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math, physics, and chemistry
:
geology
>
grease bloom
oily luster
一种特殊的非金属光泽。矿物表面不平滑,或表面虽平滑但矿物呈致密块状集合体产出时,因反射光发生散射而呈现出如同油脂般的光泽。
例如石英断口的光泽,还有许多玉石的光泽属此。