Chain Length, Not Bonding, Drives Xanthate Performance in Pyrite Flotation
DFT calculations and flotation experiments show that butyl xanthate beats ethyl xanthate on pyrite through reduced steric hindrance, weaker intermolecular ...
Tag: pyrite
Polysulfides revealed as drivers of pyrite formation in marine sediments
Spectroscopic analysis of sediments from Saanich Inlet provides direct evidence that polysulfides drive the transformation of metastable iron sulfides into ...
Baltic Sea Sediments Lose Their Power to Trap Sulfide as Hypoxia Persists
A 15-month Baltic Sea study found that recurring oxygen depletion progressively exhausts the sediment's capacity to retain sulfide, creating feedbacks ...
Ancient Chinese Shale Turns Into a Hidden Electrical Conductor as It Cooks
A study of the Longmaxi Formation in southern China shows that organic matter graphitization above an equivalent vitrinite reflectance of ...
Ancient Swiss Bone Bed Reveals a Drowned Coastal World from the Late Triassic
A reanalysis of the famous Niederschönthal bone bed in northern Switzerland shows it formed on a muddy Rhaetian coastal plain ...
Hidden Oxygen Fingerprints Reveal What Really Drives Toxic Sulfate in Mining Water
Isotopic analysis of water from Mongolia's Erdenet mining region shows that ferric iron, not molecular oxygen, drives the highest sulfate ...
Ancient Iron Records Reveal Mountains and Plants, Not Just Oxygen
A new analysis of 1.2 billion years of sedimentary iron shows the geological record reflects not only Earth's oxygenation but ...
Pyrite Acts as Hidden Battery Driving Antimony Release from Mine Minerals
A 42-day factorial experiment shows that pyrite galvanically couples with stibnite to drive antimony ore biodissolution, with microbes sustaining iron ...
Sulfide Slowly Unlocks the Iron Cage That Traps Phosphorus in Lake Sediments
A 96-day mesocosm study shows that sulfide produced by microbial sulfate reduction progressively dissolves vivianite in lake sediment, converting iron-bound ...
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Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study
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University of Seville Breaks 120-Year-Old Mystery, Revises a Key Einstein Concept
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Bee body mass, pathogens and local climate influence heat tolerance
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Researchers record first-ever images and data of a shark experiencing a boat strike
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Groundbreaking Clinical Trial Reveals Lubiprostone Enhances Kidney Function
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