Nishanbaevite
A valid IMA mineral species
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About Nishanbaevite
Formula:
KAl2O(AsO4)(SO4)
Colour:
Colourless in individuals and snow-white in aggregates.
Lustre:
Vitreous
Specific Gravity:
3.011 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor Russian mineralogist Tursun Prnazorovich Nishanbaev (Нишанбаев Турсун Прназорович) (1955–2017) a Head of the Natural History Museum of the Ilmen Natural Reserve, Miass, Russia.
Unique combination of elements. New structure type. In terms of represeting a natural Al oxyarsenate it is similar to wrightite (chemically most close to nishanbaevite), alumoedtollite, dmisokolovite, and urusovite.
The arsenate and sulfate anions in nishanbaevite are ordered, i.e, they do not substitute for each other in a common structural site.
Structure details:
* the complex heteropolyhedral sheet comprises zig-zag chains of Al-centred polyhedra;
* these polyhedra are alternating AlO5 trigonal bipyramids and AlO6 octahedra; they share edges;
* adjacent Al-bearing chains are linked via arsenate tetrahedra, thus forming heteropolyhedral double-layer;
* the (K,Na) site is in the interlayer space, between the sulfate tetrahedra.
The arsenate and sulfate anions in nishanbaevite are ordered, i.e, they do not substitute for each other in a common structural site.
Structure details:
* the complex heteropolyhedral sheet comprises zig-zag chains of Al-centred polyhedra;
* these polyhedra are alternating AlO5 trigonal bipyramids and AlO6 octahedra; they share edges;
* adjacent Al-bearing chains are linked via arsenate tetrahedra, thus forming heteropolyhedral double-layer;
* the (K,Na) site is in the interlayer space, between the sulfate tetrahedra.
Unique Identifiers
Mindat ID:
53676
Long-form identifier:
mindat:1:1:53676:9
GUID
(UUID V4):
(UUID V4):
4ed0052a-511f-41d8-bd7f-fd15fba63956
IMA Classification of Nishanbaevite
Approved
Approval year:
2019
First published:
2023
Type description reference:
Pekov, Igor V., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Belakovskiy, Dmitry I., Britvin, Sergey N., Agakhanov, Atali A., Turchkova, Anna G., Sidorov, Evgeny G., Kutyrev, Anton V., Blatov, Vladislav A., Pushcharovsky, Dmitry Y. (2023) Nishanbaevite, KAl2O(AsO4)(SO4), a new As/S-ordered arsenate-sulfate mineral of fumarolic origin. Mineralogy and Petrology, 117 (2) 247-257 doi:10.1007/s00710-022-00803-0
Classification of Nishanbaevite
8.BK.30
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
K : With medium-sized and large cations, (OH, etc.):RO4 = 2:1, 2.5:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
K : With medium-sized and large cations, (OH, etc.):RO4 = 2:1, 2.5:1
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 |
---|---|---|
Nbv | 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 Nishanbaevite
Vitreous
Transparency:
Transparent
Colour:
Colourless in individuals and snow-white in aggregates.
