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From daye Hubei
crystal surfaces bear stepped growth striations
Phantom Fluorite and pyrrhotite
A thin iron‑oxide film across crystal surfaces creates iridescent tarnish through light‑wave interference under ambient light
Dimension : 12
Chrysocolla & Cobaltoan Calcite, Mashamba West Mine, Kolwezi, Lualaba,DRC featured From daye HubeiChrysocolla & Cobaltoan Calcite, Mashamba West Mine, Kolwezi, Lualaba,DRC This specimen features a classic association of botryoidal chrysocolla and cobaltoan calcite. The vivid turquoise chrysocolla encrusts magenta cobaltoan calcite crystals, creating a striking, intense color contrast. This mineral assemblage is emblematic of the oxidized copper cobalt zones of the Katanga Copperbelt. Dimension: 752cm. FREE shipping worldwide, shipping time 15 25