In petrography, pegmatite is medium to coarse grained and is also composed of lepidolite, quartz, alkali feldspar, muscovite and opaque minerals. Lepidolite is in the form of tabular to platy, laths to euhedral crystals, medium to coarse grained and is also displaying nicely developed parallel twinning (Determine two(D)). It occurs https://nazimh368nfw1.estate-blog.com/profile