Evdokimovite
A valid IMA mineral species
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About Evdokimovite
Formula:
Tl4(VO)3(SO4)5(H2O)5
Colour:
Colorless
Lustre:
Adamantine
Hardness:
2½
Specific Gravity:
4.20 (Calculated)
Crystal System:
Monoclinic
Name:
in honor of Professor Mikhail Dmitrievich Evdokimov (1940–2010), formerly of the Department of Mineralogy, St Petersburg State University, for his contributions to mineralogy and petrology, and especially for teaching mineralogy to several generations of students at the University.
This page provides mineralogical data about Evdokimovite.
Unique Identifiers
Mindat ID:
43909
Long-form identifier:
mindat:1:1:43909:5
IMA Classification of Evdokimovite
Approved
IMA Formula:
Tl1+4(V4+O)3(S6+O4)5·5H2O
Approval year:
2013
First published:
2014
Type description reference:
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 Tolbachik volcano, Kamchatka Peninsula, Russia. III. Evdokimovite, Tl4(VO)3(SO4)5(H2O)5. Mineralogical Magazine, 78 (7) 1711-1724 doi:10.1180/minmag.2014.078.7.14
Classification of Evdokimovite
7.DF.60
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
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 for Standard |
|---|---|---|
| Evd | 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 Evdokimovite
Adamantine
Colour:
Colorless
Streak:
White
Hardness:
2½ on Mohs scale
Hardness:
VHN100=92 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Fracture:
Conchoidal
Density:
4.20 g/cm3 (Calculated)
Optical Data of Evdokimovite
Anisotropism:
Any anisotropy is masked by abundant internal reflections.
Bireflectance:
Weak
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 7.23% | 7.42% |
| 420nm | 7.15% | 7.34% |
| 440nm | 7.08% | 7.26% |
| 460nm | 6.99% | 7.19% |
| 470nm | 6.95% | 7.16% |
| 480nm | 6.91% | 7.12% |
| 500nm | 6.84% | 7.04% |
| 520nm | 6.78% | 6.95% |
| 540nm | 6.72% | 6.89% |
| 546nm | 6.70% | 6.87% |
| 560nm | 6.66% | 6.83% |
| 580nm | 6.60% | 6.78% |
| 589nm | 6.58% | 6.75% |
| 600nm | 6.54% | 6.71% |
| 620nm | 6.47% | 6.65% |
| 640nm | 6.43% | 6.60% |
| 650nm | 6.40% | 6.58% |
| 660nm | 6.38% | 6.56% |
| 680nm | 6.34% | 6.52% |
| 700nm | 6.29% | 6.47% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 7.42%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Light gray with beige tints
Internal Reflections:
Abundant, greenish gray
Pleochroism:
Non-pleochroic
Chemistry of Evdokimovite
Mindat Formula:
Tl4(VO)3(SO4)5(H2O)5
Element Weights:
Crystallography of Evdokimovite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 6.2958(14) Å, b = 10.110(2) Å, c = 39.426(11) Å
β = 90.347(6)°
β = 90.347(6)°
Ratio:
a:b:c = 0.623 : 1 : 3.9
Unit Cell V:
2,509.44 ų (Calculated from Unit Cell)
Z:
4
Twinning:
None observed
Comment:
Space Group: P21/n.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.793 Å | (57) |
| 8.014 Å | (100) |
| 6.580 Å | (26) |
| 4.011 Å | (19) |
| 3.621 Å | (29) |
| 3.522 Å | (44) |
| 3.010 Å | (19) |
| 2.974 Å | (21) |
Reference:
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 Tolbachik volcano, Kamchatka Peninsula, Russia. III. Evdokimovite, Tl4(VO)3(SO4)5(H2O)5. Mineralogical Magazine, 78 (7) 1711-1724 doi:10.1180/minmag.2014.078.7.14
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 Evdokimovite
General Appearance of Type Material:
Thin, colourless needles up to 0.09 mm long.
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 1/19542.
Geological Setting of Type Material:
Fumeroles.
