cordierite
n. [矿物] 堇青石
例句
It is one of the varieties of cordierite mineral.
它是世界上矿产品种堇青石。
The corona of cordierite between staurolite and gedrite.
十字石—铝直闪石之间的堇青石冠状体；
What do the underlined words "cordierite, calcite or tourmaline" mean?
下划线的“堇青石、方解石或电气石”是什么？
