Researchers validated some steps in the standard sequential chemical technique used to extract different forms of iron from rock samples but found inconsistencies in other steps.
iron
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Thermal Convection Can Power the Geodynamo
New high-pressure experiments on fluid iron suggest thermal convection without compositional buoyancy is sufficient to drive the dynamo generating Earth’s magnetic field.
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Ultrahot Exoplanet Bleeds Heavy Metals into Space
The planet is also shaped like a football (the American kind).
Posted inResearch Spotlights
Antarctica’s Seasonal Streams Contribute Iron to the Ross Sea
Analysis of nutrient concentrations in four streams that discharge to the Southern Ocean indicates they are important sources of iron and phosphorous for coastal phytoplankton communities.
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Iron Readings Hint That Ocean Depth Influences Seabed Volcanism
Water pressure on mid-ocean ridges may affect magma production kilometers beneath the ocean floor.
Posted inResearch Spotlights
Tiny Creatures Form Massive, Bright Ring Around Antarctica
Dense algae populations in the Great Calcite Belt could cause carbon dioxide release from the ocean into the atmosphere.
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Iron Fertilization Might Not Make Oceans Better Carbon Sinks
New research suggests more iron during the last ice age did not mean more algae production in the equatorial Pacific, pointing to possible futility of a controversial geoengineering idea.
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Cave-Dwelling "Slime Curtains" Cycle Nitrogen and Iron
In a cave accessible only by daredevil divers, extraordinary microbial colonies metabolize nitrogen and iron nutrients and possibly remove pollutants from water.
Posted inResearch Spotlights
The Enigmatic Core Properties of the Inner Earth
A new study explores the possibility of cubic iron alloy structure at our planet's core.
Posted inResearch Spotlights
Microbial Communities Form Iron Shells in Abandoned Mines
Fungi and bacteria deposit metal ions on steel objects left behind by miners. These metals form strange clam-like shells on the steel surfaces.