Mercedes Calcite (Chalcopyrite on Calcite) - Specimen rubble-rock-and-gem Geological Age: 23-3
Baker’s notes & crumb story
Description
Mercedes Calcite (Chalcopyrite on Calcite) Specimen rubble rock and gem Geological Age: 23 3 Geological Age: 23 3 The included scale image (with a coin) gives a clear sense of its substantial size and presence