“霏细岩”的英语？

富于 硅氧 的岩流及罗依山霏细岩的喷出作用占据了广大面积.The extrusion of silica - rich lava, the Rooiberg felsite, occurred on a grand scale.矿体赋存在燕山期变质流纹斑岩、霏细岩中.The ore bodies are confined to Yanshanian metamorphosed rhyolite porphyry and felsite....

“霏细岩”的拼音为：fēi xì yán...