Nabokoite
A valid IMA mineral species
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About Nabokoite
Sofia I. Naboko
Formula:
KCu7(SO4)5(Te4+O3)OCl
Colour:
Translucent yellowish-brown
Lustre:
Vitreous
Hardness:
2 - 2½
Specific Gravity:
4.18
Crystal System:
Tetragonal
Name:
Named in 1987 by V.I. Popova, V.A. Popov, N.S. Rudashevskiy, S.F. Glavatskikh, V.O. Polyakov, A.F. Bushmakin in honor of Sofia Ivanovna Naboko (Софьи Ивановны Набоко) (13 September 1909, St Petersburg, Russian Empire - 2005), Institute of Volcanology, Petropavlovsk-Kamchatskii, Russia. Naboko was an investigator of postvolcanic processes of Kamchatka and collected the first samples of the mineral. The mineral sophiite is also named for her.
Unique Identifiers
Mindat ID:
2823
Long-form identifier:
mindat:1:1:2823:9
GUID
(UUID V4):
(UUID V4):
3dc3464d-a119-4ad6-bc28-73c9bd5266d8
Classification of Nabokoite
Approved
Approval year:
1985
First published:
1987
7.BC.20
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
30.1.17.1
30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p>2:1
30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p>2:1
26.29
26 : Sulphates with Halide
26 : Sulphates with Halide
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 |
|---|---|---|
| Nab | 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 Nabokoite
Vitreous
Transparency:
Transparent
Colour:
Translucent yellowish-brown
Streak:
Yellow brown
Hardness:
2 - 2½ on Mohs scale
Cleavage:
Perfect
{001}
{001}
Density:
4.18(5) g/cm3 (Measured) 3.974 g/cm3 (Calculated)
Optical Data of Nabokoite
Type:
Uniaxial (-)
RI values:
nω = 1.778(3) nε = 1.773(3)
Max Birefringence:
δ = 0.005
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:
Very High
Chemical Properties of Nabokoite
Formula:
KCu7(SO4)5(Te4+O3)OCl
IMA Formula:
Cu7Te4+O4(SO4)5 · KCl
Crystallography of Nabokoite
Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P4/ncc
Setting:
P4/ncc
Cell Parameters:
a = 9.833(1) Å, c = 20.591(2) Å
Ratio:
a:c = 1 : 2.094
Unit Cell V:
1,990.90 ų (Calculated from Unit Cell)
Z:
4
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0014618 | Nabokoite | Pertlik F, Zemann J (1988) The crystal structure of nabokoite, Cu7TeO4(SO4)5*KCl: The first example of a Te(IV)O4 pyramid with exactly tetragonal symmetry Mineralogy and Petrology 38 291-298 | 1988 | Mount Tolbachik, Kamchatka, USSR | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.35 Å | (10) |
| 2.439 Å | (7) |
| 3.421 Å | (6) |
| 2.881 Å | (5) |
| 4.57 Å | (4) |
| 3.56 Å | (4) |
| 1.972 Å | (4) |
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 Nabokoite
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 87577.
Geological Setting of Type Material:
volcanic fumerole
Associated Minerals at Type Locality:
Reference:
Popova, V.I., Popov, V.A., Rudashevskiy, N.S., Glavatskikh, S.F., Polyakov, V.O., Bushmakin, A.F. (1987) Nabokoite Cu7TeO4(SO4)5·KCl and atlasovite Cu6Fe3+Bi3+O4(SO4)5·KCl. New minerals of volcanic exhalations. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 116(3): 358-367.
