felsitic
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Felsitic — Fel*sit ic, a. relating to, composed of, or containing, felsite … The Collaborative International Dictionary of English
felsitic — adjective see felsite * * * felsitic / sitˈik/ adjective Consisting of a fine patchy mosaic of quartz and feldspar (also felˈsic) • • • Main Entry: ↑felsite … Useful english dictionary
felsitic — adjective see felsite … New Collegiate Dictionary
felsitic — fel·sit·ic … English syllables
felsite — felsitic /fel sit ik/, adj. /fel suyt/, n. a dense, fine grained, igneous rock consisting typically of feldspar and quartz, both of which may appear as phenocrysts. [1785 95; FELS(PAR) + ITE1] * * * … Universalium
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
felsite — noun Etymology: felspar + ite Date: 1794 a dense igneous rock consisting almost entirely of feldspar and quartz • felsitic adjective … New Collegiate Dictionary
Dacite — Aphanitic QAPF diagram denoting daci … Wikipedia
Spherulite — Spherulites, in petrology, are small, rounded bodies that commonly occur in vitreous igneous rocks. They are often visible in specimens of obsidian, pitchstone and rhyolite as globules about the size of millet seed or rice grain, with a duller… … Wikipedia
Halleflinta — Hälleflinta (a Swedish word meaning rock flint), a white, grey, yellow, greenish or pink, fine grained rock consisting of an intimate mixture of quartz and feldspar.Many examples are banded or striated; others contain porphyritic crystals of… … Wikipedia
