New plate stone sand is higher , calcium and pyrite is more , lithologic hard .

新型板石含砂较高，含钙及黄铁矿较多，岩性坚硬。

Summary of china 's large-scale sulphuric acid plants based on sulphur and pyrite ( to be continued )

我国硫磺和硫铁矿制酸大型装置综述(待续)

Marls containing pyrite with the level of laminae .

具水平纹层含黄铁矿泥灰岩。

The reaction between pyrite and anfo is prevented .

黄铁矿与铵一油炸药之间的反应被阻止了。

Table 2 eds analysis of the pyrite microcrystals .

黄铁矿微晶的能谱分析。