Synonyms of Nabokoite
Other Language Names for Nabokoite
Relationship of Nabokoite to other Species
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Nabokoite associated with Atlasovite | K(BiO)Cu6Fe3+(SO4)5O3Cl |
| 3 photos of Nabokoite associated with Tenorite | CuO |
| 1 photo of Nabokoite associated with Anglesite | PbSO4 |
| 1 photo of Nabokoite associated with Euchlorine | KNaCu3(SO4)3O |
Related Minerals - Strunz-mindat Grouping
| 7.BC. | Adranosite-(Fe) | (NH4)4NaFe3+2(SO4)4Cl(OH)2 |
| 7.BC. | Adranosite | (NH4)4NaAl2(SO4)4Cl(OH)2 |
| 7.BC. | D'Ansite-(Mn) | Na21Mn2+(SO4)10Cl3 |
| 7.BC. | Agaite | Pb3CuTeO5(OH)2(CO3) |
| 7.BC. | D'Ansite-(Fe) | Na21Fe2+(SO4)10Cl3 |
| 7.BC. | Acmonidesite | (NH4,K,Pb)8NaFe2+4(SO4)5Cl8 |
| 7.BC. | Backite | Pb2AlTeO6Cl |
| 7.BC. | Hagstromite | Pb8Cu2+(Te6+O6)2(CO3)Cl4 |
| 7.BC. | Wildcatite | CaFe3+Te6+O5(OH) |
| 7.BC. | Franksousaite | PbCu(Se6+O4)(OH)2 |
| 7.BC. | Zincochenite | Pb4Zn(OH)6(SO4)2 |
| 7.BC. | Viskontite | Pb5Cu2(SO4)3(SeO3)(OH)6 |
| 7.BC.05 | D'Ansite | Na21Mg(SO4)10Cl3 |
| 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 |
| 7.BC.10 | Ammonioalunite | (NH4)Al3(SO4)2(OH)6 |
| 7.BC.10 | Ammoniojarosite | (NH4)Fe3+3(SO4)2(OH)6 |
| 7.BC.10 | Argentojarosite | AgFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Beaverite-(Cu) | Pb(Fe3+2Cu)(SO4)2(OH)6 |
| 7.BC.10 | Dorallcharite | TlFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Huangite | Ca0.5Al3(SO4)2(OH)6 |
| 7.BC.10 | Hydroniumjarosite | (H3O)Fe3+3(SO4)2(OH)6 |
| 7.BC.10 | Jarosite | KFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Natroalunite-2c | (Na,Ca0.5,K)Al3(SO4)2(OH)6 |
| 7.BC.10 | Natroalunite | NaAl3(SO4)2(OH)6 |
| 7.BC.10 | Natrojarosite | NaFe3(SO4)2(OH)6 |
| 7.BC.10 | Osarizawaite | Pb(Al2Cu2+)(SO4)2(OH)6 |
| 7.BC.10 | Plumbojarosite | Pb0.5Fe3+3(SO4)2(OH)6 |
| 7.BC.10 | Schlossmacherite | (H3O)Al3(SO4)2(OH)6 |
| 7.BC.10 | Walthierite | Ba0.5Al3(SO4)2(OH)6 |
| 7.BC.10 | Beaverite-(Zn) | Pb(Fe3+2Zn)(SO4)2(OH)6 |
| 7.BC.15 | Ye'elimite | Ca4Al6(SO4)O12 |
| 7.BC.20 | Atlasovite | K(BiO)Cu6Fe3+(SO4)5O3Cl |
| 7.BC.20 | Puninite | Na2Cu3O(SO4)3 |
| 7.BC.25 | Chlorothionite | K2Cu(SO4)Cl2 |
| 7.BC.30 | Euchlorine | KNaCu3(SO4)3O |
| 7.BC.30 | Fedotovite | K2Cu3(SO4)3O |
| 7.BC.35 | Kamchatkite | KCu3(SO4)2OCl |
| 7.BC.40 | Piypite | K4Cu4O2(SO4)4 · (Na,Cu)Cl |
| 7.BC.45 | Klyuchevskite | K3Cu3(Fe3+,Al)(SO4)4O2 |
| 7.BC.45 | Alumoklyuchevskite | K3Cu3(Al,Fe3+)(SO4)4O2 |
| 7.BC.45 | Belousovite | KZn(SO4)Cl |
| 7.BC.47 | Müllerite | Pb2Fe3+(Te6+O6)Cl |
| 7.BC.50 | Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| 7.BC.50 | Elasmochloite | Na3Cu6BiO4(SO4)5 |
| 7.BC.52 | Eleomelanite | (K2Pb)Cu4O2(SO4)4 |
| 7.BC.55 | Wherryite | Pb7Cu2(SO4)4(SiO4)2(OH)2 |
| 7.BC.55 | Falgarite | K4(VO)3(SO4)5 |
| 7.BC.57 | Krasheninnikovite | KNa2CaMg(SO4)3F |
| 7.BC.60 | Mammothite | Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2 |
| 7.BC.60 | Wulffite | K3NaCu4O2(SO4)4 |
| 7.BC.60 | Parawulffite | K5Na3Cu8O4(SO4)8 |
| 7.BC.62 | Shuvalovite | K2(Ca2Na)(SO4)3F |
| 7.BC.65 | Linarite | PbCu(SO4)(OH)2 |
| 7.BC.65 | Schmiederite | Pb2Cu2(Se6+O4)(Se4+O3)(OH)4 |
| 7.BC.65 | Munakataite | Pb2Cu2(Se4+O3)(SO4)(OH)4 |
| 7.BC.65 | Therasiaite | (NH4)3KNa2Fe2+Fe3+(SO4)3Cl5 |
| 7.BC.65 | Saccoite | Ca2Mn3+2F(OH)8 · 0.5(SO4) |
| 7.BC.70 | Chenite | Pb4Cu(SO4)2(OH)6 |
| 7.BC.75 | Krivovichevite | Pb3Al(OH)6(SO4)(OH) |
| 7.BC.80 | Anhydrokainite | KMg(SO4)Cl |
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 Nabokoite
mindat.org URL:
https://www.mindat.org/min-2823.html
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References for Nabokoite
Reference List:
Localities for Nabokoite
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.
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Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia