Kosmatite is a mineral, which may also be known as komatiite.^[1] It occurs at least in North Macedonia. It may or may not contain clintonite or margarite.^[2] Near the city of Prilep in the marble series of the Pelagonian Metamorphic Complex the Sivec quarry provides white dolomite marble; within this matrix can be found some very rare silicates including phlogopite, cyrnrite and kosmatite.^[3]

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