000217699 000__ 01307cam\a2200337Ia\45e0 000217699 001__ 217699 000217699 005__ 20220217104104.0 000217699 007__ he\bmb024bbca 000217699 008__ 990610s1990\\\\couab\\\bb\\\f000\0\eng\d 000217699 035__ $$a(OCoLC)28267589 000217699 035__ $$a217699 000217699 040__ $$aGP1$$cGP1$$dGPO 000217699 043__ $$aa-cc-im 000217699 049__ $$aISEA 000217699 074__ $$a0624-H (MF) 000217699 0860_ $$aI 19.76:90-538 000217699 24500 $$aOrigin and ages of mineralization of Bayan Obo, the world's largest rare earth ore deposit, Inner Mongolia, China$$h[microform] /$$cE.C.T. Chao ... [et al.]. 000217699 260__ $$a[Denver, Colo.?] :$$bU.S. Dept. of the Interior, U.S. Geological Survey,$$c[1990?] 000217699 300__ $$a9 p. :$$bill., map ;$$c28 cm. 000217699 4901_ $$aOpen-file report ;$$v90-538 000217699 500__ $$aCover title. 000217699 500__ $$aDistributed to depository libraries in microfiche. 000217699 504__ $$aIncludes bibliographical references (p. 7). 000217699 533__ $$aMicrofiche.$$b[Denver, Colo. :$$cU.S. Geological Survey,$$d1992?]$$e1 microfiche : negative. 000217699 650_0 $$aRare earth metals. 000217699 650_0 $$aGeology, Stratigraphic$$yProterozoic. 000217699 650_0 $$aOre deposits$$zChina$$zInner Mongolia. 000217699 650_0 $$aMines and mineral resources$$zChina$$zInner Mongolia. 000217699 7001_ $$aChao, E. C. T. 000217699 7102_ $$aGeological Survey (U.S.) 000217699 830_0 $$aU.S. Geological Survey open-file report ;$$v90-538. 000217699 85230 $$bdfich$$hI 19.76:$$i90-538 000217699 909CO $$ooai:library.usi.edu:217699$$pGLOBAL_SET 000217699 980__ $$aBIB 000217699 980__ $$aGOV RESOURCE