malchite

malchite

[′mal‚kīt]
(petrology)
A fine-grained lamprophyre with small, rare phenocrysts or hornblende, labradorite, and sometimes biotite embedded in a matrix of hornblende, andesine, and some quartz.
References in periodicals archive ?
The base of oxidation was logged at 426m depth and oxide mineralization comprises cuprite, azurite and malchite.