ペグマタイト
1. pegmatite
2. PegmatiteA pegmatite is a very crystalline, intrusive igneous rock composed of interlocking crystals usually larger than 2.5 cm in size; such rocks are referred to as pegmatitic. Most pegmatites are composed of quartz, feldspar and mica; in essence a granite. Rarer intermediate composition and mafic pegmatites containing amphibole, Ca-plagioclase feldspar, pyroxene and other minerals are known, found in recrystallised zones and apophyses associated with large layered intrusions.
Read “Pegmatite” on English Wikipedia
Read “ペグマタイト” on Japanese Wikipedia
Read “Pegmatite” on DBpedia
Read “Pegmatite” on English Wikipedia
Read “ペグマタイト” on Japanese Wikipedia
Read “Pegmatite” on DBpedia
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