一种解释为块云母是由极细粒的绢云母组成的块状致密岩石，加热后转化为多铝红柱石，用作耐火原料。
n. pinite ; agalmatolite
misc. block mica
块云母类似云母的灰色、绿色或棕色矿物，由其它矿经化学变化形成，如。
A gray, green, or brown mineral similar to mica, formed by chemical alteration of other minerals, such as cordierite.
块云母类似云母的灰色、绿色或棕色矿物，由其它矿经化学变化形成，如堇青石。
A gray, green, or brown mineral similar to mica, formed by chemical alteration of other minerals, such AS cordierite.
锂云母就是我用了10年的一块水晶，我把它放在枕头下来防有害电子辐射的。
Lepidolite (in mica form) is a crystal I have used for around 10 years (under my pillow) to protect myself some harmful electromagnetic radiation.
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