Tikhonenkovite

tikhonenkovite

gearksutite

karasugite

strontianite

Images

Formula: SrAlF4(OH).H2O
Halide complex, paramorph of acuminite, strontium-bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.26 measured
Hardness: 3½
Streak: White
Colour: Pale pink, colourless
Environments

Hydrothermal environments

Although tikhonenkovite was approved as long ago as 1964, to date (August 2022) it has been reported only from the type locality.

Localities

At the type locality, the Karasug REE-Sr-Ba-Fe-fluorite deposit, Tannu-Ola Range, Tuva, Russia, tikhonenkovite occurs as small crystals, up to 5 mm across in the oxidation zone of siderite-rich ore. It is a secondary mineral, occurring in fissures and druses in limonite-hydrohematite ores, associated with quartz, gearksutite, karasugite, fluorite, celestine, strontianite and baryte (AM 49.1774-1775, HOM).

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