Quote:
Originally Posted by Luffy
I myself can't believe that factoid is right.
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I don't think it is. Naturally occurring Perovskite is made of calcium, titanium, and oxygen.
I believe that the most common mineral on the surface of the Earth's crust is silica (silicon dioxide). But the Earth's core seems to be mostly iron and if you take the Earth as a whole, that probably accounts for most of it.