amygdule

amygdule读音音标

英 [ə\'mɪɡdju:l]

美 [ə\'mɪɡdjul]

amygdule意思解释

n.

杏仁孔；

英英释义

Amygdules or amygdales form when the gas bubbles or vesicles in volcanic lava (or other extrusive igneous rocks) are infilled with a secondary mineral such as calcite, quartz, chlorite or one of the zeolites. Amygdules usually form after the rock has been emplaced, and are often associated with low-temperature alteration.