Nice specimen Polished Chrysocolla on Malachite - Height: 147 mm - Width: 85 mm- 1095 g

This specimen of turquoise over malachite comes from the Congo, one of the world’s most celebrated regions for copper ore deposits and for the variety of secondary minerals that derive from them. The formation of this sample dates back to ancient geologic times: the oxidation processes of the large copper-bearing deposits, set in motion millions of years ago, promoted the crystallization of copper carbonates and silicates which, layer by layer, gave rise to these spectacular concretions. The malachite, with its dark green banding and the characteristic botryoidal structure, forms the solid base of the specimen. Upon it developed the turquoise-colored chrysocolla, which covers the surface with a deep blue‑green hue, crossed by fine natural reticulation and by silvery veins due to metallic residues. The union of the two minerals creates a striking chromatic contrast, telling the ongoing transformation of matter in the oxidized copper deposits. This specimen, with an aesthetic of rare beauty, is a geological document that testifies to the meeting of mining processes and the deep time of the Earth. An ideal display piece for natural history collections, mineralogical museums, or for anyone wishing to enrich their spaces with a mineral that blends science and natural art in a single form.