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Formula: ZrO2
Valence: Zr4+O2-2
Simple oxide of zirconium, tetragonal
paramorph of monoclinic
baddeleyite
Crystal system: Tetragonal
Specific gravity: 5.53 calculated
Colour: Brownish black tint
Environments
Ziroite is a new mineral, approved in 2022 and to date (January 2026) reported only from the type locality.
Localities
At the type locality, Mount Carmel, Haifa District, Israel, ziroite occurs as inclusions in
corundum
xenocrysts, as irregular crystals ~1 to 4 μm
in size, associated with baddeleyite,
hibonite, corundum,
fluorbritholite-(Ce),
osbornite and hapkeite
(Mindat).
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