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Formula: Ni6Al2(OH)16(CO3).4H2O
Valence: Ni2+6Al2(OH)16(CO3).4H2O
Hydrated carbonate, hydrotalcite group,
hydrotalcite supergroup,
nickel-bearing mineral
Crystal system: Trigonal
Specific gravity: 2.80 measured, 2.95 calculated
Hardness: 2
Colour: Yellowish green, bluish green
Environments
Metamorphic environments
Hydrothermal environments
Localities
At Kambalda, Coolgardie Shire, Western Australia, takovite occurs as an alteration product of
nickel sulphides. Associated minerals include
glaukosphaerite, népouite,
gaspéite, paratacamite,
nickel-bearing magnesite and
gypsum
(HOM).
Takovite from Kambalda - Image
At the type locality, Takovo, Gornji Milanovac, Moravica District, Central Serbia, Serbia, takovite occurs at the
contact of limestone and metamorphosed
serpentinite, associated with
gibbsite, allophane and "aidyrlite"
(a mixture of gibbsite, opal and
theophrastite)
(AM 57.1552-1561).
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