page_title: Plancheite
section_title: Environment
hierarchical_section_title: Plancheite / Environment
caption_attribution_description: English: Plancheite Locality: Kolwezi, Western area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) (Locality at mindat.org) Botryoids of velvety, sky blue plancheite, up to .75 cm, adorn the matrix. This uncommon copper silicate is rarely seen in good specimens. On the specimen edge one can clearly see the radiating pattern of crystal development. EXTREMELY LARGE AND RICH FOR THE LOCALITY! 5.9 x 3.2 x 2.6 cm Deutsch: Plancheit Fundort: Kolwezi, Western area, Katanga Copper Crescent, Katanga, Demokratische Republik Kongo (Fundort bei mindat.org)
context_page_description: Plancheite is a hydrated copper silicate mineral with the formula Cu₈Si₈O₂₂(OH)₄•. It is closely related to shattuckite in structure and appearance, and the two minerals are often confused.
context_section_description: Plancheite is a secondary mineral formed in the oxidized zone of copper deposits, associated with other copper minerals chrysocolla, dioptase, malachite, conichalcite and tenorite.  It occurs with primary malachite at the Milpillas Mine in Mexico.  The type locality is the Sanda Mine, Mindouli, Pool Region, Republic of Congo.
caption: Plancheite, Kolwezi, Katanga (Shaba), Democratic Republic of Congo. 5.9 x 3.2 x 2.6 cm.
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