新疆可可托海绿柱石猫眼矿物学特征及其开发探讨

MINERALOGICAL CHARACTERISTIC OF KEKETUOHAI CAT'S-EYE AQUAMARINE IN XINJIANG AND ITS EXPLOITATION

在绿柱石的各个品种当中 ,绿柱石猫眼是比较独特的一个品种 ,经济价值较高。其内部因含有大量的定向排列的气液包体 ,所以在定向切割的弧面宝石中会出现猫眼效应。新疆阿尔泰可可托海地区产出大量的淡黄色、淡绿色、淡蓝色绿柱石猫眼。通过化学全分析、显微硬度仪、X光粉晶衍射、红外光谱、拉曼光谱对该地绿柱石猫眼的物理性质、化学成分、物质的结构、绿柱石分子中的结构水、内部包体的赋存状态、气液包体的化学成分进行了详细的研究和分析。同时计算出了晶体化学式、晶胞参数。为该地区绿柱石猫眼的研究和开发提供了较为系统和详细的资料。通过对其内部结构的认识 ,进行了改色和优化试验 ,获得了该绿柱石的宝石改善的新品种。

Cat's-eye aquamarine is a very special species among beryls and has a high value. The cat's-eye appears because there are many gas-liquid inclusions array in a certain direction. A lot of light green, light yellow and light blue cat's-eye aquamarine has been found in Keketuohai, Xinjiang. According to the detailed analyses and examinations of X-ray, micro-hardness test, infrared spectrum, Raman spectrum etc., chemical and physical characteristic, inner structure, inclusion distribution and compositions, and the OH state were systemically studied. These studies have important significances for the application and exploit of this mineral. Irradiation and heat-treatments of cat's-eye aquamarines have also been studied.