Calcite var Manganoan

If I were to pick my favorite top 5 localities Naica would be in that selection. The fluorites and calcites in particular. This piece is all about the calcite. It is complete all around (all contact at the bottom)and exhibits A stacked series of pink rhombohedra with slightly beveled edges and incredible luster. Off on one side are some quartz and pyrites.

Locality: Naica Mine, Naica, Municipia de Saucillo, Chihuahua, Mexico

Composition: calcium carbonate