What is "weloganite"

n. (context mineralogy English) A rare triclinic carbonate mineral, usually white, lemon yellow, or amber, and sometimes translucent.

Weloganite is a rare carbonate mineral with formula: It was discovered by Canadian government mineralogist Ann P. Sabina in 1967 and named for Canadian geologist Sir William Edmond Logan (1798–1875). It was first discovered in Francon Quarry, Montreal, Canada and has only been reported from a few localities worldwide.