miarolitic cavity

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Miarolitic cavity — Miarolitic cavities (or miarolitic texture) are typically crystal lined irregular cavities or vugs most commonly found in granitic pegmatites, but also found in a variety of igneous rocks. The central portions of pegmatites are often miarolitic… … Wikipedia
miarolitic — |mēərō|lid.ik adjective Etymology: International Scientific Vocabulary miaro (from Italian dialect miarolo granite with small cavities) + litic 1. of igneous rock : characterized by irregular cavities into which well formed crystals project… … Useful english dictionary
Lamprophyre — Lamprophyres (Greek λαµπρός (lamprós) = bright and φύρω (phýro) = to mix) are uncommon, small volume ultrapotassic igneous rocks primarily occurring as dikes, lopoliths, laccoliths, stocks and small intrusions. They are alkaline silica… … Wikipedia
Druse (geology) — For other uses, see Druse. Druse of uvarovite from the Urals (size: 18.3 x 13.1 x 2.0 cm) … Wikipedia

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