Rare Earth Element Geochemistry on Magmatic Rocks and Gold Deposits in Shizishan Ore-Field of Tongling, China

Design and optimization of a fused‐silica microfluidic device for separation of trivalent lanthanides by isotachophoresis

“…Based upon the LODs, a sample solution of 1 ppm of each lanthanide could be detected using C 4 D in a modified chip that included a <10X increase in sample loading volume using design considerations from the literature . This LOD is too high for testing water‐based sources , although many ores and soils contain lanthanides at concentrations >1 ppm , the leachates often become too dilute to be useful for conductivity detection experiments unless concentration steps are performed. However, significant lanthanide‐containing minerals provide higher concentration leachates; for instance, monazite leachates were reported to contain lanthanides above 100 ppm.…”

Deep Mineralization Background and Metallogenic Regularity of the Tongling Ore District

“…In terms of the spatial distribution characteristics of regional deposits, the occurrence of the deposits (spots) is controlled by the nearly east-west Tongling-Daijiahui structural magmatic belt, along which most of the coppergold polymetallic deposits, such as Tongguanshan, Shizishan, Xinqiao Shujiadian, Fenghuangshan and Shatanjiao Yaojialing, are concentrated and accompanied by iron, molybdenum, etc. The magmatic activity intensity on both sides is reduced, the lead and zinc mineralization being relatively strong, showing obvious characteristics of 'lead-zinc mixed with copper and gold' (Wu C L et al, 2003(Wu C L et al, , 2010Xu et al, 2006Xu et al, , 2008Xu et al, , 2011. In the vertical direction of the ore field and deposit, the zoning phenomenon of upper gold and lower copper is often seen.…”

Metallogenic epoch of the Jiapigou gold belt, Jilin Province, China: Constrains from rare earth element, fluid inclusion geochemistry and geochronology

“…A main feature of all the REE pattern curves is a negative slope with a slight Eu anomaly, suggesting that plagioclase fractionation only played a minor role during magma evolution, and that the partial melting processes played a dominant role in the rock formation. Because of the characteristics of the source materials (Tan et al 2006;Deng et al 2010bDeng et al , 2011 or the existence of sulphide in the ore-forming fluid and the ore body (Pack et al 2004;Xu et al 2006), the total amount of REE in the ore bearing quartz vein and granite is low. Moreover, the ΣREE values of the ore bearing quartz veins and granite samples are in the same range and have the same peak values, i.e., 19.12-147.57 and 69.78-157.32 ppm, respectively.…”