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macrocrystalline : ウィキペディア英語版 | macrocrystalline
In geology, macrocrystalline rocks have crystals large enough to easily be identified by sight. Macrocrystalline or phaneritic texture is common in intrusive igneous rocks which cooled slowly enough for crystal growth. Pegmatites are noted for very large crystal size. Rocks with crystals requiring microscopic or X-ray analysis for identification are termed microcrystalline or cryptocrystalline.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「macrocrystalline」の詳細全文を読む
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