amygdule中文什么意思

小杏仁孔

小杏仁体

小杏仁子

杏仁孔

• pipe amygdule:    筒状杏仁体

百科释义

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.