peg·ma·tite /ˈpɛgməˌtaɪt/
偉晶岩
Peg·ma·tite n. Min. (a) Graphic granite. See under Granite. (b) More generally, a coarse granite occurring as vein material in other rocks.
◄ ►
pegmatite
n : a form of igneous rock consisting of extremely coarse
granite resulting from the crystallization of magma rich
in rare elements