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1981年7月笔者在广东省乐昌县云岩钨锡矿区采集的重砂样品中,在锡石表面见到一种浅黄色次生矿物.经X射线粉晶分析,属于Schoenfliesite族未定名
In July 1981, the author saw a light yellow secondary mineral on the surface of cassiterite in the heavy sand samples collected from the Yunyan tungsten-tin mining area in Lechang County, Guangdong Province. The X-ray powder crystal analysis belongs to the unspecified Schoenfliesite family