“bastnaesite”的意思、由来-百科全书

bastnaesite

mineral

also spelled Bastnäsite,

a cerium fluoride carbonate, CeCO₃(OH,F), found in contact metamorphic zones and pegmatites; cerium is commonly substituted by light rare earths, lanthanum, yttrium, and thorium. It ranges in colour from wax-yellow to reddish-brown. Bastnaesite is commonly associated with other rare-earth-bearing minerals such as allanite, cerite, and tysonite; it is often an alteration product of tysonite. Bastnaesite occurs in pegmatites near Pikes Peak, Colo. and with fluorite in Lincoln County, New Mexico; it is commercially mined at Mountain Pass, Calif. For detailed physical properties, see carbonate mineral (table).

词条	bastnaesite
释义	bastnaesite mineral also spelled Bastnäsite, a cerium fluoride carbonate, CeCO₃(OH,F), found in contact metamorphic zones and pegmatites; cerium is commonly substituted by light rare earths, lanthanum, yttrium, and thorium. It ranges in colour from wax-yellow to reddish-brown. Bastnaesite is commonly associated with other rare-earth-bearing minerals such as allanite, cerite, and tysonite; it is often an alteration product of tysonite. Bastnaesite occurs in pegmatites near Pikes Peak, Colo. and with fluorite in Lincoln County, New Mexico; it is commercially mined at Mountain Pass, Calif. For detailed physical properties, see carbonate mineral (table).
随便看	Ethiopia Ethiopia, flag of Ethiopian chant Ethiopianism Ethiopian literature Ethiopian Orthodox church Ethiopian Plateau Ethiopian region Ethiopic alphabet Ethio-Semitic languages ethnic cleansing ethnic group ethnobotany ethnography ethnolinguistics Ethnological Museum ethnomusicology ethology treated gem treaties of Altranstädt Treaties of Banaras treaties of Brest-Litovsk Treaties of Fort Stanwix Treaties of Nijmegen Treaties of Paris