Hydrated phosphate containing hydroxyl
Specific gravity: 2.38
Streak: Pale yellow
Colour: Pale yellow, orange-yellow, orange, orange brown
Ushkovite is a rare phosphate. Common associates include hydroxylapatite,
jahnsite, manganese oxides, mitridatite,
siderite, stewartite and
At Tom's quarry, Kapunda, Mount Lofty ranges, South Australia, ushkovite has been found associated with apatite, leucophosphite, mitridatite, xanthoxenite and natrodufrénite (AJM 17.1.26).
At the type locality, Pit No. 232, Bol'shoi Tatkul' Lake, Chelyabinsk Oblast, Russia, ushkovite is found as a supergene product of weathering of triplite in granite pegmatites associated with triplite, manganese hydroxides, carbonate-rich fluorapatite, mitridatite and beraunite (Dana, AM 69.212, Webmin, Mindat).
Back to Minerals