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






Holds BSc in geology and post-graduate qualifications in geochemistry.
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Description from the seller
This specimen of chrysocolla on malachite originates from Congo, one of the world’s most celebrated regions for its copper deposits and for the variety of secondary minerals that derive from them. The formation of this sample dates back to ancient geological times: oxidation processes of large copper-bearing deposits, set in motion millions of years ago, favored the crystallization of copper carbonates and silicates which, layer after layer, gave rise to these spectacular concretions. Malachite, with its dark green bands and the characteristic botryoidal structure, constitutes the solid base of the specimen. Upon it chrysocolla has developed, covering the surface with an intense blue-turquoise color, crossed by delicate natural reticulation and marked by silvery veins due to metallic residues. The union of the two minerals creates a striking color contrast, illustrating the ongoing transformation of matter in oxidized copper ore deposits. This specimen, with a rare beauty in its aesthetics, is a geological document that testifies to the meeting between mining processes and the deep times of the Earth. An ideal display specimen for natural history collections, mineralogical museums, or for anyone wishing to enrich their space with a mineral that combines science and natural art in a single form.
Seller's Story
This specimen of chrysocolla on malachite originates from Congo, one of the world’s most celebrated regions for its copper deposits and for the variety of secondary minerals that derive from them. The formation of this sample dates back to ancient geological times: oxidation processes of large copper-bearing deposits, set in motion millions of years ago, favored the crystallization of copper carbonates and silicates which, layer after layer, gave rise to these spectacular concretions. Malachite, with its dark green bands and the characteristic botryoidal structure, constitutes the solid base of the specimen. Upon it chrysocolla has developed, covering the surface with an intense blue-turquoise color, crossed by delicate natural reticulation and marked by silvery veins due to metallic residues. The union of the two minerals creates a striking color contrast, illustrating the ongoing transformation of matter in oxidized copper ore deposits. This specimen, with a rare beauty in its aesthetics, is a geological document that testifies to the meeting between mining processes and the deep times of the Earth. An ideal display specimen for natural history collections, mineralogical museums, or for anyone wishing to enrich their space with a mineral that combines science and natural art in a single form.
