Mineral - Ankinovichite
Ankinovichite
Chemical Properties
Mineral Class
Vanadates
Toxicity
none
Formula
(Ni,Zn)Al₄(VO₃)₂(OH)₁₂ · 2H₂O
Unit Cell
a=17.81 b=5.12 c=8.87 β=92° Z=2
Physical Properties
Hardness
2.5 - 3
Streak
white
Density
Normal (2-3,5)
Cleavage
Perfect after {010}
Fracture
Tenacity
Brittle
Optical Properties
Color
graygreenblue
Birefringence
0.053
Luster
Vitreous
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
monoclinic-prismatic - 2/m
Space Group
P2 1 /c (14)
Habit
leafy, coarse, crusty, massive, tabular
Formation
Secondary, hydrothermal at low temperatures
Paragenesis
Twinning
Rarity
Rare
Synonyms
Ankinovichite
Composition
Elements
Mass
Al₂O₃
33.82
SiO₂
0.59
V₂O₅
28.41
FeO
0.14
NiO
8.43
CuO
0.27
ZnO
2.24
H₂O
23.30
Kyrgyzstan (Karpenko et al. 2004)
Name and first discovery : Named after the Russian mineralogists Ekaterina Aleksandrovna Ankinovich (1911-1991) and Stepana Gerasimovicha Ankinovich (1912-1985). First identified and described in 2002.
Chemistry :
Synonyms :
Varieties :
Abbreviation : Akv
literature
Karpenko, VY, Pautov, LA, Sokolova, EV, Hawthorne, FG, Agakhanov, AA, Dikaya, TV, & Bekenova, GK (2004). Ankinovichite, the nickel analogue of alvanite, a new mineral from Kurumsak (Kazakhstan) and Kara-Chagyr (Kyrgyzstan). Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva , 133 , 59-70.