Karpovite
A valid IMA mineral species
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About Karpovite
Formula:
Tl2VO(SO4)2(H2O)
Colour:
White, light blue
Lustre:
Adamantine
Hardness:
2
Specific Gravity:
4.743 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honour of Professor Gennadii Alexandrovich Karpov (Геннадий Александрович Карпов) (b. 25 April 1938), volcanologist at the Institute of Volcanology, Russian Academy of Sciences, Petropavlovsk-Kamchatskii, Kamchatka Peninsula, Russia. Professor Karpov specializes in the field of Hg, Sb and As mineralization in zones of active volcanism.
This page provides mineralogical data about Karpovite.
Unique Identifiers
Mindat ID:
43907
Long-form identifier:
mindat:1:1:43907:7
GUID
(UUID V4):
(UUID V4):
13133465-0918-479e-b124-1036706e98b2
IMA Classification of Karpovite
Approved
Approval year:
2013
Classification of Karpovite
7.DB.27
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
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 |
---|---|---|
Kpv | 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 Karpovite
Adamantine
Colour:
White, light blue
Streak:
white
Hardness:
2 on Mohs scale
Hardness:
VHN50=53 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
4.743 g/cm3 (Calculated)
Chemistry of Karpovite
Mindat Formula:
Tl2VO(SO4)2(H2O)
Crystallography of Karpovite
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Setting:
P21
Cell Parameters:
a = 4.6524(4) Å, b = 11.0757(9) Å, c = 9.3876(7) Å
γ = 98.353(2)°
γ = 98.353(2)°
Ratio:
a:b:c = 0.42 : 1 : 0.848
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Unit Cell V:
0.00 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Needle-like crystals.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.289 Å | (64) |
4.253 Å | (81) |
3.683 Å | (38) |
3.557 Å | (47) |
3.438 Å | (100) |
2.982 Å | (52) |
2.945 Å | (59) |
2.354 Å | (54) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
45a : [Sulfates, arsenates, selenates, antimonates] | |
45b : [Other oxidized fumarolic minerals] |
Type Occurrence of Karpovite
General Appearance of Type Material:
sheaf-like aggregates (Fig. 1) up to 0.4 mm x 0.2 mm x 0.2 mm in size, which examination by scanning electron microscopy (SEM) shows to be composed of crystals of prismatic habit.
Place of Conservation of Type Material:
Type material is deposited in the collections of the the Mineralogical Museum, Department of Mineralogy, St Petersburg State University, St Petersburg, Russia, specimen number 1/19543
Geological Setting of Type Material:
volcanic fumarole
Associated Minerals at Type Locality:
Synonyms of Karpovite
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Karpovite associated with Bobjonesite | (V4+O)(SO4) · 3H2O |
Related Minerals - Strunz-mindat Grouping
7.DB.05 | Aubertite | CuAl(SO4)2Cl · 14H2O |
7.DB.05 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O |
7.DB.05 | Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O |
7.DB.10 | Khademite | Al(SO4)F · 5H2O |
7.DB.10 | Rostite | Al(SO4)(OH) · 5H2O |
7.DB.15 | Jurbanite | Al(SO4)(OH) · 5H2O |
7.DB.20 | Minasragrite | (V4+O)(SO4) · 5H2O |
7.DB.20 | Orthominasragrite | (V4+O)(SO4) · 5H2O |
7.DB.20 | Anorthominasragrite | (V4+O)(SO4) · 5H2O |
7.DB.25 | Bobjonesite | (V4+O)(SO4) · 3H2O |
7.DB.30 | Amarantite | Fe3+2(SO4)2O · 7H2O |
7.DB.30 | Hohmannite | Fe3+2(SO4)2O · 8H2O |
7.DB.30 | Metahohmannite | Fe3+2(SO4)2O · 4H2O |
7.DB.35 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O |
7.DB.35 | Calciocopiapite | CaFe3+4(SO4)6(OH)2 · 20H2O |
7.DB.35 | Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
7.DB.35 | Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O |
7.DB.35 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O |
7.DB.35 | Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O |
7.DB.35 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O |
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 Karpovite
mindat.org URL:
https://www.mindat.org/min-43907.html
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References for Karpovite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No.17. Mineralogical Magazine, 77 (7) 2997-3005 doi:10.1180/minmag.2013.077.7.09
Siidra, Oleg I., Vergasova, Lidiya P., Kretser, Yuri L., Polekhovsky, Yuri S., Filatov, Stanislav K., Krivovichev, Sergey V. (2014) Unique thallium mineralization in the fumaroles of the Tolbachik volcano, Kamchatka Peninsula, Russia. II. Karpovite, Tl2VO(SO4)2(H2O) Mineralogical Magazine, 78 (7) 1699-1709 doi:10.1180/minmag.2014.078.7.13
Localities for Karpovite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Williams et al. (2013) +3 other references |
Quick NavTopAbout KarpoviteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia