HYDROTHERMAL PROCESS FOR GROWING CRYSTALS HAVING THE STRUCTURE OF BERYL IN HIGHLY ACID CHLORIDE MEDIUM

摘要

A hydrothermal process for growing relatively large macro-crystals having the structure of beryl. Growth takes place on seed crystals from an aqueous medium which has a chloride ion concentration of at least 4 molar and contains sufficient hydrochloric acid to give a final pH of not greater than 0.1.