Ankinovichite Mineral Data

General Ankinovichite Information

Chemical Formula:

(Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5

Composition:

Molecular Weight = 602.70 gm

Aluminum 17.91 % Al 33.83 % Al₂O₃

Vanadium 15.89 % V 23.38 % V₂O₃

Zinc 1.84 % Zn 2.30 % ZnO

Iron 0.09 % Fe 0.12 % FeO

Copper 0.21 % Cu 0.26 % CuO

Silicon 0.28 % Si 0.60 % SiO₂

Nickel 6.62 % Ni 8.43 % NiO

Hydrogen 2.92 % H 26.09 % H₂O

Oxygen 54.23 % O

______ ______

100.00 % 95.01 % = TOTAL OXIDE

Empirical Formula:

Ni_0.68Zn_0.17Fe²⁺_0.01Cu_0.02Al₄Si_0.06VO3_1.88(OH)_12.12ï¿½2.67(H₂O)

Environment:

In vanadium-bearing schists.. Ni-dominant analogue of alvanite; structure determined.

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

Kara-Tau ridge at Kurumsk, 15 km south-southeast of Aksumbe, Kazakhstan and (2) Kara-Chagyr mountain, on the east side of the Isfairamsai river, near Valakish, 6 km south of Uch-Kurgon Link to MinDat.org Location Data.

Name Origin:

Named for Ekaterina Alexandrovina Ankinovich (1911-1991) and her husband Stepan Gerasimovitch Ankinovich (1912-1985). Russian mineralogist and geologist.

Synonym:

IMA2002-063

Ankinovichite Image

Images:

Ankinovichite

Comments: Aggregates of pale green thin pseudohexagonal plates of ankinovichite on matrix.
Location: Kara-Chagyr Mountain, Fergana, Fergana Valley, Osh Oblast, Kyrgyzstan. Scale: See Image.
© Rruff Database

Ankinovichite Crystallography

Axial Ratios:

a:b:c =3.4765:1:1.7307

Cell Dimensions:

a = 17.8098, b = 5.1228, c = 8.8665, Z = 2; beta = 92.141° V = 808.38 Den(Calc)= 2.48

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/n

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 7.83(1)(101), 8.89(1)(200), 1.481(0.8)(653),1.904(0.7)(621), 1.605(0.5)(623), 3.266(0.5)(501), 1.98(0.4)(820), 3.354(0.4)(012),

Physical Properties of Ankinovichite

Cleavage:

{010} Perfect

Color:

Colorless, White, Light green, Light blue.

Density:

2.48

Diaphaneity:

Transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Ankinovichite

Gladstone-Dale:

CI meas= -0.12 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.12 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2737,KPDmeas= 0.2737,KC= 0.2444
Ncalc = 1.61

Optical Data:

Biaxial (+), a=1.653, b=1.677, g=1.706, bire=0.0530, 2V(Calc)=86, 2V(Meas)=86. Dispersion r < v strong.

Calculated Properties of Ankinovichite

Electron Density:

Bulk Density (Electron Density)=2.49 gm/cc
note: Specific Gravity of Ankinovichite =2.48 gm/cc.

Fermion Index:

Fermion Index = 0.0023166298
Boson Index = 0.9976833702

Photoelectric:

PE_{Ankinovichite}= 7.10 barns/electron
U=PE_{Ankinovichite} x rElectron Density= 17.64 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ankinovichite is Not Radioactive

Ankinovichite Classification

Dana Class:

42.13.13.02 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.13)Dana Type

(42.13.13)Alvanite Group

42.13.13.01 Alvanite (Zn,Ni)Al4(VO3)2(OH)12•2(H2O) P 2₁/n 2/m

42.13.13.02 Ankinovichite! (Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5 P 2₁/n 2/m

Strunz Class:

08.FE.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.F - Polyphosphates, Polyarsenates, [4]-Polyvanadates

08.FE -Ino-[4]-vanadates

08.FE.05 Alvanite (Zn,Ni)Al4(VO3)2(OH)12•2(H2O) P 2₁/n 2/m

08.FE.05 Ankinovichite! (Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5 P 2₁/n 2/m

Other Ankinovichite Information

References:

NAME( CanMin, 42:1903) PHYS. PROP.(CanMin, 42:1903) OPTIC PROP.(CanMin, 42:1903)

See Also:

Links to other databases for Ankinovichite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Ankinovichite

(Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5
Dana No: 42.13.13.02 Strunz No: 08.FE.05
Locality:

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