单词greisen
n.: 【地】云英岩
网络: 可调接触；英云岩；格雷森
【地质学;地理学】云英岩
Although there are 60 tin-bearing greisen veins, only a few of them form the main ore bodies.
共圈出含锡云英岩脉60余条，但主矿体却只有少数几条。
Structural ore-controlling characteristics of the greisen body-type tungsten-tin mineralization in Da"ao area, Hunan province
湖南大坳矿区云英岩体型钨锡矿化构造控矿特征