20933 - Beautiful Malachite Crystals on Barite Matrix - Taouz Barite Mines (Morocco) Dinosaur some sectors during the preparation

some sectors during the preparation process have been fractured and glued again

coarse channel fill

Nigeria (2)

Perischoclonus

20933 - Beautiful Malachite Crystals on Barite Matrix - Taouz Barite Mines (Morocco) Dinosaur some sectors during the preparationMalachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and spaces, deep underground, where the water table and hydrothermal fluids provide the means for chemical precipitation. Individual crystals are rare but do occur as slender to acicular prisms. Pseudomorphs after