Sibirskite

sibirskite

vesuvianite

datolite

axinite

Images

Formula: CaH(BO3)
Anhydrous borate
Specific gravity: 2.58
Hardness:
Streak: White
Colour: Colourless, dark grey when included by chlorite
Solubility: Insoluble in boiling water, soluble in cold acetic or hydrochloric acid (AM 48.433)
Environments

Metamorphic environments

Sibirskite occurs in veinlets and aggregates in skarn (HOM).

Localities

At the Fuka mine, Fuka, Bicchu-cho, Takahashi City, Okayama Prefecture, Japan, the deposit is a high-temperature, boron-containing skarn (R&M 965.395). Sibirskite is associated with takedaite, nifontovite, olshanskyite, pentahydroborite, frolovite, parasibirskite, uralborite, borcarite, fluorite and calcite (HOM).

At the type locality, the Yuliya Svintsoviya deposit, Khakassia, Russia, sibirskite occurs in skarn near the contact of limestone with granite. Associated minerals include calcite, chlorite, pyrite, garnet, vesuvianite, datolite, tourmaline and axinite (AM 48.433, HOM).

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