翡翠：德国里斯陨石坑中由奥长石经冲击形成。

Jadeite: shock-induced formation from oligoclase, ries crater, Germany.

作者信息

James O B

出版信息

Science. 1969 Sep 5;165(3897):1005-8. doi: 10.1126/science.165.3897.1005.

DOI:10.1126/science.165.3897.1005

Abstract

Jadeite (high-pressure sodium aluminum pyroxene) has been identified in a shock-phase assemblage of oligoclase. The shock assemblage consists of minute particles with high refractive indices that contain at least two phases: one (identified by x-ray) is a jadeite that is nearly pure NaAlSi(2)O(6); the other has the chemical composition of oligoclase minus jadeite and appears to be largely amorphous.

摘要

在奥长石的冲击相组合中已鉴定出硬玉（高压钠铝辉石）。该冲击组合由具有高折射率的微小颗粒组成，这些颗粒至少包含两个相：一个相（通过X射线鉴定）是几乎纯的NaAlSi₂O₆的硬玉；另一个相具有奥长石减去硬玉后的化学成分，并且似乎主要是无定形的。