A new type of rare earth elements deposit in weathering crust of Permian basalt in western Guizhou, NW China

Cryptic sediment-hosted critical element mineralization from eastern Yunnan Province, southwestern China: Mineralogy, geochemistry, relationship to Emeishan alkaline magmatism and possible origin

“…The ELIP alkaline magmatism that occurred after the main phase basaltic volcanism are not only indicated by the Nb- Ta Province (Yang et al, 2007); and Ga-rich mineralized layers and REY mineralization occur in the lowest Xuanwei Formation, west Guizhou Province (Yang et al, 2008;Zhang et al, 2010aZhang et al, , 2010bZhou et al, 2013;Zhang et al, 2016). Such rare metal mineralization in Chongqing, Sichuan, and Guizhou provinces is likely to be the lateral extension of the studied polymetallic mineralized beds in eastern Yunnan, SW China..…”

Rare Earth Elements Geochemistry of Sheikh‐Marut Laterite Deposit, NW Mahabad, West‐Azarbaidjan Province, Iran

“…2 Geology phases played very crucial role in behavior and distribution of REEs during lateritization processes. Further work, however, implemented by Yang et al (2008) led to the exploration of a new type of REE deposits in basaltderived laterites. In Iran, there are many lateritic deposits belonging mainly to Permian period and chiefly were developed within carbonate rocks.…”

Extreme enrichment of rare earth elements in hard clay rocks and its potential as a resource

“…The upper part is mainly continental coal-bearing sandy shale (Chen et al, 2003;Mei et al, 2007), whereas the lower part consists of coal-bearing clastic rocks covered by ancient weathered crusts on the surface with different thicknesses that unconformably covered the Emeishan Basalts (Huang, 1997;Wang et al, 2006). On the geological sections, weathered basaltic and tuffaceous rocks were found, and also some typical mineralization of iron and copper was observed, which was considered as being related to strong weathering after the eruption of the Emeishan Basalts (Geological Team 108, Guizhou Bureau of Geology and Mineral Resources, 1973;Yang et al, 2008;Yang et al, 2011).…”

“…CSD-1 CSD-2 CSD-3 CSD-4 CSD-5 CSD-6 CSD-7 CSD-8 CSD-9 CSD-10 CSD-11 CSD-12 CSD-13 V 397 365 169 370 411 396 442 412 354 367 367 407 478 Zr 348 328 154 76 330 372 405 315 534 216 279 270 370 Cu 221 157 170 122 206 213 206 384 93 227 208 153 (Yang et al, 2008;Yang et al, 2011). On this section, the Emeishan Basalt Formation, which is approximately 500 m thick, was discomformably sandwiched between the Maokou Formation below and the Xuanwei Formation above (Fig.…”