This study aims to comprehensively assess the environmental risks of microplastics in Yellow River, achieving following results through comprehensive research. The average microplastic abundance river water and sediments are 5358–654000 n/m3 43.57–615 items/kg, respectively, there fewer samples than sediments. Microplastics area can be divided into five types according their occurrence morphologies, namely fragments, foams, films, fibers, particles. most widely distributed pollution include...

The Jinchuan intrusion is the largest single magmatic nickel sulphide deposit in world. Sulphide mineralization mainly occurs two segments (I and II). crystal size distributions (CSDs) of olivines are distinctly different. For all segments, their grain sizes values clustering index R increase with increasing olivine abundance cumulates, illustrating overgrowth trends for Segment II a combination compaction I olivines. Kinked CSDs cumulates suggest presence populations different nucleation...

Abstract The implementation of the carbon peaking and neutrality strategy has led to a steady increase in supply lithium resources. Brine is one important sources lithium, extraction Li from carbonate-type brine particularly straightforward. Research into source materials hydrological processes crucial for sustainable development brine. As fluid-mobile metallogenic element, significant mass difference between its stable isotopes ( 7 6 Li), leading isotopic fractionation. In this study, we...

The Jinchuan Ni-Cu-PGE deposit is the single largest magmatic Ni-sulfide in world, with three different hypotheses on its ore-forming processes (e.g., in-situ sulfide segregation of sulfide-bearing magma, deep multiple injections and hydrothermal superimposition) mainly based study whole-rock geochemistry isotopes S-Sr-Nd-Hf). In this study, we concentrated magnetite textural geochemical characteristics from ores to clarify genetic types difference magnetite, explore a new credible process...

The Mangling intrusive complex has different dioritic to granitic phases and is spatially temporally related molybdenum deposits in the Qinling Orogen. Zircon U-Pb dating of indicates that rocks (biotite diorite biotite enclave; ca. 150−147 Ma) formed earlier than (medium- fine-grained monzogranite K-feldspar granite; 145−141 Ma). exhibit large ion lithosphere element (e.g., Rb) light rare earth enrichment high field strength Nb, Ta, Ti) depletion. They have low moderate SiO2 (51.33−58.16...

With the development of green energy, demand for lithium resources has increased sharply, and salt lakes are an important source lithium. In China, Qinghai–Tibet Plateau substantial resources, Bangor Co Salt Lake is a typical Li-rich carbonate lake in northern Tibet. Research into great significance future sustainable industrial development. This article selects recharge water system (river cold spring water) brine samples as research objects, conducts hydrochemical composition isotope...

The Northern Qinling Belt (NQB) develops some medium-sized molybdenum deposits, but their mineralization ages are unclear, which hinders to establish the metallogenesis and later mineral prospecting. newly discovered Sigou Mo–W deposit in NQB has garnet alteration, of skarn alteration unknown. Disseminated veined (Grt I II) were identified at Sigou, with former having three sub-types (I-A, I-B, I-C) based on texture, they all show dark light zones or oscillatory zoning under backscattered...

The recently discovered Shalong iron deposit in the Central Tianshan with a reserve of 14 Mt at 25–30 wt.% Fe shows typical formation geological characteristics: host rocks are mainly metamorphosed volcanic including quartz hornblende schist, mica and plagioclase amphibolite; orebodies stratiform bedded, indicative strata‐controlled deposits; metallic minerals dominated by magnetite haematite ilmenite minor quantities, whereas gangue quartz, amphibole, chloritoid, plagioclase; ore textures...

This paper aims to investigate the present situation and transfer mechanisms of microplastics in lacustrine sediments Qinghai-Tibet Plateau. The study surveyed average abundance sediments. lakes from Plateau is 17.22–2643.65 items/kg DW 0–60.63 based on data Qinghai Lake Siying Co Basin. microplastic small medium very high compared that other areas world. Like world, those mainly include organic polymers PA, PET, PE, PP are primarily shape fibers fragments. pollution affected by natural...

Abstract Uplift and exhumation are important factors affecting the preservation of deposits. The anatomy uplift‐cooling evolution in East Longshou Mountain is significant research value understanding changes Jinchuan Ni‐Cu‐PGE deposit since its formation. This study uses apatite fission track (AFT) thermochronology to reconstruct thermal history Mountain, including mine, revealing uplift elucidating status deposit. AFT ages distributed from 62.3 ± 3.0 Ma 214.7 14 Ma, with differences...

Gold-sulfide mineralization in the Abu Zawal (Fatira) mine area, North Eastern Desert of Egypt, is related to porphyritic felsite dikes and elongate silicification zones granitic rocks. These host rocks exhibit major trace element geochemical features typical calc-alkaline metaluminous I-type granites, likely originated a late-orogenic setting. Their characteristics along with their fractionated LREE relative HREE patterns imply either formation subduction-related environment or generation...

The Jinchuan Ni‐Cu‐PGE deposit is one of the three largest magmatic Ni deposits in world. Disseminated, net‐textured, Cu‐rich sulphide ores and massive are most important ore types. genesis different types mineralization processes remain controversial. Three hypotheses have been proposed by previous studies, including situ segregation sulphide‐bearing magma, deep segregation‐multiple injections, hydrothermal superimposition. To understand types, we studied occurrence, intergrowth textures,...

The ~287 Ma Yejili mafic–ultramafic intrusion in the southern Alxa Block mainly consists of lherzolite, wehrlite, and gabbro. Rocks from lherzolite wehrlite have olivine with Fo values ranging 87.4 to 88.6 mol.% 81.6 mol.%, respectively, indicating crystallization a moderately evolved magma, that is mixing 5% 7% upper crust contaminant primitive magma modelling by Sr–Nd isotopic compositions. Samples generally low variable PGE (0.2 4.7 ppb) display trough‐like mantle‐normalized chalcophile...