2006-08-10 10:18:03 · 6 answers · asked by Zachary C 1 in Science & Mathematics ➔ Earth Sciences & Geology
An excellant article on this can be found at the source link:
2006-08-10 10:41:22 · answer #1 · answered by Randy 7 · 0⤊ 0⤋
They occur at the base of the intrusives because Ni-Cu deposits are found in layered intrusions, stocks and ultramafic sills and flows. These deposits are important sources of chromium, titanium, and vanadium.
2006-08-10 17:26:54 · answer #2 · answered by TrippingJudy 4 · 0⤊ 0⤋
^
Basically right.
Platinum and chromium minerals are heavy, and sink to the bottom of magma bodies. Furthermore, there are some minerals that don't "fit" / dissolve as well into the surrounding minerals, causing them to seperate out from the melt to a greater degree.
2006-08-12 11:09:42 · answer #3 · answered by heraclius@sbcglobal.net 3 · 0⤊ 0⤋
Heavier metals sink.
2006-08-10 17:43:31 · answer #4 · answered by AdamKadmon 7 · 0⤊ 0⤋
Because it wanted 20" rims and Grills buddy.
2006-08-10 17:23:32 · answer #5 · answered by Anonymous · 0⤊ 1⤋
I don't know and it's flippin' aggravating, isn't it?
2006-08-10 17:23:26 · answer #6 · answered by Anonymous · 0⤊ 1⤋