Any of a class of ultramafic mantle-derived volcanic rocks that have a high magnesium content(noun)
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Use "komatiite" in a sentence
"Nature journal that a rare form of magmatic rock known as komatiite was formed in the earth's mantle at temperatures around 1700°C in the Archaean age, more than 2700 million years ago."
"The project is also considered prospective for both intrusion-related (Ni-Cu-PGE) and komatiite flow-related Ni-sulphide mineralisation."
"The Gum Creek Project is considered prospective for intrusion-related (Ni-Cu-PGE), komatiite flow-related (Ni) sulphide mineralisation and iron ore."