5.4" Polished Malachite & Azurite Slab - Siberia

 

This is a stunning, polished slab of rock containing veins of the copper bearing minerals azurite (blue) and malachite (green). It was mined from the Altay Mountains in central Siberia. Comes with an acrylic display stand.

Malachite is a basic copper carbonate with the chemical formula Cu2CO3(OH)2. This mineral is known for its intense green color, along with the wide variety of formations and patterns that it's found in. Malachite can grow in botryoidal masses, stalactitic, and reniform formations, typically as a tight cluster of fanning fibrous needles that make up a seemingly solid mass. As layers continue to stack during formation, a banded pattern can sometimes begin to take shape, which explains the rings in all shades of green that are seen on most polished malachite specimens.

Azurite is a copper carbonate hydroxide mineral with a chemical composition of Cu3(CO3)2(OH)2. It is best known for it's beautiful and vibrant blue appearance, typically forming with other colorful, copper rich minerals.

Azurite and malachite are known to form in union with each other, for their chemical makeup is very similar. In fact, the presence of more or less water in the location of formation, is enough to determine whether an abundance of malachite over azurite, or vise-versa, will accumulate.
DETAILS
SPECIES
Azurite, Malachite & Quartz
LOCATION
Altay Mountains, Siberia, Russia
SIZE
5.4x4.4", 1/5" thick
ITEM
#92687