SOGGY CRUST Just as arsenic in aquifers and sulfide
minerals in mines can nurture pollution-enhancing bacteria, lava-derived minerals in the seafloor may be nourishing mineral-metabolizing microbes.
The free energy for the reduction of silica by magnesium sulfide
in ductile base iron of the same properties is -16,342 calories.
Leakage takes place, and the key is to be able to detect that leakage and any sulfide
oxidation that results, and to deal with it before it contaminates the environment.
Such statements include comments regarding the timing of the completion, commissioning, and commencement of operations of the Bogoso Sulfide
Expansion Project and various components of the Project.
Although the researchers aren't sure about the function of the snail's sulfide
armor, it may provide protection from predatory snails.
In other words, there was a total of 25 cu ft of metal oxides and metal sulfides
in this vessel.
The first complete synthesis of what might be called the iron sulfide
theory for the origin of life appeared in the January Philosophical Transactions of the Royal Society of London B.
Analysis of the newly integrated database revealed higher nickel values than previously reported, newly recognized Ni-Cu-PGE anomalies between the Lower Canwell and East Canwell showings, and increased potential for large deposits of disseminated sulfide
They also measured isotope ratios in sulfides
produced by Archaeoglobus fulgidus, a single-celled organism that thrives around deep-sea hydrothermal vents.
These thick intersections of weakly disseminated Fe-Ni sulfides
at the Canwell Intrusive Complex are considered to be significant for two reasons.
scientists have arguedagainst this theory by noting that lake temperatures were not elevated, its bottom did not appear to have been disturbed, there were no volcanic sulfides
in the lake and no suspended sediments that might have resulted had steam rushed through bottom sediments.
Gold mineralization at the Project occurs in strongly silicified, fine grained sulfides