| http://www.w3.org/ns/prov#value | - Some older analyses show the presence of small amounts of NJ, Co, and Cu, but these are almost invariably found to reflect the presence of tiny exsolved grains of such minerals as chalcopyrite and pentlandite.Ilmenite is now largely preserved as skeletal crystals in which exsolved magnetite lamellae have been altered, and the ilmenite itself partly altered to sphene.Notable occurrences of this inc
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