Fedotovite (original) (raw)
A valid IMA mineral species
About FedotoviteHide
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Colour:
Emerald green to grass green
Crystal System:
Monoclinic
Name:
Named in honor of Sergei Aleksandrovich Fedotov (Сергей Александрович Федотов) (19 March 1931, Leningra, USSR – 20 August 2019), volcanologist and seismologist, Director of the Institute of Volcanology, Petropavlovsk-Kamchatkskii, Russia.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1469:0
adb61431-cdf6-4921-968d-8490b1dad9d8
IMA Classification of FedotoviteHide
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Type description reference:
Classification of FedotoviteHide
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7.BC.30
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
30.3.4.1
30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)5(XO4)3Zq
25.2.14
25 : Sulphates
2 : Sulphates of Cu and Ag
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Fdt | 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 FedotoviteHide
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Colour:
Emerald green to grass green
Density:
3.205(3) g/cm3 (Measured) 3.09 g/cm3 (Calculated)
Optical Data of FedotoviteHide
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RI values:
_n_α = 1.577 _n_β = 1.594 _n_γ = 1.633
2V:
Measured: 68° , Calculated: 70°
δ = 0.056
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Optical Extinction:
Z = b; Y ∧ c ≃ 0°.
Comments:
X = greenish blue; Y = Z = yellow green.
Comments:
Absorption: Z > Y.
Chemistry of FedotoviteHide
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Mindat Formula:
K2Cu3(SO4)3O
Crystallography of FedotoviteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 19.037(6) Å, b = 9.479(2) Å, c = 14.231(5) Å
β = 111.04°
Ratio:
a:b:c = 2.008 : 1 : 1.501
Unit Cell V:
2,396.80 ų (Calculated from Unit Cell)
Morphology:
Crusts of pseudohexagonal flakes.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014494 | Fedotovite | Starova G L, Filatov S K, Fundamensky V S, Vergasova L P (1991) The crystal structure of fedotovite, K2Cu3O(SO4)3 Mineralogical Magazine 55 613-616 |  |
1991 | Tolbachik fissure eruption, Kamchatka Peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.83 Å | (100) |
| 6.59 Å | (4) |
| 6.54 Å | (4) |
| 4.405 Å | (3) |
| 4.207 Å | (3) |
| 2.943 Å | (12) |
| 2.844 Å | (5) |
Comments:
Tolbachik volcano, Russia. Data from the type description.
Geological EnvironmentHide
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Geological Setting:
Sublimates around fumaroles.
Type Occurrence of FedotoviteHide
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General Appearance of Type Material:
Aggregates of poorly developed platy to micaceous crystals and fine-grained crusts 1 to 2 mm thick. Crystals are up to 5 mm long x 0.1-1 mm thick, flattened on {100} and irregular in outline. Rarely rectangular or pseudohexagonal.
Place of Conservation of Type Material:
Mining Museum, St. Petersburg, Russia, number 1890/1 (type).
Geological Setting of Type Material:
Associated Minerals at Type Locality:
Reference:
Vergasova, L.P., Filatov, S.K., Serafimova, Y.K., Starova, G.L. (1988) Fedotovite K2Cu3O(SO4)3 - a new mineral from volcanic sublimates. Doklady Akademii Nauk SSSR: 299: 961-964.
