Craignurite (Q43548)

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A local Hebridian name for a series of volcanic rocks occurring as cone sheets and ranging in composition from intermediate to acid, characterized by acicular and skeletal crystals of plagioclase, augite and hornblende in a felsic groundmass
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English
Craignurite
A local Hebridian name for a series of volcanic rocks occurring as cone sheets and ranging in composition from intermediate to acid, characterized by acicular and skeletal crystals of plagioclase, augite and hornblende in a felsic groundmass

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