Kononovite
A valid IMA mineral species
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About Kononovite
Oleg Vasilievich Kononov
Formula:
NaMg(SO4)F
Colour:
White
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
2.91
Crystal System:
Monoclinic
Member of:
Name:
Named in honour of the Russian mineralogist Oleg V. Kononov (born 1932), Moscow State University.
Isostructural with phosphates and arsenates of the tilasite (durangite) group, and with silicates of the titanite group. The first sulphate member of the tilasite group. Chemically quite similar to krasheninnikovite.
Supergene alteration of kononovite may lead to the formation of uklonskovite.
Crystallographic data (space group) is set basing on similarity to the synthetic analogue, that has almost identical PXRD pattern.
Supergene alteration of kononovite may lead to the formation of uklonskovite.
Crystallographic data (space group) is set basing on similarity to the synthetic analogue, that has almost identical PXRD pattern.
Unique Identifiers
Mindat ID:
46063
Long-form identifier:
mindat:1:1:46063:3
IMA Classification of Kononovite
Approved
IMA Formula:
NaMg(S6+O4)F
Approval year:
2013
First published:
2015
Type description reference:
Pekov, Igor V., Krzhizhanovskaya, Maria G., Yapaskurt, Vasiliy O., Belakovskiy, Dmitry I., Chukanov, Nikita V., Lykova, Inna S., Sidorov, Evgeny G. (2015) Kononovite, NaMg(SO4)F, a new mineral from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. European Journal of Mineralogy, 27 (4) 575-580 doi:10.1127/ejm/2015/0027-2457
Classification of Kononovite
8.BH.10
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
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 |
|---|---|---|
| Knv | 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 Kononovite
Vitreous
Transparency:
Transparent, Translucent
Colour:
White
Comment:
transparent in tiny grains but translucent in blocky crystals
Streak:
White
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
one direction of imperfect cleavage is observed.
one direction of imperfect cleavage is observed.
Comment:
somewhat plastic
Density:
2.91 g/cm3 (Measured) 2.945 g/cm3 (Calculated)
Optical Data of Kononovite
Type:
Biaxial (+)
RI values:
nα = 1.488(2) nβ = 1.491(2) nγ = 1.496(2)
2V:
Measured: 75° (5)
Max. Birefringence:
δ = 0.008
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Chemistry of Kononovite
Mindat Formula:
NaMg(SO4)F
Element Weights:
Crystallography of Kononovite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 6.662(2) Å, b = 8.584(3) Å, c = 7.035(2) Å
β = 114.06(3)°
β = 114.06(3)°
Ratio:
a:b:c = 0.776 : 1 : 0.82
Unit Cell V:
367.4 ų
Z:
4
Morphology:
Prismatic to thick tabular crystals. Forming clusters or crusts.
Comment:
Space group by analogy to the synthetic analogue
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.766 Å | (38) |
| 3.567 Å | (33) |
| 3.233 Å | (82) |
| 3.210 Å | (55) |
| 3.041 Å | (100) |
| 2.589 Å | (53) |
| 2.571 Å | (38) |
| 2.269 Å | (33) |
Reference:
Pekov, Igor V., Krzhizhanovskaya, Maria G., Yapaskurt, Vasiliy O., Belakovskiy, Dmitry I., Chukanov, Nikita V., Lykova, Inna S., Sidorov, Evgeny G. (2015) Kononovite, NaMg(SO4)F, a new mineral from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. European Journal of Mineralogy, 27 (4) 575-580 doi:10.1127/ejm/2015/0027-2457
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 Kononovite
General Appearance of Type Material:
As prismatic to thick tabular crystals up to 0.04 × 0.06 × 0.1 mm, forming clusters or interrupted crusts up to several cm2.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4452/1
Geological Setting of Type Material:
a fumarole
Associated Minerals at Type Locality:
Reference:
Pekov, Igor V., Krzhizhanovskaya, Maria G., Yapaskurt, Vasiliy O., Belakovskiy, Dmitry I., Chukanov, Nikita V., Lykova, Inna S., Sidorov, Evgeny G. (2015) Kononovite, NaMg(SO4)F, a new mineral from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. European Journal of Mineralogy, 27 (4) 575-580 doi:10.1127/ejm/2015/0027-2457
Synonyms of Kononovite
Other Language Names for Kononovite
Dutch:Kononoviet
German:Kononovit
Relationship of Kononovite to other Species
Member of:
Other Members of Tilasite Group:
| Arsenatrotitanite | NaTi(AsO4)O | Mon. 2/m : B2/b |
| Durangite | NaAl(AsO4)F | Mon. 2/m : B2/b |
| Isokite | CaMg(PO4)F | Mon. 2/m : B2/b |
| Lacroixite | NaAl(PO4)F | Mon. 2/m : B2/b |
