chalcedonic

常见例句

A siliceous rock of chalcedonic or opaline silica occurring in limestone.
矽石出現在灰巖中的玉髓或蛋白色矽石
This rock contained chalcedonic cement before it underwent diagenesis, a process where low temperatures and low pressures alter the content of sediments before they finally lithify, or turn into rock.
在它經歷成巖作用之前，它含有燧石質的膠結成分。成巖作用過程中，低溫觝壓改變了沉積物的成分，而後固結成巖。
a siliceous rock of chalcedonic or opaline silica occurring in limestone
出現在灰巖中的玉髓或蛋白色矽石
chalcedonic chert
玉髓狀燧石