China Said to Widen Its Embargo of Minerals – NYTIMES.com
HONG KONG — China, which has been blocking shipments of crucial minerals to Japan for the last month, has now quietly halted shipments of those materials to the United States and Europe, three industry officials said on Tuesday.
Rare Earth Mineral
So what is a Rare Earth Mineral
A rare earth mineral is a mineral which contains one or more rare earth elements as major metal constituents. Yttrium is found in almost all rare earth minerals. Rare earth minerals are usually found in association with alkaline to per-alkaline igneous complexes, in pegmatites associated with alkaline magmas and in or associated with carbonatite intrusives. Perovskite mineral phases are common hosts to rare earth elements within the alkaline complexes. Mantle derived carbonate melts also are carriers of the rare earths. Hydrothermal deposits associated with alkaline magmatism contain a variety of rare earth minerals.
The majority of rare earth minerals are mined in Asia, with China producing 93 percent of the world’s supply, and more than 99 percent of the most valuable supply. – Wikipedia
So where is it used?
Yttrium (
/ˈɪtriəm/ IT-ree-əm) is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanoids and has historically been classified as a rare earth element. The most important use of yttrium is in making phosphors, such as the red ones used in television cathode ray tube displays and in LEDs.[5] Other uses include the production of electrodes, electrolytes, electronic filters, lasers and superconductors; various medical applications; and as traces in various materials to enhance their properties. Yttrium has no known biological role, but exposure to yttrium compounds can cause lung disease in humans.[6] – Wikipedia
Posted by Ahmed Hassan