tuff

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

作者在赋矿层中首次发现了层状电。

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,海拉尔盆地碳钠铝存在于火山凝灰或沉积凝灰中,常与柯绿泥和钠板共生,形成凝灰质特征标型矿物组合。

Subaqueous volcanic rocks mainly comprise glassy lava, crystal vitric bedded/sedimentary tuff, bentonite/illite/montmorillonire/zealite.

常具枕状、球状构造，水平层理、粒序层理、形层理；

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凝灰原地水解形成膨润土矿床,矿床具中型规模。