Ankinovichite
A valid IMA mineral species
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About Ankinovichite
Ekaterina A. and Stepan G. Ankinovich
Formula:
(Ni,Zn)Al4(V5+O3)2(OH)12 · 2.5H2O
Colour:
colourless to pale bluish green
Lustre:
Vitreous
Hardness:
2½ - 3
Specific Gravity:
2.48
Crystal System:
Monoclinic
Name:
Name in honor of Ekaterina Aleksandrovna Ankinovich (Екатерина Александровна Анкинович) (24 November (7 December) 1911, Small Yalchiki, Tetyushsky uyezd, Kazan Province, Russian empire - 10 July 1991, Alma-Ata, Kazakh SSR, USSR) and Stepan Gerasimovich Ankinovich (Степан Герасимович Анкинович) (22 October (4 November) 1912, Kashino, Mogilev Province, Russian empire - 16 June 1985, Alma-Ata, Kazakh SSR, USSR), husband and wife mineralogists and geologists, for their work on Asian vanadium deposits.
Unique Identifiers
Mindat ID:
11516
Long-form identifier:
mindat:1:1:11516:8
IMA Classification of Ankinovichite
Approved
IMA Formula:
Ni2+Al4(V5+O3)2(OH)12·2H2O
Approval year:
2002
First published:
2004
Classification of Ankinovichite
8.FE.05
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
E : Ino-[4]-vanadates
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
E : Ino-[4]-vanadates
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 |
|---|---|---|
| Akv | 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 Ankinovichite
Vitreous
Transparency:
Transparent
Colour:
Colourless to pale bluish green
Streak:
White
Hardness:
2½ - 3 on Mohs scale
Hardness:
VHN100=68 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
on (010)
on (010)
Density:
2.48(2) g/cm3 (Measured) 2.476 g/cm3 (Calculated)
Optical Data of Ankinovichite
Type:
Biaxial (+)
RI values:
nα = 1.653(2) nβ = 1.677(2) nγ = 1.706(3)
2V:
Measured: 84° to 88°, Calculated: 86°
Max. Birefringence:
δ = 0.053
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.
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.
Surface Relief:
Moderate
Dispersion:
strong v > r
Pleochroism:
Non-pleochroic
Chemistry of Ankinovichite
Mindat Formula:
(Ni,Zn)Al4(V5+O3)2(OH)12 · 2.5H2O
Element Weights:
Crystallography of Ankinovichite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 17.81 Å, b = 5.123 Å, c = 8.866 Å
β = 92.14°
β = 92.14°
Ratio:
a:b:c = 3.476 : 1 : 1.731
Unit Cell V:
808.38 ų (Calculated from Unit Cell)
Z:
2
Morphology:
elongated tabular crystals with a six-sided shape
Twinning:
common
Comment:
Space Group: P21/n
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) |
|---|---|---|---|---|---|---|---|
| 0015715 | Ankinovichite | Karpenko V Y, Pautov L A, Sokolova E V, Hawthorne F C, Agakhanov A A, Dikaya T V (2004) Ankinovichite - the nickel analogue of alvanite - a new mineral from Kurumsak (Kazakhstan) and Kara-Chagyr (Kyrgystan) Zapiski Vserossijskogo Mineralogicheskogo Obshchestva 133 59-70 | 2004 | Kara-Chagyr, Kyrgystan | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.89 Å | (100) |
| 7.83 Å | (100) |
| 1.97 Å | (80) |
| 1.90 Å | (70) |
| 1.48 Å | (80) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] |
Geological Setting:
vanadium-bearing slates
Type Occurrence of Ankinovichite
Co-Type Localities:
General Appearance of Type Material:
crusts of tabular crystals to 0.2 mm and V-shaped twins to 0.5 mm
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Russian Academy of Science, Moscow, Russia; 6798.
Geological Setting of Type Material:
vugs of a vanadium-bearing slate/quartz breccia
Associated Minerals at Type Locality:
Synonyms of Ankinovichite
Other Language Names for Ankinovichite
Dutch:Ankinovichiet
French:Ankinovichite
German:Ankinovichit
Norwegian:Ankinovichitt
Russian:Анкиновичит
Simplified Chinese:安奇诺维奇石
Spanish:Ankinovichita
Traditional Chinese:安奇諾維奇石
Relationship of Ankinovichite to other Species
Structurally related to group(s):
| Chalcoalumite Group | A group of metal(II)-Al-sulphates, with additional anions in some species. |
Common Associates
Associations Based on Photo Data:
| 4 photos of Ankinovichite associated with Volborthite | Cu3(V2O7)(OH)2 · 2H2O |
| 3 photos of Ankinovichite associated with Kolovratite | NixZny(VO4)0.67(x+y) · nH2O |
Related Minerals - Strunz-mindat Grouping
| 8.FE. | Yellowcatite | KNaFe3+2(Se4+O3)2(V5+2O7) · 7H2O |
| 8.FE.05 | Alvanite | ZnAl4(V5+O3)2(OH)12 · 2H2O |
Fluorescence of Ankinovichite
none
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 Ankinovichite
mindat.org URL:
https://www.mindat.org/min-11516.html
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Please feel free to link to this page.
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References for Ankinovichite
Reference List:
Localities for Ankinovichite
Showing 2 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.
Kazakhstan (TL) | |
| Karpenko et al. (2004) |
Kyrgyzstan (TL) | |
| Proceedings of the Russian Mineralogical Society (2) +2 other references |
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Kara-Chagyr Mountain, Kadamjay District, Batken Region, Kyrgyzstan