1066 Helvite, Pyrite, Navegadora Mine (Navegador Mine; Orozimbo Mine), Penha do Norte, Conselheiro Pena, Doce valley, Minas Gerais, Brazil

Triangular brown helvite crystals with associated pyrite, previously in the Brian Shelton collection. Acquired from Cyril Kovac at the 2013 Waverley Show. Width of view 11.5mm. Stack of 40 images.

Click on the image below for a higher resolution version.