Zirsilite-(Ce)
(Na,[ ])₁₂(Ce, Na)₃Ca₆Mn₃Zr₃Nb(Si₂₅O₇₃)(OH)₃(CO₃) · H₂O

     Zirsilite-(Ce) is a recent addition for mont-Saint-Hilaire. It was discovered at the same time as IMA 2004-026, a new type locality for MSH (johnsenite-(Ce). It increases the list of eudialyte-group species: ferrokentbrooksite, johnsenite-(Ce), kentbrooksite, khomyakovite, manganokhomyakovite and oneillite.

PHYSICAL CHARACTERISTICS:

Color is cream.
Luster is vitreous.
Diaphaneity is transparent.
Crystal System is trigonal; R3m.
Crystal Habits include (??).
Cleavage: none.
Fracture is conchoidal.
Hardness is 5.
Specific Gravity is approximately 3,15 g/cm³.
Streak is white.
Associated Minerals include (??).
Distinguishing Features: Brittle.
Origin: Named in 2002 to reflects its composition, ZIR + SIL and Cerium.

CLASSIFICATION:

REFERENCES:
To Follow

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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