For sinter with 25% and 50% MAC fines the iron oxides mainly consisted of hematite and magnetite, the bonding phase were mainly dicalcium silicate, glassiness, and a few amount of calcium ferrite.

配比为25%和50%的两种烧结中氧化物均以赤、为主，粘结相主要以酸钙、硅酸二钙和玻璃为主，但酸钙数量不多。

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.

浙江省长兴县赵村是由富含火山玻璃的凝灰岩原地水解蚀变形成的床,床具中型规模。

Perlite, obsidian and pitchstone are volcanic glass having the same compositions commonly with rhyolite as well as andesite and basalt.

珍珠岩、黑耀岩和松脂岩等玻璃熔岩以酸性为主，中基性者也常见。