各色独山玉的矿物组合研究

我国河南南阳市郊独山所出产的独山玉是中国古代"四大名玉"之一,也是迄今为止世界上唯一发现达到宝石工艺要求的黝帘石化斜长岩质(少数为斜长黝帘岩或细粒斜长角闪岩等)玉种。独山玉属复杂的多矿物集合体,色杂是其重要特征之一,弄清各色(品种)独山玉矿物组合特征对全面研究独山玉具有十分重要的意义。本文查清了独山玉中的矿物种属及其相应的生成顺序,首次确认了独山玉中榍石、电气石和葡萄石的存在。此外,还对各色(品种)独山玉的外观特征、主要和次要矿物、结构等做了详尽的描述,特别是对其中的矿物组合特征做了具体的分析。

Mineral combinations of diversiform Dushan Jade

Dushan Jade, called "Nanyang Jade" or "Du Jade" in business circle, is named after the place of its origin, i.e., the Dushan Mountain in the suburbs of Nanyang City, Henan Province. As one of the most widely used jade enjoying a long application history, Dushan jade plays an important role in Chinese jade culture, and holds a unique position in Chinese colorful and magnificent jade culture. Dushan Jade is indispensable in Chinese gem industry because of its good quality and rarity. Dushan Jade is in a unique class in the world with high research and economic value as well as art level. Dushan Jade is the only zoisite-plagioclase in the world which can meet jewelry technologic requirements. Multicolor is one of the important characteristics of Dushan Jade. This paper deals with the mineral species, paragenetic order and correlative speciality of Dushan Jade. The authors have affirmed the existence of sphene, tourmaline and prehnite in Dushan Jade. Besides, the appearance, the main minerals and minor minerals, and the structures of Dushan Jade are described in detail and, what is more, the mineral combinations characteristics of Dushan Jade are analyzed concretely.