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Gallium is a chemical element; it has the symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875, [13] gallium is in group 13 of the periodic table and is similar to the other metals of the group (aluminium, indium, and thallium).
Gallium and germanium are used in semiconductors, while germanium is also used in infrared technology, fibre optic cables and solar cells. ... Many countries will try to find antimony deposits ...
China announced Tuesday it is banning exports to the United States of gallium, germanium, antimony and other key high-tech materials with potential military applications, as a general principle ...
Gold mining began at the site in 1936, but the rare earth deposits were not discovered until 1949 when prospectors in search of uranium noticed anomalously high radioactivity. [9] [3] Molybdenum Corporation of America bought most [10] of the mining claims, and began small-scale production in 1952. Mountain Pass mine, mill, shop & offices in 2010
The classification of lead-zinc deposits in particular has been varied and resulted in a number of different organizations schemes. [1] The term "polymetallic ore" also includes nodules, principally Manganese nodules, that do not form as terrestrial deposits but as concretions on the ocean floor. [3] [4]
"The (Defense) Department is proactively taking steps using Defense Production Act Title III authorities to increase domestic mining and processing of critical materials for the microelectronics ...
The elements are more abundant in sphalerite from ore deposits with lower formation temperatures, such as Mississippi Valley-type deposits. The Middle and East Tennessee zinc mines are Mississippi Valley-type. Cadmium recovered in zinc smelting is the only commercial source of cadmium. Gallium and germanium are also recovered some from other ...
Leaders of states in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their natural resources, history, tourism, etc. Not every state has an official state mineral, rock, stone and/or gemstone, however.