Copper in Matrix - Mineral quartz with copper rutile they have a circular cutout

they have a circular cutout in their center which starts at the bottom and goes approximately halfway up the inside

making the two claw marks stand out

which is thought to help reduce stress

5cm x 6cm x 5cm

Description: These ammonites have been iron replaced

Copper in Matrix - Mineral quartz with copper rutile they have a circular cutoutMined from: Oumjrane Mining Area, Tinghir Province, Morocco Description: This specimen from the Oumjrane Mining Area in Tinghir Province, Morocco features native copper within its natural host rock, displaying green surface coloration produced by the oxidation of copper minerals. When exposed to oxygen and groundwater over time, copper commonly alters to secondary minerals such as malachite, which creates the distinctive green coatings often seen on