The Conversation (0)
Kidela.com reported on Stans Energy Chair Meets Kyrgyz President Otunbayeva:
Kidela.com reported on Stans Energy Chair Meets Kyrgyz President Otunbayeva:
From the initial discovery of the REEs in the late 1700s through the mid-1950s, a few of the REEs were produced in modest amounts from monazite-bearing placers and veins, from pegmatite’s and carbonatites, and as minor byproducts of uranium and niobium extraction. During this time, the middle and heavy REEs generally were available in pure form only in sub-kilogram quantities and were chiefly chemical curiosities.