Associated Minerals at Type Locality:
Reference:
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 Tolbachik volcano, Kamchatka Peninsula, Russia. III. Evdokimovite, Tl4(VO)3(SO4)5(H2O)5. Mineralogical Magazine, 78 (7) 1711-1724 doi:10.1180/minmag.2014.078.7.14
Synonyms of Evdokimovite
Other Language Names for Evdokimovite
Dutch:Evdokimoviet
German:Evdokimovit
Related Minerals - Strunz-mindat Grouping
| 7.DF. | Siligiite | [Pb(H2O)5(SO4)][Zn9(OH)18] |
| 7.DF. | Alcaparrosaite | K3Ti4+Fe3+(SO4)4O(H2O)2 |
| 7.DF. | Flaggite | Pb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O) |
| 7.DF. | Bairdite | Pb2Cu2+4Te6+2O10(OH)2(SO4) · H2O |
| 7.DF. | Tzeferisite | CaZn8(SO4)2(OH)12Cl2(H2O)9 |
| 7.DF. | Cherokeeite | [Pb2Zn(OH)4](SO4) · H2O |
| 7.DF. | Ammoniomathesiusite | (NH4)5(UO2)4(SO4)4(VO5) · 4H2O |
| 7.DF. | Sigogglinite | [Pb6Zn(OH)8]2(SO4)6 · (H2O)8-x |
| 7.DF.X | Blueridgeite | [Pb8Zn3Cu2+(OH)16](SO4)2(S2O3)2 · 2H2O |
| 7.DF. | Erssonite | Mg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2O |
| 7.DF. | Poellmannite | Ca6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
| 7.DF. | Carlsonite | (NH4)5Fe3+3O(SO4)6 · 7H2O |
| 7.DF. | Cuprocherokeeite | [Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2O |
| 7.DF. | Haywoodite | [Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3] |
| 7.DF. | Chromschieffelinite | Pb10Te6+6O20(OH)14(CrO4)(H2O)5 |
| 7.DF.05 | Uklonskovite | NaMg(SO4)F · 2H2O |
| 7.DF.10 | Kainite | KMg(SO4)Cl · 3H2O |
| 7.DF.10 | Kaliochalcite | KCu2(SO4)2[(OH)(H2O)] |
| 7.DF.15 | Natrochalcite | NaCu2(SO4)2(OH) · 2H2O |
| 7.DF.17 | Genplesite | Ca3Sn(SO4)2(OH)6 · 3H2O |
| 7.DF.17 | 'Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate)' | Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O |
| 7.DF.20 | Sideronatrite | Na2Fe(SO4)2(OH) · 3H2O |
| 7.DF.20 | Metasideronatrite | Na2Fe(SO4)2(OH) · H2O |
| 7.DF.25 | Fleischerite | Pb3Ge(SO4)2(OH)6 · 3H2O |
| 7.DF.25 | Mallestigite | Pb3Sb5+(SO4)(AsO4)(OH)6 · 3H2O |
| 7.DF.25 | Schaurteite | Ca3Ge(SO4)2(OH)6 · 4H2O |
| 7.DF.25 | Despujolsite | Ca3Mn4+(SO4)2(OH)6 · 3H2O |
| 7.DF.30 | Slavíkite | (H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2O |
| 7.DF.35 | Metavoltine | K2Na6Fe2+Fe3+6O2(SO4)12 · 18H2O |
| 7.DF.40 | Lannonite | Mg2Ca4Al4(SO4)8F8 · 24H2O |
| 7.DF.40 | Vlodavetsite | AlCa2(SO4)2F2Cl · 4H2O |
| 7.DF.45 | Peretaite | Ca(SbO)4(SO4)2(OH)2 · 2H2O |
| 7.DF.50 | Gordaite | NaZn4(SO4)(OH)6Cl · 6H2O |
| 7.DF.50 | Calamaite | Na2TiO(SO4)2 · 2H2O |
| 7.DF.52 | Huizingite-(Al) | [(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6] |
| 7.DF.52 | Scordariite | K8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2O |
| 7.DF.55 | Clairite | (NH4)2Fe3(SO4)4(OH)3 · 3H2O |
| 7.DF.55 | Giacovazzoite | K5Fe3+3O(SO4)6 · 10H2O |
| 7.DF.57 | Magnanelliite | K3Fe3+2(SO4)4(OH)(H2O)2 |
| 7.DF.60 | Arzrunite | Cu4Pb2(SO4)(OH)4Cl6 · 2H2O (?) |
| 7.DF.62 | Bridgesite-(Ce) | CaCe2Cu6(SO4)4(OH)12 · 8H2O |
| 7.DF.65 | Elyite | Pb4Cu(SO4)O2(OH)4 · H2O |
| 7.DF.70 | Yecoraite | Fe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O |
| 7.DF.70 | Lautenthalite | PbCu4(SO4)2(OH)6 · 3H2O |
| 7.DF.75 | Riomarinaite | Bi(SO4)(OH) · H2O |
| 7.DF.80 | Dukeite | Bi3+24Cr6+8O57(OH)6 · 3H2O |
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 Evdokimovite
mindat.org URL:
https://www.mindat.org/min-43909.html
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References for Evdokimovite
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 Tolbachik volcano, Kamchatka Peninsula, Russia. III. Evdokimovite, Tl4(VO)3(SO4)5(H2O)5. Mineralogical Magazine, 78 (7) 1711-1724 doi:10.1180/minmag.2014.078.7.14
Localities for Evdokimovite
Showing 1 localities.
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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.
Russia (TL) | |
| Siidra et al. (2014) |
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Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia