Lamprophyre, Magmatic, Grenville, Quebec Lamprophyre is a porphyritic igneous rock consisting of a fine-grained feldspathic groundmass with phenocryst

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Lamprophyre, Magmatic, Grenville, Quebec Lamprophyre is a porphyritic igneous rock consisting of a fine-grained feldspathic groundmass with phenocrysts chiefly of biotite.

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Photo credit: © Phil Degginger / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: feldspathic, fine-grained, grenville, igneous, intrusive, lamprophyre, mafic, magmatic, porphyritic, quebec, rock, rocks, ultrapotassic