Why may the surface of a minaral be a different color then the interior of the mineral?

0 ⤊

I found a couple rocks like this and i'm curious...

2007-04-24 09:26:21 · 2 answers · asked by smegamario 1 in Environment

Weathering is my first guess -surface oxidation changes the chemical composition on the surface.

2007-04-24 09:34:02 · answer #1 · answered by dollhaus 7 · 0⤊ 0⤋

I'm not sure of spelling but oxidation. Like rust.

2007-04-24 16:33:54 · answer #2 · answered by bess 4 · 0⤊ 0⤋