Penikisite

penikisite

kulanite

rapidcreekite

arrojadite

Images

Formula: BaMg₂Al₂(PO₄)₃(OH)₃
Anhydrous phosphate, bjarebyite group, forms a series with kulanite, barium-bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.79 measured, 3.82 calculated
Hardness: 4
Streak: Very pale green to white
Colour: Blue to green

Hydrothermal environments

Penikisite is a very rare weathering product in fractures in sideritic iron formations, associated with kulanite, quartz, siderite, fluorapatite, rapidcreekite, brazilianite, arrojadite, anatase and goyazite (HOM).

Localities

At the type locality, Rapid Creek, Dawson mining district, Yukon, Canada, penikisite occurs in zones in well formed blue to green kulanite-penikisite crystals (CM 15.393-395).

Penikisite from Rapid Creek - Image

Back to Minerals