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Fedotovite

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About FedotoviteHide

05657710015802585637810.jpg
Sergei A. Fedotov
Formula:
K2Cu3(SO4)3O
Colour:
Emerald green to grass green
Lustre:
Vitreous, Silky
Hardness:
Specific Gravity:
3.205
Crystal System:
Monoclinic
Name:
Named in honor of Sergei Aleksandrovich Fedotov (Сергея Александровича Федотова) (19 March 1931, Leningra, USSR – 20 August 2019), volcanologist and seismologist, Director of the Institute of Volcanology, Petropavlovsk-Kamchatkskii, Russia.
Structurally related to euchlorine and puninite.


Classification of FedotoviteHide

Approved
Approval Year:
1986
First Published:
1988
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

Physical Properties of FedotoviteHide

Vitreous, Silky
Transparency:
Transparent
Colour:
Emerald green to grass green
Streak:
Pale grass green
Hardness:
2½ on Mohs scale
Cleavage:
Perfect
on {100}
Density:
3.205(3) g/cm3 (Measured)    3.09 g/cm3 (Calculated)

Optical Data of FedotoviteHide

Type:
Biaxial (+)
RI values:
nα = 1.577 nβ = 1.594 nγ = 1.633
2V:
Measured: 68° , Calculated: 70°
Max Birefringence:
δ = 0.056
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
very weak
Pleochroism:
Visible
Comments:
X= greenish blue
Y=Z= yellow green

Chemical Properties of FedotoviteHide

Formula:
K2Cu3(SO4)3O
IMA Formula:
K2Cu3O(SO4)3

Crystallography of FedotoviteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
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)
Z:
8
Morphology:
Crusts of pseudohexagonal flakes.

Geological EnvironmentHide

Geological Setting:
Sublimates around fumaroles.

Type Occurrence of FedotoviteHide

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

Other Language Names for FedotoviteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Fedotovite associated with ChalcocyaniteCuSO4
2 photos of Fedotovite associated with ChalcanthiteCuSO4 · 5H2O
1 photo of Fedotovite associated with DolerophaniteCu2(SO4)O

Related Minerals - Nickel-Strunz GroupingHide

7.BC.Adranosite-(Fe)(NH4)4NaFe3+2(SO4)4Cl(OH)2Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
7.BC.Adranosite(NH4)4NaAl2(SO4)4Cl(OH)2Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
7.BC.05D'AnsiteNa21Mg(SO4)10Cl3Iso.
7.BC.10AluniteKAl3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10Ammonioalunite(NH4)Al3(SO4)2(OH)6Trig.
7.BC.10Ammoniojarosite(NH4)Fe3+3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10ArgentojarositeAgFe3+3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10Beaverite-(Cu)Pb(Fe3+2Cu)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10DorallchariteTlFe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10HuangiteCa0.5Al3(SO4)2(OH)6Trig.
7.BC.10Hydroniumjarosite(H3O)Fe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10JarositeKFe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10NatroaluniteNaAl3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10NatrojarositeNaFe3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10PlumbojarositePb0.5Fe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10Schlossmacherite(H3O)Al3(SO4)2(OH)6Trig.
7.BC.10WalthieriteBa0.5Al3(SO4)2(OH)6Trig.
7.BC.10Beaverite-(Zn)Pb(Fe3+2Zn)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.15Ye'elimiteCa4Al6(SO4)O12Iso.
7.BC.20AtlasoviteK(BiO)Cu6Fe3+(SO4)5O3ClTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
7.BC.20NabokoiteKCu7(SO4)5(Te4+O3)OClTet.
7.BC.25ChlorothioniteK2Cu(SO4)Cl2Orth. mmm (2/m 2/m 2/m) : Pnma
7.BC.30EuchlorineKNaCu3(SO4)3OMon.
7.BC.35KamchatkiteKCu3(SO4)2OClOrth. mmm (2/m 2/m 2/m) : Pnma
7.BC.40PiypiteK4Cu4O2(SO4)4 · (Na,Cu)ClTet.
7.BC.45KlyuchevskiteK3Cu3(Fe3+,Al)(SO4)4O2Mon.
7.BC.45AlumoklyuchevskiteK3Cu3(Al,Fe3+)(SO4)4O2Tric. 1 : P1
7.BC.50CaledonitePb5Cu2(SO4)3(CO3)(OH)6Orth. mm2 : Pmn21
7.BC.55WherryitePb7Cu2(SO4)4(SiO4)2(OH)2Mon. 2/m : B2/m
7.BC.60MammothitePb6Cu4AlSb5+O2(OH)16Cl4(SO4)2Mon. 2 : B2
7.BC.65LinaritePbCu(SO4)(OH)2Mon. 2/m : P21/m
7.BC.65SchmiederitePb2Cu2(Se6+O4)(Se4+O3)(OH)4Mon.
7.BC.65MunakataitePb2Cu2(Se4+O3)(SO4)(OH)4Mon. 2/m : P21/m
7.BC.70ChenitePb4Cu(SO4)2(OH)6Tric. 1 : P1
7.BC.75KrivovichevitePb3Al(OH)6(SO4)(OH)Trig. 3m : R3c
7.BC.80AnhydrokainiteKMg(SO4)Cl