Synonyms of FedotoviteHide
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Other Language Names for FedotoviteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 7.BC. | Adranosite-(Fe) | (NH4)4NaFe3+2(SO4)4Cl(OH)2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_41/a c d |
|---|---|---|---|
| 7.BC. | Adranosite | (NH4)4NaAl2(SO4)4Cl(OH)2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_41/a c d |
| 7.BC. | D'Ansite-(Mn) | Na21Mn2+(SO4)10Cl3 | Iso. 43_m_ : I_43_d |
| 7.BC. | Agaite | Pb3CuTeO5(OH)2(CO3) | Orth. m _m_2 : P c _a_21 |
| 7.BC. | D'Ansite-(Fe) | Na21Fe2+(SO4)10Cl3 | Iso. 43_m_ : I_43_d |
| 7.BC. | Acmonidesite | (NH4,K,Pb)8NaFe2+4(SO4)5Cl8 | Orth. 222 : _C_2221 |
| 7.BC. | Backite | Pb2AlTeO6Cl | Trig. 32 : _P_312 |
| 7.BC. | Hagstromite | Pb8Cu2+(Te6+O6)2(CO3)Cl4 | Orth. m m m _(_2/_m_2/_m_2/m ) : I b a m |
| 7.BC. | Wildcatite | CaFe3+Te6+O5(OH) | Trig. 3_m_ _(_32/m ) : P_31_m |
| 7.BC. | Franksousaite | PbCu(Se6+O4)(OH)2 | Mon. 2/m : _P_21/m |
| 7.BC. | Zincochenite | Pb4Zn(OH)6(SO4)2 | Tric. 1 : _P_1 |
| 7.BC. | Viskontite | Pb5Cu2(SO4)3(SeO3)(OH)6 | Orth. m _m_2 : P m _n_21 |
| 7.BC. | Chromviskontite | Pb5Cu2(CrO4)3(SeO3)(OH)6 | Orth. m _m_2 : P m _n_21 |
| 7.BC.05 | D'Ansite | Na21Mg(SO4)10Cl3 | Iso. 43_m_ : I_43_m |
| 7.BC.07 | Apatelite | Fe3(SO4)2(OH)5 · 0.5H2O | |
| 7.BC.07 | Unnamed (Ba-Fe Vanadate) | Ba, Fe, V, O, H | |
| 7.BC.10 | Alunite | KAl3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Ammonioalunite | (NH4)Al3(SO4)2(OH)6 | Trig. |
| 7.BC.10 | Ammoniojarosite | (NH4)Fe3+3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Argentojarosite | AgFe3+3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Beaverite-(Cu) | Pb(Fe3+2Cu)(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Dorallcharite | TlFe3+3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Huangite | Ca0.5Al3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Hydroniumjarosite | (H3O)Fe3+3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Jarosite | KFe3+3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Natroalunite-2c | (Na,Ca0.5,K)Al3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Natroalunite | NaAl3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Natrojarosite | NaFe3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Osarizawaite | Pb(Al2Cu2+)(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Plumbojarosite | Pb0.5Fe3+3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Schlossmacherite | (H3O)Al3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Walthierite | Ba0.5Al3(SO4)2(OH)6 | Trig. |
| 7.BC.10 | Beaverite-(Zn) | Pb(Fe3+2Zn)(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Karlseifertite | Pb(Ga2Ge)(AsO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.15 | Ye'elimite | Ca4Al6(SO4)O12 | Iso. 432 : _I_4132 |
| 7.BC.20 | Atlasovite | K(BiO)Cu6Fe3+(SO4)5O3Cl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n c c |
| 7.BC.20 | Nabokoite | KCu7(SO4)5(Te4+O3)OCl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n c c |
| 7.BC.20 | Puninite | Na2Cu3O(SO4)3 | Mon. 2/m : _B_2/b |
| 7.BC.25 | Chlorothionite | K2Cu(SO4)Cl2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 7.BC.30 | Euchlorine | KNaCu3(SO4)3O | Mon. 2/m |
| 7.BC.35 | Kamchatkite | KCu3(SO4)2OCl | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 7.BC.40 | Piypite | K4Cu4O2(SO4)4 · (Na,Cu)Cl | Tet. 4 : _I_4 |
| 7.BC.45 | Klyuchevskite | K3Cu3(Fe3+,Al)(SO4)4O2 | Mon. 2 |
| 7.BC.45 | Alumoklyuchevskite | K3Cu3(Al,Fe3+)(SO4)4O2 | Tric. 1 : _P_1 |
| 7.BC.45 | Belousovite | KZn(SO4)Cl | Mon. 2/m : _P_21/b |