Streak:
White
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
none
Fracture:
Irregular/Uneven
Density:
3.011 g/cm3 (Calculated)
Optical Data of Nishanbaevite
Type:
Biaxial (-)
RI values:
nα = 1.552 nβ = 1.567 nγ = 1.567
Max Birefringence:
δ = 0.015
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:
Low
Pleochroism:
Non-pleochroic
Chemistry of Nishanbaevite
Mindat Formula:
KAl2O(AsO4)(SO4)
Chemical Analysis
Empirical formulas:
Sample ID | Empirical Formula |
---|---|
1 | (K0.57Na0.41Ca0.01)?0.99(Al1.99Fe3+0.02Cu0.01)?2.02(A0.95S0.95Si0.09P0.03)?2.02O9 |
Sample references:
ID | Locality | Reference | Notes |
---|---|---|---|
1 | Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia | by electron microprobe (mean of 7 analytical spots); empirical formula basis: 9 O apfu |
Crystallography of Nishanbaevite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcm
Setting:
Pbcm
Cell Parameters:
a = 15.505(5) Å, b = 7.257(2) Å, c = 6.606(2) Å
Ratio:
a:b:c = 2.137 : 1 : 0.91
Unit Cell V:
743.31 ų (Calculated from Unit Cell)
Z:
4
Twinning:
X-shaped interpenetration twins
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
15.49 Å | (100) |
6.56 Å | (30) |
4.653 Å | (29) |
3.881 Å | (54) |
3.625 Å | (27) |
3.289 Å | (52) |
3.113 Å | (29) |
3.038 Å | (51) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
45a : [Sulfates, arsenates, selenates, antimonates] |
Type Occurrence of Nishanbaevite
General Appearance of Type Material:
Long-prismatic or lamellar crystals, up to 0.03 mm, usually intergrown to form brush-like aggregates and crusts, up to 1.5 mm across.
Place of Conservation of Type Material:
Collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5379/1.
Geological Setting of Type Material:
Volcanic (de)sublimates.
Associated Minerals at Type Locality:
Synonyms of Nishanbaevite
Related Minerals - Strunz-mindat Grouping
8.BK.05 | Brazilianite | NaAl3(PO4)2(OH)4 |
8.BK.10 | Medenbachite | Bi2Fe3+Cu2+(AsO4)2O(OH)3 |
8.BK.10 | Neustädtelite | Bi2Fe3+(Fe3+,Co)(AsO4)2(O,OH)4 |
8.BK.10 | Cobaltneustädtelite | Bi2Fe3+(Co,Fe3+)(AsO4)2(O,OH)4 |
8.BK.15 | Curetonite | Ba(Al,Ti)(PO4)(OH,O)F |
8.BK.20 | Heyite | Pb5Fe2+2(VO4)2O4 |
8.BK.25 | Jamesite | Pb2Zn(Fe2+,Zn)2Fe3+4(AsO4)4(OH)10 |
8.BK.25 | Lulzacite | Sr2Fe2+(Fe2+,Mg)2Al4(PO4)4(OH)10 |
8.BK.35 | Lehmannite | Na18Cu12TiO8(AsO4)8FCl5 |
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 Nishanbaevite
mindat.org URL:
https://www.mindat.org/min-53676.html
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References for Nishanbaevite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2020) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) - Newsletter 52. European Journal of Mineralogy, 32 (1) 1-11 doi:10.5194/ejm-32-1-2020
Pekov, Igor V., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Belakovskiy, Dmitry I., Britvin, Sergey N., Agakhanov, Atali A., Turchkova, Anna G., Sidorov, Evgeny G., Kutyrev, Anton V., Blatov, Vladislav A., Pushcharovsky, Dmitry Y. (2023) Nishanbaevite, KAl2O(AsO4)(SO4), a new As/S-ordered arsenate-sulfate mineral of fumarolic origin. Mineralogy and Petrology, 117 (2) 247-257 doi:10.1007/s00710-022-00803-0
Localities for Nishanbaevite
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).
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.
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2019) CNMNC Newsletter No 50, New minerals and nomenclature modifications approved in 2019. Mineralogical Magazine, 83 (4) 615-620 doi:10.1180/mgm.2019.46 Pekov, Igor V., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Belakovskiy, Dmitry I., Britvin, Sergey N., Agakhanov, Atali A., Turchkova, Anna G., Sidorov, Evgeny G., Kutyrev, Anton V., Blatov, Vladislav A., Pushcharovsky, Dmitry Y. (2023) Nishanbaevite, KAl2O(AsO4)(SO4), a new As/S-ordered arsenate-sulfate mineral of fumarolic origin. Mineralogy and Petrology, 117 (2) 247-257 doi:10.1007/s00710-022-00803-0 |
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Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia