The coal-bearing sequences of the Late Permian in southwest China are enriched critical elements Sc, V, Co, Ni, Cu, Zn, Nb, Ta, Zr and Hf. Ascertaining conditions basis for enrichment this area is very important to support metal demands China. In study, we analyzed concentrations elemental compositions coal samples collected from Guishan coalfield eastern Yunnan, results show that C4-Upper seam...

The metasomatised continental mantle may play a key role in the generation of some ore deposits, particular mineral systems enriched platinum-group elements (PGE) and Au. cratonic lithosphere is longest-lived potential source for these elements, but processes that facilitate their pre-concentration later remobilisation to crust are not yet well-established. Here, we report new results on petrog...

Abstract The Moran komatiite-hosted Ni sulfide deposit at Kambalda (Australia) is one of the better preserved orebodies Kambalda. Its geochemical signature used to investigate evolution mineralization. orebody has several parts, including a flanking segment where massive sulfides formed relatively early and central portion in 40-m-deep erosional embayment representing later generation net-textu...

Environments where geothermal waters and glacier meltwater mix are common on Earth yet little is known about the biogeochemical processes that occur when hot, reduced water mixes with cold, oxidized glacial in natural systems. Mount St. Helens provides an ideal location to study interaction between since sources, their mixing environment Step Creek, exposed volcanic crater. We find two sources ...

Composition of terrestrial planets records planetary accretion, core–mantle and crust–mantle differentiation, surface processes. Here we compare the compositional models Earth Mars to reveal their characteristics formation are equally enriched in refractory elements (1.9 × CI), although is more volatile-depleted less oxidized than Mars. Their chemical compositions were established by nebular fr...