a crystalline mineral consisting of silicate of aluminum and sodium that occurs in the form of small crystals in many igneous rocks.
“nepheline”词性变化补充纠错
名词
“nepheline”用法和例子补充纠错
1. Nepheline is commonly found in igneous rocks such as granite and syenite.
2. The presence of nepheline can be used as an indicator of certain types of volcanic activity.