7.8" Polished Banded Chrysocolla Slab - Ray Mine, Arizona

This is a brilliant, polished slab of banded chrysocolla from the Ray Mine in Arizona. It is a wonderful, banded pattern of light-blue to deep blue chrysocolla that has been polished to a glossy finish on one side.

There is a repaired fracture running through this slab and the price reflects that.

It comes with an acrylic display stand.

Chrysocolla is a basic copper silicate that typically forms as a pseudomorph following other copper based minerals. The chemical formula is considered undetermined due to the varying substitutions of elements and water content in its chemical structure. However, there is a form of chrysocolla with an identifiable chemical formula of Cu2H2Si2O5(OH)4 that can be found in microcrystals.

Regularly, chrysocolla will form as botryoidal lumps and spheres, rarely forming visible crystals. It can also form in both solid and fibrous veins, over fibrous minerals, and in crusts. Known for its sharp and vibrant coloring, chrysocolla can display a wide variety of colors such as bluish-green, bright green, light blue, to even sometimes multicolored specimens depending on the atmosphere present during formation.
Ray Mine, Scott Mountain, Pinal County, Arizona
7.8 x 4", .35" thick