硅化凝灰岩 meaning in English
silicified tuff
Examples
- Xiongcun copper - gold ore deposit is located in gangdese metallogenetic belt with a large scale . the ore body mainly exists in the second lithoid unit ' s tuffs and the third lithoid unit ' s dacite tufa of the cretaceous volcanic stratum , which are not only mother rock but also mineralized body
雄村铜金矿床处于冈底斯成矿带，矿床规模巨大，矿体主要赋存于白垩系火山岩地层第二岩性单元的黄铁绢英岩化硅化凝灰岩和第三岩性单元英安质疑灰岩中，上述岩石既是赋矿围岩又是矿化体。