- Calcite, Pyrite
- Cabinet, 12.5 x 12.0 x 6.5 cm
- La Sirena Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico
A fine cabinet specimen from the La Sirena Mine, Guanajuato, Mexico. Highly lustrous, translucent, modified stepped-growth calcite scalenohedrons to 6.0 cm are scattered as a discrete crystal or in clusters on a contrasting matrix covered with lustrous, brassy pyrite crystals. This mine is on the same vein as the famous Rayas Mine. Ex. Dave Stoudt Collection.