mountains, Russa. Link to MinDat.org Location Data.

Name Origin:

Named for A. G. Bazhenov (petrographer) and L. F. Bazhenov (analytical chemist), Russian scientists.

Name Pronunciation:

Bazhenovite + Pronunciation

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 - Prismatic H-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),

Physical Properties of Bazhenovite

Cleavage:

{???} Good

Color:

Light yellow, Orange.

Density:

1.83

Diaphaneity:

Transparent to Translucent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).

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.

Pleochroism (x):

deep yellow green.

Pleochroism (y):

greenish yellow.

Pleochroism (z):

pale greenish yellow.

Calculated Properties of Bazhenovite

Electron Density:

Bulk Density (Electron Density)=1.90 gm/cc
note: Specific Gravity of Bazhenovite =1.82 gm/cc.

Fermion Index:

Fermion Index = 0.0020673909
Boson Index = 0.9979326091

Photoelectric:

PE_Bazhenovite= 4.41 barns/electron
U=PE_Bazhenovite x rElectron Density= 8.37 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bazhenovite is Not Radioactive

Bazhenovite Classification

Dana Class:

29.09.03.01 (29)Hydrated Acid and Sulfates

(29.09)with miscellaneous formulae

(29.09.03)Dana Group

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

Strunz Class:

02.FD.50 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O

02.FD -With O, OH, H2O

02.FD.50 Bazhenovite CaS5•CaS2O3•6Ca(OH)2•20(H2O) P 2₁/c 2/m

Other Bazhenovite Information

References:

NAME( Dana8, AmMin, v90:1556) PHYS. PROP.(Am.Min.,Vol.74,p500,1989) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Bazhenovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Bazhenovite

CaS5•CaS2O3•6Ca(OH)2•20(H2O)
Dana No: 29.09.03.01 Strunz No: 02.FD.50
Locality:

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