◎ 围岩 wéiyán
(1) [country rock;surrounding rock]∶某地区常见的岩石(指矿体周围的岩石,有时也指岩浆侵入体周围的岩石)
(2) [wall rock]∶为断层脉所穿过的岩石;断层脉或矿床侧的岩石

1.{矿} wall rock; country rock; deads; surrounding rock