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Rhenium Rubidium

They detected rhenium spectroscopically in platinum ores and in the minerals columbite fe, mn, mgnb, ta 2 o 6, gadolinite ce, la, nd, y 2 febe 2 si 2 o 10 and molybdenite mos 2.Rhenium is present in these materials only in trace amounts.In 1928, noddack and berg were able to extract 1 gram of rhenium from 660 kilograms of molybdenite.

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