Correct Answer : Option (A) - ocean floors
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.
Published On : June 27, 2020
Category : World Geography