An unusual boat shaped specimen, with a manganocalcite hull and pyrite sail.  Although the pyrite looks like a random shard, it is actually a cluster of cubic crystals.

Racracancha is a long abandoned mine, which around 2007 was rediscovered by local miners who for the last few years have been working to extract mineral specimens.  The mine is most notable for its striated pyrites, included calcites, and manganocalcites.