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togermano

macrumors regular
Original poster
Aug 10, 2007
174
0
I saw at the store one of them had a chip in it. It looks like its plastic made to look like metal when its really not :mad:
 

rallycars

macrumors member
Jan 13, 2007
61
0
Was I the only one here who took Geology in college? Aluminum is a mineral. Wikipedia calls it a poor metal, but I thought it was neither metal nor alloy. It certainly isn't magnetic. I might agree that it is metallic, however. No scientist, just a pseudo-informed opinion.
 

Much Ado

macrumors 68000
Sep 7, 2006
1,532
1
UK
Was I the only one here who took Geology in college? Aluminum is a mineral. Wikipedia calls it a poor metal, but I thought it was neither metal nor alloy. It certainly isn't magnetic. I might agree that it is metallic, however. No scientist, just a pseudo-informed opinion.

IIRC, only Nickel, iron, cobalt and their alloys are ever magnetic.

Poor-metals are metals enough for this, though, surely?
 

daneoni

macrumors G4
Mar 24, 2006
11,841
1,577
Its definitely metal but probably the lightest metal of all hence its use with aircrafts and london buses as its very malleable. I think the only plastic part of the iMac is the black back cover, everything else is aluminium or glass
 

RichardI

macrumors 6502a
Feb 21, 2007
568
5
Southern Ontario, Canada
It's not pure aluminum, and it's definitely a metal. Pure aluminum would be a very bad idea much like pure copper or pure iron would be very bad. I'm sure it's an alloy of some sort. And aluminum is not the lightest metal available for sure. It's likely titanium or some other modern alloy. Aluminum will chip under the right circumstances, it will even burn.

Rich :cool:
 

v-ault

macrumors regular
Dec 20, 2006
167
0
Was I the only one here who took Geology in college? Aluminum is a mineral. Wikipedia calls it a poor metal, but I thought it was neither metal nor alloy. It certainly isn't magnetic. I might agree that it is metallic, however. No scientist, just a pseudo-informed opinion.

Aluminum is not a mineral according to my current geology teacher :O
 

simoncoul

macrumors member
Jan 13, 2007
51
0
The aluminum is probably anodized so there will be a thin coating on the surface that allows the aluminum to be the colour that is and makes the surface more scratch resistant. But if you scratch thru the surface then u will see the bare metal.

And aluminum is not a mineral it's a metal.
 
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