四川平武雪宝顶绿柱石的振动光谱

自然界中绿柱石晶体多为柱状，具板状晶形的绿柱石非常少见。对产 于四川雪宝顶 云英岩晶洞中的无色透明板状绿柱石及产于雪宝顶蒲口坡石英脉中的绿柱石进行了红外和拉 曼光谱分析，并与产于阿尔泰三号伟晶岩脉中的柱状绿柱石进行了比较。雪宝顶两个绿柱 石的结构通道中的水以II型水为主，而阿尔泰绿柱石结构通道中的水以I型水为主。雪宝顶 绿柱石中Li对Be的替换也对它的红外及拉曼光谱造成了影响。

Vibrational Spectra of Beryl from Xuebaoding, Pingwu County, Sichuan Province

The natural beryl crystals are commonly prismatic. The t ab ular ones are rarely observed. In this paper is given an example of tabular cry stal of beryl from the Xubaodi ng greisen, which merits a study of IR and Raman spectra and comparisons with tw o prismatic crystal samples of beryl from Xuebaoding quartz vein and Altai pegma tite. Both the tabular and prismatic beryls from Xubaoding are rich in Li and Na, their IR and Raman spectra are very similar, and the channel occupied water is mainly of type II, while the channel occupied water for Altai pegmatite is ma inly of type I. Spectral difference between beryl from Xuebaoding and that from Altai is mainly due to the replacement of Be by Li,which is in fact more strong in beryl from Xuebaoding.