n. 燧石,黑硅石
网络 黑硅石; 黑矽石; 眼球状燧石
Paleontologists know chert as a good place to look for fossils.
古生物学家以黑硅石为化石采集地点的标志。
Thus we can better understand the deformation of chert in a highly fluid form.
这样我们就能更好地理解燧石在高度流体状态时的变形情况。
Chert with good abrasion the major content in conglomerate and diamonds are contained in it generally.
砾岩主要砾石成分为燧石,磨圆度较好,普遍含金刚石。
The thin-beded siliceous -rocks include chert and depositional quartz with textures of oolite and pebble.
矽质岩包括燧石和沈积石英岩,呈薄层状产出,沈积石英岩具鲕状、砾状结构。
Chert with good abrasion is the major content in conglomerate, and diamonds are contained in it generally.
砾岩主要砾石成分为燧石,磨圆度较好,普遍含金刚石。