Zirkelite

zirkelite

baddeleyite

perovskite

titanium

Formula: (Ti,Ca,Zr)O_2-x
Multiple oxide, titanium and zirconium bearing mineral
Crystal System: Isometric
Specific gravity: 4.741 measured
Hardness: 5½
Streak: Brownish black
Colour: Black
RADIOACTIVE
Environments

Plutonic igneous environments
Carbonatites

Localities

At the type locality, the Jacupiranga mine, Cajati, São Paulo, Brazil, zirkelite occurs in a carbonatite. Associated minerals include baddeleyite and perovskite (Dana, HOM).

At the Aldan shield, Sakha Republic (Yakutia), Russia, zirkelite occurs in coarse-grained micaceous pyroxenite (Dana).

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