4.4" Turquoise Chrysocolla on Malachite - Congo

This colorful specimen contains fibrous malachite in spherical botryoidal formations, coated in a pseudomorph of turquoise colored chrysocolla. Rings from the formation of malachite can be seen along the edge, where a cross section remains from the removal of this mineral association. The heterogenite matrix of this specimen reveals small veins and cracks of chrysocolla and malachite, leaving even the matrix with a beautiful and unique appearance. This specimen 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's also been known to 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 blueish-green, bright green, light blue to even sometimes multicolored specimens, depending on the atmosphere present during formation.
Chrysocolla & Malachite
Democratic Republic of the Congo
4.4" long, 3.7" wide, 2.6" tall