Most of the mass is accounted for by iron and oxygen (c. 32% each), magnesium and silicon (c. 15% each), calcium, aluminium and nickel (c. 1.5% each).

“By the sweat of your face
You will eat bread
Until you return to the ground,
For from it you were taken;
For you are dust,
And to dust you shall return.” - Genesis 3:19