Wulfenite, Calcite – Cumbres Stope, Ojuela Mine, Mapimi, Mexico
 Gorgeously transparent wulfenite crystals with calcite on a high-contrast black matrix from the Cumbres Stope, Ojuela Mine, Mapimi, Mexico. On one side is a clear wulfenite crystal overgrown with perfect calcite. Specimen size approximately 9.3 cm x 7.5 cm