Calcite

A duplicate from my collection so a bit of housecleaning and a lucky strike for the right collector. These curious Calcites are always a deep orange with a secondary coating. I have only seen a half dozen or so in my lifetime, and they were all thumbnail to miniature sized. Perfect condition. Ex Geoff Krasnov

Locality: Tsumeb Mine, Otjikoto Region, Tsumeb Namibia

Composition: calcium carbonate