- Calcite, Copper
- Miniature, 4.4 x 4.2 x 2.9 cm
- Bufa Mine, La Bufa, Mun. de Batopilas, Chihuahua, Mexico
A rare Mexican example of copper included inside a crystal of calcite. Although most faces are admittedly cleaved - this is a locality piece of some interest from a historic find. If you look down into the crystal, you can see the bright copper along the surface of the matrix.