Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Bazhenovite

Big Photo

Norfolk, England, UK
© C.Thomson 2003

Show Bazhenovite Photos (9)
Formula:
Ca
 
8
[(OH)
 
12
|S
 
2
O
 
3
|S
 
5
] · 20H
 
2
O
System:MonoclinicColour:Orange to yellow
Lustre:Vitreous, PearlyHardness:2
Name:For A. G. Bazhenov, geochemist and petrologist, and his wife, L. F. Bazhenova, analytical chemist, of the Il'menskii Preserve, Miass, Russia.


A mineral with polysulphide (Sx)2- and thiosulphate (S2O3)2- anions.

According to Bindi et al. (2005), the presence of (S2O3)2- anions in bazhenovite is doubtful.

Classification of Bazhenovite

IMA status:Approved 1986
Strunz 8th edition ID:2/F.12-10
Nickel-Strunz 10th (pending) edition ID:2.FD.50

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
D : With O, OH, H2O
Dana 8th edition ID:29.9.3.1

29 : HYDRATED ACID AND NORMAL SULFATES
9 : Miscellaneous
Hey's CIM Ref.:4.1

4 : Oxysulphides
mindat.org URL:http://www.mindat.org/min-584.html
Please feel free to link to this page.

Type Occurrence of Bazhenovite

Type Locality:Korkinskii coal quarry, Korkino, Chelyabinsk coal basin, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
General Appearance of Type Material:Bladed or platy, elongated crystals to 5 mm, in aggregates to 1 cm
Place of Conservation of Type Material:A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Geological Setting of type material:Among the melt products of an old, burning coal dump
Associated Minerals at type locality:
TroiliteSulphurSideritePyrrhotitePyrite
PortlanditePericlaseOldhamiteIronFluorite

Physical Properties of Bazhenovite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent, Translucent
Colour:Orange to yellow
Streak:Light yellow
Hardness (Mohs):2
Tenacity:Brittle
Cleavage:Very Good
on {010}
Fracture:Irregular/Uneven
Density (measured):1.83 g/cm3
Density (calculated):1.845 g/cm3

Crystallography of Bazhenovite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 8.45Å, b = 17.47Å, c = 8.24Å
β = 119.5°
Ratio:a:b:c = 0.484 : 1 : 0.472
Unit Cell Volume:V 1,058.70 ų (Calculated from Unit Cell)
Z:1
Morphology:Bladed or platy crystals, flattened on {010} and elongated along [001], showing {110}, {011}, {101} and {111}
X-Ray Powder Diffraction:
d-spacingIntensity
8.76 (10)
4.39 (10)
1.996 (7)
2.91 (6)
2.81 (5)
2.62 (5)
Comments:Recorded on type material

Optical Data of Bazhenovite

Type:Biaxial (+)
RI values: nα = 1.595 nβ = 1.619 nγ = 1.697
2V:Measured: 60° , Calculated: 60°
Maximum Birefringence:δ = 0.102

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v or r < v
Pleochroism:Strong
Comments:X = deep yellow-green, Y = greenish yellow, Z = pale greenish yellow; Orientation: X = b, Y = a, Z vs. c = 30°

Chemical Properties of Bazhenovite

Formula:
Ca
 
8
[(OH)
 
12
|S
 
2
O
 
3
|S
 
5
] · 20H
 
2
O
Idealised Formula:
Ca(S
P
2.63
S
S
2.22
)
 
=4.85
 · Ca(S
T
2.25
O
 
3.00
) · Ca
 
6.00
(OH)
 
12.20
 · 20.14H
 
2
O
Essential elements:Ca, H, O, S
All elements listed in formula:Ca, H, O, S
Analytical Data:Chemical analysis of type material, water determined by thermogravimetry. The data in the second column were obtained by deducing iron as an impurity, portlandite (1 wt.-%) and water (1 wt.-%), and recasting the sulphur as sulphide (S), polysulphide (P) and thiosulphate (T).
Fe   (1.34)     -
Ca  (28.12)  (27.58)
O    (9.08)  (12.20)
S   (19.56)
S(S)          (6.11) - sulphide
S(P)          (7.25) - polysulphide
S(T)          (6.20) - thiosulphate
OH            (9.46)
H2O (41.9)   (31.20)

sum 100.00 wt.-%
Empirical Formula:
Ca
 
8
[(OH)
 
12
|S
 
2
O
 
3
|S
 
5
] · 20H
 
2
O

Relationship of Bazhenovite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.FD.UKI-2004-(OS:BiCuPb)
PbCu
 
