一种罕见的铍矿物—红磷锰铍石

红磷锰铍石是一种很罕见的铍磷酸盐矿物,在国外,目前仅知发现于芬兰等几个国家,其量也极少。我国是1984年首次发现于福建南平花岗伟晶岩田中的白云母—钠长石—锂辉石型伟晶岩中,沿粗粒原生绿柱石中的微裂隙分布,是伟晶岩形成晚期热液蚀变作用的产物。本文较系统地研究了南平伟晶岩中红磷锰铍石的矿物学特征,包括产状及共生组合、物性及光性、化学成分、X射线衍射特征和红外吸收光谱分析等,最后概述了该矿物的鉴定特征。

Vayrynenite,A Rare Beryllium Mineral

Vayrynenite, a very rare beryllium mineral, has been recognized only in a few localities abroad (e. g. in Viianiemi pegmatite, Fihland). In China, themineral was first found by the authors in 1984. Occurring within the quartz-muscovite-spodumene pegmatite (Type IV ) of the Nanping rare metal gra-nite pegmatite field, Fujian Province, it can be seen in fissures of coarse pri-mary beryl, being a product of late hydrothermal activity of the pegmatite.This paper systematically studies mineralogy of the Nanping vaeyrynenite,including its mode of occurrence, paragenetic association, physical and opti-cal properties, chemical composition, X-ray diffraction pattern and infraredabsorption spectrum. The distinctive features of this mineral for its identifi-cation are also indicated.