n.角石...

hornstone的音标：hornstone的英式发音音标为：['hɔ:nstəʊn]hornstone的美式发音音标为：['hɔnˌstoʊn]...

Dongfengshan gold deposit is occurred in hornstone of Dongfengshan group under iron bearing stratum.东风山金矿体赋存在含铁层之下的东风山群角岩层中....