Arsenopyrite

A superb arsenopyrite crystal from the famous mining district of Santa Eulalia, Chihuahua, Mexico. The specimen consists of a sharply developed, wedge-shaped crystal exhibiting the pronounced parallel striations characteristic of the species. Brilliant metallic lustre and crisp crystal edges combine to produce a striking thumbnail specimen.

Santa Eulalia has been one of Mexico's most prolific silver-lead-zinc mining districts since the early 1700s and is renowned among collectors for producing world-class crystallized minerals. Although best known for its fluorite, calcite, galena, and smithsonite, the district has also yielded outstanding arsenopyrite crystals displaying exceptional textbook morphology such as this. An elegant thumbnail specimen showcasing the brilliant metallic lustre and beautifully striated crystal faces that have made Santa Eulalia arsenopyrite a classic among worldwide mineral localities.