Weloganite
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Weloganite is a rare carbonate mineral with formula: Na2(Sr,Ca)3Zr(CO3)6·3H2O. It occurs in an igneous carbonatite sill in Montreal, Canada in the Francon Quarry where it was first discovered. It also occurs in the Mont Saint-Hilaire district. It is usually white, lemon yellow, or amber in color, and can be translucent. It crystallizes in the triclinic system and shows pseudo-hexagonal crystal forms. It was named for Canadian geologist William Edmond Logan (1798-1875).
References
- Mineral Galleries (http://mineral.galleries.com/minerals/carbonat/welogani/welogani.htm)
- Mindat (http://www.mindat.org/min-4266.html)
- Webmineral (http://webmineral.com/data/Weloganite.shtml)Template:Mineral-stub