Graphite archaically referred to as plumbago, is a crystalline allotrope of carbon, a semimetal, . Minerals associated with graphite include quartz, calcite, micas and tourmaline. In meteorites it occurs .. massive mineral form. Both of these names arise from confusion with the similar-appearing lead ores, particularly galena.
ChatGraphite archaically referred to as plumbago, is a crystalline allotrope of carbon, a semimetal, . Minerals associated with graphite include quartz, calcite, micas and tourmaline. In meteorites it occurs .. massive mineral form. Both of these names arise from confusion with the similar-appearing lead ores, particularly galena.
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