Aurichalcite and Calcite

Aurichalcite and calcite from Mina Ojuela in Mapimí, Durango, Mexico, make a classic combination from one of Mexico’s best-known mineral localities. Ojuela is famous for its lead and silver mining history and the variety of secondary minerals found in its oxidized ore deposits.

Aurichalcite forms delicate blue-green needles, sometimes growing beneath or inside clear calcite crystals. The contrast between the bright color and the transparent calcite makes this association especially recognizable to collectors.