The heavier silicates named ‘Sima’ or silica + magnesium are most abundant in which layer?
The heavier silicates named 'Sima' or silica + magnesium are most aboundant in the ocean floor. These are a mix of minerals like gold, silver, copper, lead, zinc, and rare earth metals like molybdenum, tellurium, and titanium that form along the ocean floor—near underwater volcanic vents. Finally, there are cobalt-rich ferromanganese (Fe-Mn) crusts that form a layer of the ocean floor.
