Iridescent Chalcopyrite on Calcite Crystal Cluster from China

Beautiful specimen of calcite coated with sparkling, iridescent chalcopyrite. From Daye Co., Huangshi, Hubei, China.
Measures approximately 60x36x35 mm and weighs 100.5 grams. Please see photos for details, the bottom is partially sawn. This specimen does not come mounted on a stand.