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Formula: CaZrSi3O9.2H2O
Cyclosilicate (ring silicate), catapleiite group, forms a series
with catapleiite,
zirconium-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 2.77 measured, 2.746 calculated
Hardness: 4½ to 5
Streak: White
Colour: Light yellow, reddish brown, cream
Environments
Calciocatapleiite occurs in cavities between crystals of microcline, in
syenite pegmatites of a
differentiated alkalic massif. Associated minerals include pyrophanite,
pyrochlore, titanium-bearing
låvenite, loparite-(Ce),
kupletskite, rare-earth apatite,
hiortdahlite, calcium-bearing seidozerite,
leucophanite and microcline
(HOM).
Localities
The type locality is the Burpala alkaline massif, Maigunda River, Mama River Basin, Buryatia, Russia.
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