This specimen contains a cluster of azurite crystals, perched within a pocket of the matrix. Some of the crystals are pristine, however the point of removal resulted in some breakage to part of the cluster. There is also a small pocket of druzy quartz, with a second pocket on the opposite side of the rock that contains another azurite crystal cluster.
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.