| 7.BC.47 | Müllerite | Pb2Fe3+(Te6+O6)Cl | Trig. 32 : _P_3112 |
| 7.BC.50 | Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 | Orth. m _m_2 : P m _n_21 |
| 7.BC.50 | Elasmochloite | Na3Cu6BiO4(SO4)5 | Mon. 2/m |
| 7.BC.52 | Eleomelanite | (K2Pb)Cu4O2(SO4)4 | Mon. 2/m |
| 7.BC.55 | Wherryite | Pb7Cu2(SO4)4(SiO4)2(OH)2 | Mon. 2/m : _B_2/m |
| 7.BC.55 | Falgarite | K4(VO)3(SO4)5 | Mon. 2/m : _B_2/b |
| 7.BC.57 | Krasheninnikovite | KNa2CaMg(SO4)3F | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m c m |
| 7.BC.60 | Mammothite | Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2 | Mon. 2 : _B_2 |
| 7.BC.60 | Wulffite | K3NaCu4O2(SO4)4 | Orth. m _m_2 |
| 7.BC.60 | Parawulffite | K5Na3Cu8O4(SO4)8 | Mon. 2/m : _P_2/b |
| 7.BC.62 | Shuvalovite | K2(Ca2Na)(SO4)3F | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 7.BC.65 | Linarite | PbCu(SO4)(OH)2 | Mon. 2/m : _P_21/m |
| 7.BC.65 | Schmiederite | Pb2Cu2(Se6+O4)(Se4+O3)(OH)4 | Mon. 2/m : _P_21/m |
| 7.BC.65 | Munakataite | Pb2Cu2(Se4+O3)(SO4)(OH)4 | Mon. 2/m : _P_21/m |
| 7.BC.65 | Therasiaite | (NH4)3KNa2Fe2+Fe3+(SO4)3Cl5 | Mon. m : B b |
| 7.BC.65 | Saccoite | Ca2Mn3+2F(OH)8 · 0.5(SO4) | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n c c |
| 7.BC.70 | Chenite | Pb4Cu(SO4)2(OH)6 | Tric. 1 : _P_1 |
| 7.BC.75 | Krivovichevite | Pb3Al(OH)6(SO4)(OH) | Trig. 3_m_ : R_3_c |
| 7.BC.80 | Anhydrokainite | KMg(SO4)Cl |
Other InformationHide
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IR Spectrum:
IR spectrum shows features at 600 cm-1 and 1100 cm-1 due to (SO4)2- groups. An absence of features at 1600 and 3400-3600 cm-1 indicates that no water or hydroxyl is present.
Thermal Behaviour:
DTA curve shows two endothermic effects: one at 692°C with no weight loss (breakdown with formation of tenorite), and another at 715°C with a 20 wt% loss (desulfatization).
Special Storage/
Display Requirements:
Unstable in air.
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 FedotoviteHide
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References for FedotoviteHide
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Reference List:
Siidra, Oleg I., Nazarchuk, Evgenii V., Zaitsev, Anatoly N., Lukina, Evgeniya A., Avdontseva, Evgeniya Y., Vergasova, Lidiya P, Vlasenko, Natalia S., Filatov, Stanislav K., Turner, Rick, Karpov, Gennady A. (2017) Copper oxosulphates from fumaroles of Tolbachik volcano: puninite, Na2Cu3O(SO4)3 – a new mineral species and structure refinements of kamchatkite and alumoklyuchevskite. European Journal of Mineralogy, 29 (3) 499-510 doi:10.1127/ejm/2017/0029-2619
Localities for FedotoviteHide
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This 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.
Locality ListHide
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- 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.
| Russia (TL) | |
|---|---|
| Kamchatka Krai Milkovsky District Tolbachik Volcanic field ⓘ Great Fissure eruption (Main Fracture) (TL) | Vergasova et al. (1988) +1 other reference |
| Northern Breakthrough (North Breach) ⓘ Second scoria cone | Pekov et al. (2013) |
| ⓘ Arsenatnaya fumarole | Pekov et al. (2018) |
| ⓘ Treschina fumarole | Bykova et al. (1998) |
| ⓘ Yadovitaya fumarole | Zelenski et al. (2012) +1 other reference |
| Plosky Tolbachik Volcano ⓘ 2012-2013 Fissure Tolbachik Eruption site | Sharygin et al. (2018) |
| USA | |
| Nevada Churchill County Table Mountain Mining District Cottonwood Canyon Bolivia ⓘ Nickel mine (Bell Nickel; Cottonwood Canyon Nickel Mine; London and Liverpool Mines) | Castor et al. (2004) |