4
Bi
 
4
S
 
2
O
 
16
 (?)
2.FD.05Kermesite
Sb
 
2
S
 
2
O
2.FD.10Viaeneite
(Fe,Pb)
 
4
S
 
8
O
2.FD.20Erdite
NaFeS
 
2
·2H
 
2
O
2.FD.25Coyoteite
NaFe
 
3
S
 
5
·2H
 
2
O
2.FD.30Haapalaite
(Fe
2+
 
,Ni)
 
2
(Mg,Fe
2+
 
)
 
1.61
[(OH)
 
3.22
|S
 
2
]
2.FD.30Valleriite
(Fe
2+
 
,Cu)
 
4
(Mg,Al)
 
3
[(OH,O)
 
6
|S
 
4
]
2.FD.30Yushkinite
(Mg,Al)[(OH)
 
2
 (VS
 
2
)
2.FD.35Tochilinite
Fe
2+
5-6
(Mg,Fe
2+
 
)
 
5
[(OH)
 
10
|S
 
6
]
2.FD.40Wilhelmramsayite
Cu
 
3
FeS
 
3
·2H
 
2
O
2.FD.45Vyalsovite
FeCaAl[(OH)
 
5
|S]
Related Minerals - Hey's Index Grouping:

- +
4.2Kermesite
Sb
 
2
S
 
2
O
4.3Sarabauite
CaSb
 
10
O
 
10
S
 
6
4.4Schöllhornite
Na
 
0.3
CrS
 
2
·H
 
2
O
4.5Yushkinite
(Mg,Al)[(OH)
 
2
 (VS
 
2
)
4.6Vyalsovite
FeCaAl[(OH)
 
5
|S]
4.7Valleriite
(Fe
2+
 
,Cu)
 
4
(Mg,Al)
 
3
[(OH,O)
 
6
|S
 
4
]
4.8Tochilinite
Fe
2+
5-6
(Mg,Fe
2+
 
)
 
5
[(OH)
 
10
|S
 
6
]
4.9Haapalaite
(Fe
2+
 
,Ni)
 
2
(Mg,Fe
2+
 
)
 
1.61
[(OH)
 
3.22
|S
 
2
]
4.10Apuanite
Fe
2+
 
Fe
3+
4
Sb
3+
4
O
 
12
S
4.11Versiliaite
Fe
 
2
Fe
 
4
Sb
 
6
O
 
16
S

Other Names for Bazhenovite

Synonyms:
IMA1986-053
Other Languages:
German:Bazhenovit
Russian:Баженовит
Spanish:Bazhenovita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Bazhenovite

Reference List:Chesnokov, B. V., Polyakov, V. O. and Bushmakin, A. F. (1987): Bazhenovite CaS5.CaS2O3.6Ca(OH)2.20H2O - a new mineral. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 116, 737-743 (in Russian). - American Mineralogist (1989), 74, 500 (abstract).

Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 48.

Bindi, L., Bonazzi, P., Dei, L., Zoppi, A. (2005): Does bazhenovite structure really contain thiosulphate group? A structural and spectroscopic study of a sample from the type-locality. American Mineralogist 90, 1556-1562.

Internet Links for Bazhenovite

Search Engines:
  • Look for Bazhenovite on Google
  • Look for Bazhenovite images on Google
    • External Links:
  • Look for Bazhenovite on Webmineral
  • Look for Bazhenovite on Athena Mineralogy
  • Look for Bazhenovite on Wikipedia
  • Look for Bazhenovite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Bazhenovite in the Natural History Museum (London) online catalogue
  • Bazhenovite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Top quality minerals from Kristalle of California
  • Rare and Unusual minerals at Mineralogical Research Company
  • Buy Fine Minerals from mineralsweb.com
  • Buy from David K Joyce minerals
  • Search for - Bazhenovite - on e-Rocks Mineral Sales & Auctions
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • High-end worldwide specimens & outstanding customer service
  • Edwards Minerals - Fine Specimens
  • Find Bazhenovite on www.crystalclassics.co.uk
  • Wendel Minerals - Auktion & Shop
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Wilensky Fine Minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Bazhenovite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Belgium
     
    • Hainaut (Henegouwen; Hennegau) Province
      • Charleroi
    		Collection Elmar Lackner
    France
     
    • Midi-Pyrénées
      • Aveyron
    		Eytier J.R. & Ch., Favreau G., Devouard B., Vigier J. (2004), Minéraux de pyrométamorphisme de Lapanouse-de Sévérac (Aveyron), Cahier des Micromonteurs, n°85, pp: 3-58
    Germany
     
    • Thuringia
      • Gera
        • Ronneburg U deposit
    		T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
    Russia
     
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Chelyabinsk coal basin
            • Korkino
    		ZVMO,(1987) 116, 737-743; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    UK
     
    • England
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 5th Nov 2009 00:49:49