description Plancheite Overview
Plancheite is a rare hydrated copper silicate mineral with the ideal formula Cu8Si8O22(OH)4·H2O. It is typically pale to deep blue or blue-green and commonly occurs as rounded concretions, spherules, or tightly fibrous and sometimes asbestiform aggregates rather than as large transparent crystals. The mineral was described in 1908 and is associated with oxidized copper deposits, especially at its type locality near Mindouli in the Republic of the Congo; collectors value it mainly as a mineral specimen.
help Plancheite FAQ
How good is Plancheite?
Plancheite scores 4.14/10 (Poor) on Lunoo, making it rated in the Gemstone category.
What are the best alternatives to Plancheite?
See our alternatives page for Plancheite for a ranked list with scores. Top alternatives include: Benitoite, Shattuckite, Larimar.
How does Plancheite compare to Benitoite?
See our detailed comparison of Plancheite vs Benitoite with scores, features, and an AI-powered verdict.
Is Plancheite worth it in 2026?
With a score of 4.14/10, Plancheite is a solid option in Gemstone. See all Gemstone ranked.
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