Malachite from the Congo
Size-
8.1cm x 6.2cm x 2.9cm
Weight-
314g
You will receive the item in the photo
Crystal system- Monoclinic
Mineral class- Carbonate
Habit- Individual crystals are rare; it usually as Botryoidal,fibrous,stalagmitic or crust like masses with banded concentric rings.
Rock formation:
Environment- supergene (surface weathering and oxidation) zones of underground copper orebodies.
Process- Chemical precipitation occurs when carbonated water reacts with pre-existing copper sulfides or primary copper minerals in subterranean fractures and cavities.
Host rocks- Commonly found in limestone or associated country rock where carbonated solutions interact with copper rich fluids.
Frequently found alongside azurite,cuprite and native copper.
