2007-01-24 11:34:50 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Gneiss is not a mineral, it is a metamorphic rock. They are usually coursely foliated and carry a variety of minerals, depending on the source.
2007-01-24 12:03:41 · answer #1 · answered by ? 6 · 1⤊ 0⤋
Gneiss is a rock!!!! NOT MINERAL .....
It is a Foliated , banded or striped metamorphic rock composed of with alternating layers of dark and light minerals like light (feldspar, quartz) and dark (biotite, hornblende) . Product of high pressure and temperature.
2007-01-24 17:15:32 · answer #2 · answered by rajeev_iit2 3 · 0⤊ 0⤋
gneiss is the metamorphic rock that is derived from the igneous rock granite. It is sort of a salmon color with stripes.
2007-01-24 13:00:21 · answer #3 · answered by Anonymous · 0⤊ 0⤋
http://encyclopedia.thefreedictionary.com/gneiss
2007-01-24 11:45:43 · answer #4 · answered by Magic Guy 3 · 0⤊ 0⤋
It looks like it's sort of layers of tan and charcoal...see article link.
2007-01-24 11:42:09 · answer #5 · answered by callthedog 2 · 0⤊ 0⤋
multicolored with dark and light colors
2007-01-24 11:40:58 · answer #6 · answered by Froggiesmiles 3 · 1⤊ 0⤋