| Maxwellite | NaFe3+(AsO4)F | Mon. 2/m : P2/m |
| Panasqueiraite | CaMg(PO4)(OH) | Mon. |
| Reznitskyite | CaMg(VO4)F | Mon. 2/m : B2/b |
| Tilasite | CaMg(AsO4)F | Mon. |
Related Minerals - Strunz-mindat Grouping
| 8.BH. | Peterchinite | Zn3Zn2(OH)6As[O3(OH)3] |
| 8.BH. | Reznitskyite | CaMg(VO4)F |
| 8.BH. | Plumbogottlobite | PbMg(VO4)(OH) |
| 8.BH. | Cuprozheshengite | Pb4CuZn2(AsO4)2(PO4)2(OH)2 |
| 8.BH. | Zheshengite | Pb4ZnZn2(AsO4)2(PO4)2(OH)2 |
| 8.BH. | Crimsonite | PbFe3+2(PO4)2(OH)2 |
| 8.BH.05 | Thadeuite | Ca(Mg,Fe2+)3(PO4)2(OH,F)2 |
| 8.BH.10 | Panasqueiraite | CaMg(PO4)(OH) |
| 8.BH.10 | Isokite | CaMg(PO4)F |
| 8.BH.10 | Lacroixite | NaAl(PO4)F |
| 8.BH.10 | Arsenatrotitanite | NaTi(AsO4)O |
| 8.BH.10 | Maxwellite | NaFe3+(AsO4)F |
| 8.BH.10 | Durangite | NaAl(AsO4)F |
| 8.BH.15 | Drugmanite | Pb2Fe3+(PO4)(PO3OH)(OH)2 |
| 8.BH.20 | Nigelcookite | PbFe2+2V3+2(PO4)3(OH)3 |
| 8.BH.20 | Plumbojohntomaite | PbFe2+2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Cirrolite | Ca3Al2(PO4)3(OH)3 (?) |
| 8.BH.20 | Penikisite | Ba(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3 |
| 8.BH.20 | Perloffite | Ba(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Bjarebyite Group | |
| 8.BH.20 | Strontioperloffite | SrMn2+2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Plumboperloffite | PbMn2+2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Johntomaite | BaFe2+2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Bjarebyite | (Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3 |
| 8.BH.20 | Kulanite | Ba(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3 |
| 8.BH.25 | Bertossaite | Li2CaAl4(PO4)4(OH)4 |
| 8.BH.25 | Natropalermoite | Na2SrAl4(PO4)4(OH)4 |
| 8.BH.25 | Palermoite | Li2SrAl4(PO4)4(OH)4 |
| 8.BH.30 | Sewardite | CaFe3+2(AsO4)2(OH)2 |
| 8.BH.30 | Carminite | PbFe3+2(AsO4)2(OH)2 |
| 8.BH.35 | Adelite | CaMg(AsO4)(OH) |
| 8.BH.35 | Duftite | PbCu(AsO4)(OH) |
| 8.BH.35 | Cobaltaustinite | CaCo(AsO4)(OH) |
| 8.BH.35 | Nickelaustinite | CaNi(AsO4)(OH) |
| 8.BH.35 | Gabrielsonite | PbFe3+(As3+O3)O |
| 8.BH.35 | Conichalcite | CaCu(AsO4)(OH) |
| 8.BH.35 | Arsendescloizite | PbZn(AsO4)(OH) |
| 8.BH.35 | 'Duftite-alpha' | PbCu(AsO4)(OH) |
| 8.BH.35 | Gottlobite | CaMg(VO4)(OH) |
| 8.BH.35 | Austinite | CaZn(AsO4)(OH) |
| 8.BH.35 | Hermannroseite | CaCu(PO4)(OH) |
| 8.BH.35 | Tangeite | CaCu(VO4)(OH) |
| 8.BH.40 | Čechite | PbFe2+(VO4)(OH) |
| 8.BH.40 | Khorixasite | (Bi0.67◻0.33)Cu(VO4)(OH) |
| 8.BH.40 | Mottramite | PbCu(VO4)(OH) |
| 8.BH.40 | Descloizite | PbZn(VO4)(OH) |
| 8.BH.40 | Pyrobelonite | PbMn2+(VO4)(OH) |
| 8.BH.45 | Bayldonite | PbCu3(AsO4)2(OH)2 |
| 8.BH.45 | Vésigniéite | BaCu3(VO4)2(OH)2 |
| 8.BH.50 | Paganoite | NiBi(AsO4)O |
| 8.BH.55 | Jagowerite | BaAl2(PO4)2(OH)2 |
| 8.BH.55 | Harrisonite | Ca(Fe2+,Mg)6(PO4)2(SiO4)2 |
| 8.BH.60 | Attakolite | CaMn2+Al4(SiO3OH)(PO4)3(OH)4 |
| 8.BH.65 | Leningradite | PbCu3(VO4)2Cl |
| 8.BH.70 | Katiarsite | KTiO(AsO4) |
| 8.BH.70 | Yurgensonite | K2SnTiO2(AsO4)2 |
| 8.BH.75 | Melanarsite | K3Cu7Fe3+O4(AsO4)4 |
| 8.BH.80 | Evseevite | Na2Mg(AsO4)F |
| 8.BH.80 | Moraskoite | Na2Mg(PO4)F |
| 8.BH.85 | Piccoliite | NaCaMn3+2(AsO4)2O(OH) |
Other Information
Notes:
Decomposes and partially dissolves in H2O at room temperature during several hours. In humid air the mineral slowly alters with the formation of uklonskovite NaMg(SO4)F·2H2O.
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 Kononovite
mindat.org URL:
https://www.mindat.org/min-46063.html
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References for Kononovite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) New minerals and nomenclature modifications approved in 2014, CNMNC Newsletter No 19. Mineralogical Magazine, 78 (1) 165-170 doi:10.1180/minmag.2014.078.1.12
Pekov, Igor V., Krzhizhanovskaya, Maria G., Yapaskurt, Vasiliy O., Belakovskiy, Dmitry I., Chukanov, Nikita V., Lykova, Inna S., Sidorov, Evgeny G. (2015) Kononovite, NaMg(SO4)F, a new mineral from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. European Journal of Mineralogy, 27 (4) 575-580 doi:10.1127/ejm/2015/0027-2457
Localities for Kononovite
Showing 1 localities.
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.
Russia (TL) | |
| Williams et al. (2014) +2 other references |
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Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia