Feldspar - This rock makes up 41% of the Earth's crust by weight - Wikipedia

submitted by magnora7 from en.wikipedia.org

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[–][deleted] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (1 child)

A small ad-on, Feldspar is actually a specific mineral (the red/pink one in granite), with rocks basically being clumps of minerals. If you break it down a little further, I thought it was really cool when I learned that the crust is about 46% oxygen (bonded to other elements)!

[–]magnora7[S] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

That is cool! That reminds me of how plants and trees get 95% of their mass from the air, not the soil, which really surprised me when I learned it.