Discovery of diamonds in the south-western uzbekistan

摘要

The paper reports the finding of diamonds in thesouth-west of Uzbekistan in connection with unusual diamond-bearing rocks: lamprophyres and schoenkinite-porphyres formingdykes and pipes. They contain xenolites both of host rocks andsome deep set rocks unknown in the region on the surface level:ultrabasites and eclogitized gabbro. There are also chromspinelides,chromdiopside, chromium-bearing olivinge and moissanite inxenolites. The paper displays data on morphology of the diamondcrystals, their x-ray powder pattern, microphotographs(electronimages) of diamonds. It is shown that the diamond-bearing deepxenolites are related to the new non-kimberlite type of rocks—lamprophyres of a camptonite-monchikite composition and/or shoninite-porphy-rites.