Pyrite

Here's a specimen that consists of clusters of stepped cubes and octahedra in a rounded form. The Port au Port Peninsula, on the west coast of the island of Newfoundland has become a prolific producer of mineral specimens, in recent years. One of the most interesting is the occurrence of pyrite nodules and crystals in the shales of West Bay, Tea Cove, Lead Cove, etc. Some of the shale remains attached for geological context. Very nice!