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New Pacific Metals : Carangas Project Technical Report Department of Oruro, Bolivia - Form 6-K

coupled with relatively recent changes in government policies and regulations, justifies continuation of work by the Joint Venture to evaluate the working model of vertically-zoned precious and base. | November 22, 2022

McEwen, Rio Tinto to develop copper project in Nevada

The Canadian gold and silver producer is offering Rio's subsidiary, Kennecott Exploration, a 60% stake in Elder Creek copper project.

EMX Royalty Announces Q1 Royalty Distribution from the Caserones Copper-Molybdenum Mine in Chile

EMX Royalty Corp : EMX Royalty Announces Q1 Royalty Distribution from the Caserones Copper-Molybdenum Mine in Chile

Frontiers | The Recent Relationships Between Andean Ice-Core Dust Record and Madeira River Suspended Sediments on the Wet Season

Dust particle studies in ice cores from the tropical Andes provide important information about climate dynamics. We investigated dust concentrations from a 22.7 m ice-core recovered from the Quelccaya Ice Cap (QIC) in 2018, representing 14 years of snow accumulation. The dust seasonality signal was still preserved with homogenization of the record due to surface melting and percolation. Using a microparticle counter, we measured the dust concentration from 2–60 μm and divided the annual dust concentration into three distinct groups: fine particle percentage (FPP, 2−10 μm), coarse particle percentage (CPP, 10−20 μm), and giant particle percentage (GPP, 20−60 μm). Increased dust was associated with the warm stage of the Pacific Decadal Oscillation index (PDO) after 2013 with significant increases in FPP and a relative decrease in CPP and GPP. There was a positive correlation between PDO and FPP (r = 0.70, p-value < 0.005). CPP and GPP were dominant during the mainly PDO co

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