hypabyssally
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hypabyssally — adverb see hypabyssal … New Collegiate Dictionary
hypabyssal — adjective Etymology: International Scientific Vocabulary Date: 1895 of or relating to a fine grained igneous rock usually formed at a moderate distance below the surface • hypabyssally adverb … New Collegiate Dictionary
Llanite — is a hypabyssally intruded rhyolite with phenocrysts of microcline and euhedral quartz. The quartz crystals are blue hexagonal bipyramids. The unusual blue coloration of the quartz is thought to be due to ilmenite inclusions (Zolensky, et al.… … Wikipedia