Calcite, Plagioclase, Hornblende, Galena, Quartz, Halite, Fluorite, Orthoclase, Biotite, Sphalerite
2007-09-07 12:11:15 · 3 answers · asked by Macgyver with Crosby 4 in Science & Mathematics ➔ Earth Sciences & Geology
Sounds right to me. The following sources might be interesting reading:
http://en.wikipedia.org/wiki/Cleavage_%28crystal%29
http://mineral.galleries.com/minerals/property/cleavage.htm
2007-09-13 08:28:04 · answer #1 · answered by R P 3 · 0⤊ 0⤋
Calcite - perfect rhombohedral cleavage (3 cleavage directions, not at 90m degrees)
Plagioclase - two good cleavages at about 90 degrees
Hornblende - two good cleavages at about 60 degrees
Galena - perfect cubic cleavage (3 clevages mutially at right angles)
Quartz - no cleavage
Halite - as for galena
Fluorite - Perfect octahedral cleavage (4 cleavages not at right angles)
Orthoclase - as for plagioclase
Biotite - 1 perfect cleavage (+2 very poor clevages which are not usually visible)
2007-09-07 12:54:30 · answer #2 · answered by Andrew 5 · 2⤊ 0⤋
They dont have cleavage bc they're not women DUH
2007-09-07 12:16:37 · answer #3 · answered by Anonymous · 0⤊ 3⤋