An Exclusive Collection of Unique and Refined Pieces. Stalactitic Tubular Malachite from Congo - Height: 260 mm - Width: 150 mm- 4624 g - (1)

A particularly interesting specimen of stalactitic malachite from Congo, mounted on a black wooden base with a brass support. A specimen very striking in shape and structure, different from the classic compact or polished malachites: here the mineral presents itself as a natural tubular growth, branched and concretionary. The form of the specimen is very dramatic. The upper parts show several open tips, with circular and concentric sections, resembling small mineral tubes. These openings should not be interpreted as gas emissions, but as the result of stalactitic growth of malachite: ancient deposition channels along which solutions rich in copper and carbonates flowed or dripped. Malachite is a basic copper carbonate that forms as a secondary mineral in oxidation zones of copper ore bodies. In copper-rich environments, mineralized water traverses fractures, cavities and voids in the rock; over time, the mineral precipitates slowly, layer by layer, building concentric walls and tubular shapes. The lines visible on the tips and side sections tell exactly these successive growth stages. The specimen features undulating surfaces, natural ridges, cavities and inner bands, with green hues typical of Congolese malachite. The overall appearance is almost sculptural: a small geological architecture, born from the circulation of water and the chemistry of copper. The mounting on a black wooden base with brass structure enhances the verticality of the specimen and makes it suitable both for a mineral collection and for a contemporary Wunderkammer or a decorative setting dedicated to natural history. A collectible piece for those seeking a malachite that is not only color-rich but especially notable for its natural shape and for the legibility of its formation process. Technical data Mineral: Malachite Chemical formula: Cu2CO3(OH)2 Type: Stalactitic, tubular and concretionary malachite Origin: Congo Support: Base in black wood with brass structure Category: Collectible mineral, decorative mineral specimen