Bazhenovite
A valid IMA mineral species
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About Bazhenovite
Formula:
Ca8S2(S3)(S2O3)(OH)12 · 20H2O
Colour:
Orange to yellow
Lustre:
Vitreous, Pearly
Hardness:
2
Specific Gravity:
1.83
Crystal System:
Monoclinic
Name:
Named in honor of Alfred Georgievich Bazhenov (Альфред Георгиевич Баженов) (b. 1931), geochemist and petrologist, and his wife, Lyudmila Fedorovna Bazhenova (Людмилы Федоровны Баженовой) (b. 1938), analytical chemist, of the Ilmensky Preserve, Miass, Chelyabinsk Region, Russia.
A mineral with sulphide S2-, trisulphide (S3)2- and thiosulphate (S2O3)2- anions.
However, according to Bindi et al. (2005), the presence of (S2O3)2- anions in bazhenovite is doubtful.
Compare sulfhydrylbystrite.
However, according to Bindi et al. (2005), the presence of (S2O3)2- anions in bazhenovite is doubtful.
Compare sulfhydrylbystrite.
Unique Identifiers
Mindat ID:
584
Long-form identifier:
mindat:1:1:584:3
GUID
(UUID V4):
(UUID V4):
591f380f-0add-41c6-8bc5-674c0c22011a
IMA Classification of Bazhenovite
Approved
IMA Formula:
Ca8S5(S2O3)(OH)12 · 20H2O
Approval year:
1986
First published:
1987
Classification of Bazhenovite
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
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
29.9.3.1
29 : HYDRATED ACID AND NORMAL SULFATES
9 : Miscellaneous
29 : HYDRATED ACID AND NORMAL SULFATES
9 : Miscellaneous
4.1
4 : Oxysulphides
4 : Oxysulphides
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Baz | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Bazhenovite
Vitreous, Pearly
Transparency:
Transparent, Translucent
Colour:
Orange to yellow
Streak:
Light yellow
Hardness:
2 on Mohs scale
Tenacity:
Brittle
Cleavage:
Very Good
on {010}
on {010}
Fracture:
Irregular/Uneven
Density:
1.83 g/cm3 (Measured) 1.845 g/cm3 (Calculated)
Optical Data of Bazhenovite
Type:
Biaxial (+)
RI values:
nα = 1.595 nβ = 1.619 nγ = 1.697
2V:
Measured: 60° , Calculated: 60°
Max Birefringence:
δ = 0.102
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
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°
Chemistry of Bazhenovite
Mindat Formula:
Ca8S2(S3)(S2O3)(OH)12 · 20H2O
Elements listed:
Crystallography of Bazhenovite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 8.45 Å, b = 17.47 Å, c = 8.24 Å
β = 119.5°
β = 119.5°
Ratio:
a:b:c = 0.484 : 1 : 0.472
Unit Cell 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}
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Big Balls | Small Balls | Just Balls | Spacefill
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Big Balls | Small Balls | Just Balls | Spacefill
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Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
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View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0003932 | Bazhenovite | Bindi L, Bonazzi P, Dei L, Zoppi A (2005) Does the bazhenovite structure really contain a thiosulfate group? A structural and spectroscopic study of a sample from the type locality American Mineralogist 90 1556-1562 |  | 2005 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.76 Å | (10) |
| 4.39 Å | (10) |
| 1.996 Å | (7) |
| 2.91 Å | (6) |
| 2.81 Å | (5) |
| 2.62 Å | (5) |
| 2.28 Å | (5) |
Comments:
Recorded on type material
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 54 : Coal and other mine fire minerals (see also #51 and #56) |
Type Occurrence of Bazhenovite
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:
Reference:
Chesnokov, B.V., Polyakov, V.O., Bushmakin, A.F. (1987) Bazhenovite CaS5.CaS2O3.6Ca(OH)2.20H2O - a new mineral. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 116: 737-743.
Synonyms of Bazhenovite
Other Language Names for Bazhenovite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 2.FD. | Ferrovalleriite | 2(Fe,Cu)S · 1.5Fe(OH)2 |
| 2.FD.05 | Kermesite | Sb2S2O |
| 2.FD.10 | Viaeneite | (Fe,Pb)4S8O |
| 2.FD.20 | Erdite | NaFeS2 · 2H2O |
| 2.FD.25 | Coyoteite | NaFe3S5 · 2H2O |
| 2.FD.30 | Haapalaite | (Fe2+,Ni)2(Mg,Fe2+)1.61S2(OH)3.22 |
| 2.FD.30 | Valleriite | (Fe2+,Cu)4(Mg,Al)3S4(OH,O)6 |
| 2.FD.30 | Yushkinite | (Mg,Al)V4+S2(OH)2 |
| 2.FD.30 | Ekplexite | (Nb,Mo,W)S2 · (Mg1-xAlx)(OH)2+x |
| 2.FD.35 | Tochilinite | Fe2+5-6(Mg,Fe2+)5S6(OH)10 |
| 2.FD.35 | Ferrotochilinite | Fe2+6(Fe2+,Mg)5S6(OH)10 |
| 2.FD.35 | Kaskasite | (Mo,Nb)S2 · (Mg1-xAlx)(OH)2+x |
| 2.FD.35 | Manganokaskasite | (Mo,Nb)S2 · (Mn1-xAlx)(OH)2+x |
| 2.FD.40 | Wilhelmramsayite | Cu3FeS3 · 2H2O |
| 2.FD.45 | Vyalsovite | FeCaAlS(OH)5 |
| 2.FD.55 | UM2004-56-OS:BiCuPb | PbCu4Bi4S2(O,OH,H2O)16 (?) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Bazhenovite
mindat.org URL:
https://www.mindat.org/min-584.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Bazhenovite
Reference List:
Localities for Bazhenovite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Belgium | |
| Collection Elmar Lackner |
| www.mindat.org (2016) |
France | |
| Berbain et al. (1998) |
| Eytier J.R. & Ch. et al. (2004) |
Germany | |
| Bender et al. (1994) |
| Christophe Boutry collection |
| T. Witzke & F. Rüger: Lapis 1998 (7/8) |
Russia | |
| |
| ZVMO (1987) +1 other reference |
UK | |
| |
| Colleen Thomson Collection and photo |
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Lapanouse-de-Sévérac slag locality, Sévérac-d'Aveyron, Rodez, Aveyron, Occitanie, France