This paper investigated the law of KPB crystaltwinning using microcrystallography, chemical etching and optical method.
本文采用显微结晶、化学浸蚀和光学方法研究了KPB晶体的孪生规律。
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Crystaltwinning patterns in a leucite crystal from volcanic rock, observed in polarized light by Dr. Michael M. Raith of the Steinmann Institut, University of Bonn, Bonn, Germany. Dr.