tuff

The ore-bearing rock is composed mainly of andesitic tuff and tuffite.

在赋矿层中首次发现了层状电气石。

The extrusive rock unit includes basalt, andesite, boninite and albitite as well as breccia and tuff.

喷出单元不由玄武组成，还包括安山、玻安、钠长以及角、灰等。

The first rock is mainly andesite clinkering agglomerate, andesite breccia, dacite breccia, rhyolite breccia and rhyolite clinkering tuff.

正常火山碎屑亚类石类型主要为安山质熔结集块,安山质、英安质及流纹质火山角以及流纹质熔结灰。

Zhaocun bentonite deposit oringnated from tuff rich in volcanic hyalocrystalline,which underwent hydrolysis and alteration in Changxing county,Zhejiang province.The deposit has middle scale.

浙江省长兴县赵村膨润土矿是由富含火山玻璃质的灰原地水解蚀变形成的膨润土矿床,矿床具中型规模。

Research shows that the dawsonite in Hailaer Basin exists in both the eroded volcano tuff and sedimentary volcano tuff,and is paragenous with corrensite and allevardite frequently.

研究表明,海拉尔盆地的碳钠铝石存在于火山灰或沉积灰中,常与柯绿泥石和钠板石共生,形成灰质蚀变的特征标型矿物组合。