microgranitic

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microgranitic — microgranitˈic adjective • • • Main Entry: ↑microgranite … Useful english dictionary
Quartz-porphyry — Quartz porphyry, in petrology, is the name given to a group of hemi crystalline acid rocks containing porphyritic crystals of quartz in a fine grained matrix, usually of micro crystalline or felsitic structure. In specimens, the quartz appears as … Wikipedia

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