Weloganite

weloganite

dawsonite

zirconium

dresserite

Images

Formula: Na₂Sr₃Zr(CO₃)₆.3H₂O
Hydrated carbonate, mckelveyite group, zirconium mineral
Crystal System: Triclinic
Specific gravity: 3.20 to 3.22 measured, 3.208 calculated
Hardness: 3½
Streak: White
Colour: White, lemon-yellow, amber
Solubility: Soluble with effervescence in dilute hydrochloric acid
Environments

Carbonatites

Weloganite occurs in an alkalic sill intruding an Ordovician limestone (Webmin).

Localities

At the type locality, the Francon quarry, Montréal, Quebec, Canada, weloganite occurs where an alkaline sill intrudes limestone. Associated minerals include calcite, quartz, dawsonite and dresserite (Dana, Mindat, HOM).

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