01476nam a2200325Ia 4500001000700000003000500007005001700012008004100029010001500070040001800085043001200103050002400115082002300139086001700162245018400179260010500363300002800468490005900496500017200555500003300727504005200760650003500812650003200847650004000879700004400919700004000963710004901003710005001052710004801102218467BIBL20160527200125.0980116s1998    dcua     b   f000 0 eng    a 98010121   aDLCcDLCdDLC  ae-po---00aQE516.R2bG435 199800a553.4/94/094692210 aI 19.16:159600aGeochemical studies of rare earth elements in the Portuguese Pyrite Belt, and geologic and geochemical controls on gold distributioncedited by David J. Grimes and S.J. Kropschot.  aWashingtonbU.S. G.P.O.aDenver, CObFor sale by U.S. Geological Survey, Information Servicesc1998.  aiv, 40 p.bill.c28 cm. 0aU.S. Geological Survey professional paperv15962Local  a"Prepared with the support and cooperation of the Luso American Development Foundation, the Serviços Geológicos de Portugal, and the Serviço de Fomento Mineiro."  aTwo folded plates in pocket.  aIncludes bibliographical references (p. 28-29). 0aGeochemistryzPortugal.2Local 0aGold oreszPortugal.2Local 0aRare earth metalszPortugal.2Local1 aGrimes, D. J.q(David J.)d1943-2Local1 aKropschot, S. J.q(Susan J.)2Local2 aLuso-American Development Foundation.2Local1 aPortugalbServiço de Fomento Mineiro.2LEMB2 aServiços Geológicos de Portugal.2Local