Hornfels, skarnization, troilite and gold mineralization were formed in their contact segment.
接触部位形成角岩、矽卡岩化，并发生磁铁矿、硫铁矿及金矿化。
2
The sulfide (especially troilite) contained in coal seams is representative a kind of strong reducing environment.
煤层中含有硫化物（特别是硫铁矿），代表一种强的还原环境。
3
The Lujiang meteorite, a chondrite whose petrochemical type is LL6, contains the following opaque minerals: kamacite, taenite, disordered taenite, troilite, chromite, hematite, ilmenite. etc.