REE Distribution Characteristics And Mineralization Analysis Of Alkaline Ultrabasic Carbonatite Igneous Complex In Qieganbu-lake, Xinjiang

The REE is an important mineral type, The countries of important strategicmineral resources.REE in the alkaline ultrabasic-carbonatite complex is extremely important REEdeposit types. Qieganbulak ultrabasic-carbonatite complex located in the northeastedge of the Tarim plate and southeast of Kuruktag side.By previous geological datacollection and research, ultrabasic-carbonatite complex is an atypicalultrabasic-carbonatite complex And carbonatite ΣREE is high in808.28×10^-61709.28×10^-6.Especially carbonatite apatite ΣREE up the3580×10^-6,Enrichmentof REE and apatite are closely related.Various types of rock total REE trend isgradually increased from peridotite, pyroxenite, carbonatite LREE/HREE rangedfrom9.21to138.13REE patterns are consistent with right-wing indicating that the LREEenrichment, which may be volatile ingradually increased in the magma evolution.Isochron of Sm-Nd isotopic dating of802Ma, and deposits in the geologicalformation conditions compared with domestic and foreign well-known REE depositthat the rock is enriched REE, and LREE enrichment mineralization in a favorablegeological environment.Through the collection of information on the study area, Field research, thedivision of rock types, the analysis of major and trace elements, Thin slices of planepolarized light microscopy, REE contents in the content of the REE elements in avariety of rock types, mineral, Combined with the current rare earth elementsmineralization theory to conclude as follows:1,A complex body REE is mainly enriched in LREE and LREE/HREE rangedfrom9.21-138.132, LREE enrichment and of P₂O₅and CaO are closely related.3,LREE are mainly distributed in the containing apatite calcite carbonatitedyke, Rich in LREE mineral apatite, followed by containing apatite calcitecarbonatite have to calcite and a small amount of monazite4,Igneous Complex rocks to generate the sequence：Serpentinite-biotitediopside rock-phlogopite Rock-containing olivine phlogopite carbonatite-containing apatite calcite carbonatite,Studies have shown that REE elementsgradually increased early to late with magma evolution process5,The rock REE has reached the degree of mineralization, with further work value...