This paper deals with the chemical compositions,mineral components,and micro-texture of agate,which comprise the colors and circular texture of the agate.

• 通过对玛瑙的化学成分、矿物成分和显微结构的分析研究,阐述微量化学元素、微量矿物成分及显微结构与玛瑙的颜色和环带构造之间的关系,揭示和探讨玛瑙颜色与纹环带形成的机理。