My choices are:
1)copper
2)salt
3)mica
4)diamond
2007-01-09 14:45:03 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Mica, of course. It is closely related (structurally) to clays, and is a member of the type of silicate minerals called phyllosilicates (the phyllo- refers to sheet or leaflike habit). The property of mica to form thin sheets is called cleavage. Mica was once used to create windows in furnaces and the little window in electrical fuses, because mica has very low conductivity to electricity and doesn't melt easly at all. One of the main uses of mica is in oil and gas exploration where it is used during drilling to prevent the drilling fluid (usually a water and bentonite mixture) from seeping into the rocks. There are several mica minerals, the most common of which are biotite, muscovite, and phlogopite. They contain water molecules in the crystal structure and it is along the crystal direction inhabited by the water that the sheets are formed.
2007-01-09 15:21:16 · answer #1 · answered by David A 5 · 4⤊ 0⤋
Number 3 mica
2007-01-09 15:25:03 · answer #2 · answered by lonetraveler 5 · 2⤊ 0⤋
Mica. BTW, I used to go out with a thin flake.
2007-01-09 14:54:56 · answer #3 · answered by Jim R 2 · 1⤊ 0⤋
3, mica
2007-01-09 14:56:00 · answer #4 · answered by Ehh Blinkin 3 · 2⤊ 0⤋
Mica, it's beautiful too!
2007-01-09 15:09:45 · answer #5 · answered by Stormy 3 · 2⤊ 0⤋
mica
2007-01-09 15:17:22 · answer #6 · answered by Scott S 4 · 2⤊ 0⤋
Corn.
2007-01-09 14:54:35 · answer #7 · answered by Thegustaffa 6 · 0⤊ 3⤋