Mineral Information and Data:

Ankinovichite
NiAl4(VO3)2(OH)12 • 2H2O [CNMNC approved formula]

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

IMA status : Approved Species 2004 (IMA2002-063)
CLASSIFICATION 
Dana
(8th edition) :
42.13.13.02  
  (42) Hydrated Phosphates Containing Hydroxyl or Halogen
  (42.13)
  (42.13.13) Alvanite Group
  
Nickel-Strunz
(10th edition) :
08.FE.05
  (08) Phosphates, Arsenates, Vanadates
  (08.F) Polyphosphates, Polyarsenates, [4]-Polyvanadates
  (08.FE) Ino-[4]-vanadates
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
Unit cell: a = 17.81 , b = 5.123 Å, c = 8.866 Å, β = 92.14°
Crystal Habit: Elongated tabular crystals with a six-sided shape
Twinning: Common
  
Color: Colorless to pale bluish green
Diaphaneity: Transparent
Luster: Vitreous
Hardness (Mohs): 2.5 - 3
Cleavage: Perfect on (010)
Tenacity: Brittle
Streak: White
  
Geologic Setting: Vugs of a vanadium-bearing slate/quartz breccia
  

 

Ankinovichite
Pale bluish green crystalline crusts of Ankinovichite - the Ni analogue of Alvanite - from the type locality. Associating minerals are olive-green platelets of Volborthite and disperse yellow Kolovratite-like mineral.
Origin: Kara-Chagyr Mountain, Fergana, Fergana Valley, Alai (Alay) Range, Osh Oblast, Kyrgyzstan
Sample size: frame view 2 x 2.5 cm
Photo: © Pavel M. Kartashov

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