Graphite is identified in a particular schist . Which one
7) Graphite is identified in a particular schist. Which one of the following conclusions is justified? 7) A) The graphite lubricated shearing movements along a fault, causing a schist to form. B) The premetamorphic rock was a shale or mudstone containing organic matter. C) The schist formed from a quartzrich, sedimentary limestone. D) The rock also contains diamonds; both are crystalline