sillimanite
/sil-uh-muh-nahyt/US // ˈsɪl ə məˌnaɪt //UK // (ˈsɪlɪməˌnaɪt) //
矽利曼石,菱锰矿,小叶紫檀,菱形石
Definitions
n.名词 noun
- 1
- : a mineral, aluminum silicate, Al2SiO5, occurring in the form of long, slender, and often fibrous crystals.
Examples
In mica-gneisses sillimanite, kyanite, andalusite and garnet may occur.
Sillimanite usually forms exceedingly minute needles embedded in quartz.
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