atacamite

[at-uh-kam-ahyt, uh-tak-uh-mahyt]

noun

a mineral, hydrated chloride of copper, Cu2Cl(OH)3, occurring in a green, granular form: a minor ore of copper.

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Origin of atacamite

1830–40; named after Atacama Desert; see -ite¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018