Last Updated：2025/11/20

A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

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pegmatite

Source Word

pegmatite

Noun

A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

Japanese Meaning

長石や石英を主成分とし、通常、白雲母または黒雲母を含む、粗大結晶の火成岩・深成岩の一種

The geologist carefully sampled the pegmatite vein to analyze its large feldspar and quartz crystals.

地質学者は、長石と石英を主成分とし、通常白雲母などの鱗片鉱物を含む粗粒の深成岩の脈を注意深く採取して、その大きな長石や石英の結晶を分析した。

Sense（1）

A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

pegmatites

（ plural ）