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

25.2.1ChalcocyaniteCuSO4Orth. mmm (2/m 2/m 2/m)
25.2.2BonattiteCuSO4 · 3H2OMon.
25.2.3ChalcanthiteCuSO4 · 5H2OTric. 1 : P1
25.2.4BoothiteCuSO4 · 7H2OMon.
25.2.5DolerophaniteCu2(SO4)OMon. 2/m : B2/m
25.2.6AntleriteCu3(SO4)(OH)4Orth. mmm (2/m 2/m 2/m)
25.2.7BrochantiteCu4(SO4)(OH)6Mon. 2/m : P21/b
25.2.8PosnjakiteCu4(SO4)(OH)6 · H2OMon. m : Pm
25.2.9LangiteCu4(SO4)(OH)6 · 2H2OMon. m
25.2.10WroewolfeiteCu4(SO4)(OH)6 · 2H2OMon. m : Pm
25.2.11KröhnkiteNa2Cu(SO4)2 · 2H2OMon. 2/m : P21/b
25.2.12NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
25.2.13PiypiteK4Cu4O2(SO4)4 · (Na,Cu)ClTet.
25.2.15CyanochroiteK2Cu(SO4)2 · 6H2OMon. 2/m
25.2.16EuchlorineKNaCu3(SO4)3OMon.
25.2.17DevillineCaCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b
25.2.18LeightoniteK2Ca2Cu(SO4)4 · 2H2OTric.
25.2.19ChalcoalumiteCuAl4(SO4)(OH)12 · 3H2OMon. 2 : P21
25.2.20CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2OMon. 2/m : B2/m
25.2.21WoodwarditeCu1-xAlx(OH)2(SO4)x/2 · nH2OTrig. 3m (3 2/m) : R3m
25.2.22CampigliaiteMn2+Cu4(SO4)2(OH)6 · 4H2OMon.
25.2.23GuilditeCuFe3+(SO4)2(OH) · 4H2OMon. 2/m : P21/m
25.2.24RansomiteCuFe2(SO4)4 · 6H2OMon. 2/m : P21/b
25.2.26KlyuchevskiteK3Cu3(Fe3+,Al)(SO4)4O2Mon.
25.2.27Poitevinite(Cu,Fe)SO4 · H2OTric.
25.2.28ArgentojarositeAgFe3+3(SO4)2(OH)6Trig. 3m : R3m

Other InformationHide

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.

References for FedotoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.
Jambor, J.L., Grew, E.S. (1990) New mineral names. American Mineralogist: 75: 240-246.
Starova, G.L., Filatov, S.K., Fundamenskii, V.S., Vergasova, L.P. (1991) The crystal structure of fedotovite, K2Cu3O(SO4)3. Mineralogical Magazine: 55: 613-616.
Transactions of the USSR Academy of Sciences, Earth Science Sections: 299: 196-199.
Siidra, O.I., Nazarchuk, E.V., Zaitsev, A.N., Lukina, E.A., Avdontseva, E.Y., Vergasova, L.P., Vlasenko, N.S., Filatov, S.K., Turner, R., Karpov, G.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: 499-510, 1089.

Internet Links for FedotoviteHide

Localities for FedotoviteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Kamchatka Krai
    • Tolbachik volcano
DAN-SSSR,(1988) 229, 961-964; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
        • Northern Breakthrough (North Breach)
Pekov, I. V., Zubkova, N. V., Zelenski, M. E., Yapaskurt, V. O., Polekhovsky, Y. S., Fadeeva, O. A., & Pushcharovsky, D. Y. (2013). Yaroshevskite, Cu9O2 (VO4) 4Cl2, a new mineral from the Tolbachik volcano, Kamchatka, Russia. Mineralogical Magazine, 77(1), 107-116.
Pekov, I.V., Zubkova, N.V., Agakhanov, A.A., Pushcharovsky, D.Yu., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G., Britvin, S.N. (2018): Cryptochalcite, K2Cu5O(SO4)5, and cesiodymite, CsKCu5O(SO4)5, two new isotypic minerals and the K-Cs isomorphism in this solid-solution series. European Journal of Mineralogy, 30: 593-607
Bykova E Y, Berlepsch P, Kartashov P M, Brugger J, Armbruster T, Criddle A J (1998) Vergasovaite Cu3O[(Mo,S)O4][SO4], a new copper-oxy-molybdate-sulfate from Kamchatka, Schweizerische Mineralogische und Petrographische Mitteilungen, 78, 479-488
Zelenski, M.E., Zubkova, N.V., Pekov, I.V., Polekhovsky, Yu.S. & Pushcharovsky, D.Yu. (2012): Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy, 24, 749-757.
USA
 
  • Nevada
    • Churchill Co.
      • Table Mountain Mining District
        • Cottonwood Canyon
          • Bolivia
NBMG Spec. Pub. 31 Minerals of Nevada
 
Mineral and/or Locality  
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