特殊用法biogenic chert1.生物(成因)燧石bone chert1.骨状燧石inorganic chert1.无机(成因)燧石nodular chert1.【地质】结核状燧石Rhynie chert1.【地质】莱尼埃燧石层sandy chert1.砂质燧石white chert1.白燧石