调查分析表明：残坡积物与强风化基岩是碎屑流滑坡的物质基础；
Investigation indicates that: talus material, residual deposit and strong weathering bedrock are material base of clastic flow landslide;
绿碧玺由某农民于1992年在广西某地花岗岩体的残坡积物中发现。
The green tourmaline was discovered in weathethered mantle of a granite body somewhere inGuanxi by a preasant in 1992. It is a magnesian tourmaline by identification.
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