论文部分内容阅读
1.红色绿柱石——罕见的宝石级矿物在美国Utah Wah Wah山南部发现了一种罕见的宝石级矿物——红色绿柱石。这种宝石级矿物赋存在含有少量方锰铁矿(bixbyite)的火山流纹岩中,其化学特征是含有一些微量元素和分散元素,诸如Mn、Ti、Zn、Sn、Li、Nb、Sc、Zr、Ga、Cs、Rb、B、Pb等,而这些元素在正常绿柱石中是不存在的。红色绿柱石的光学常数为:折光率1.564—1.574,比重2.66—2.70,晶胞参数a_0=9.222,c_0=9.186,这些常
1. Red Beryl - Rare Gem-Like Minerals A rare gemstone - red beryl was discovered in the southern Utah Wah Wah Hills, USA. This gem-grade mineral is found in volcanic rhyolite containing a small amount of bixbyite and is characterized by the presence of trace elements and disperse elements such as Mn, Ti, Zn, Sn, Li, Nb, Sc, Zr, Ga, Cs, Rb, B, Pb, etc., and these elements are absent in normal beryl. The optical constants of red beryl are: refractive index 1.564-1.574, specific gravity 2.66-2.70, cell parameters a_0 = 9.222, c_0 = 9.186, these often