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en.wikipedia.org/wiki/List_of_rock_types

The following is a list of rock types recognized by petrologists. There is no agreed number of ... Dunite - a phaneritic ultramafic rock composed of more than 90% olivine · Essexite - a silica-undersaturated .... grained metamorphic rock with light and dark alternating bands: Granulite - a high grade metamorphic rock formed ...

en.wikipedia.org/wiki/Gneiss

Gneiss is a common distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. It is often foliated (composed of layers of sheet-like planar structures). ... The lighter bands contain relatively more felsic (silicate minerals, containing ...

wps.prenhall.com/esm_tarbuck_earth_8/19/5074/1298948.cw/index.html

A. loosely coherent rock composed of broken fragments that formed along a fault zone ... E. composed of alternating bands of light and dark silicate minerals.

www.answers.com/Q/What_is_composed_of_alternating_bands_of_light_and_dark_silicate_minerals

Alternating bands are known to Geologists as Gneissose Banding, and is used to instantly ... What rock has parallel bands of dark and light mineral grains?

www.studyblue.com/notes/note/n/ch-3-test/deck/10484741

Mar 24, 2014 ... Which is the coarse-grained rock which is composed mainly of ... _____ is composed of alternating bands of light and dark silicate minerals.

cueflash.com/Decks/esci_61-80

When certain mineral crystals recrystallize w/orientation..the rock is said to exhibit ... below is composed of alternating bands of light and dark silicate minerals.

www.chegg.com/homework-help/essentials-of-geology-12th-edition-chapter-8-solutions-9780321957870

b. loosely coherent and composed of broken fragments that formed along a fault zone ... f. composed of alternating bands of light and dark silicate minerals ...

www.chebeague.org/cischool/rocksminerals

The rocks and minerals described in this booklet can be found in Maine. ... Basalt is a dark, fine grained volcanic rock that is formed when magma is ... This banded metamorphic rock is composed of alternating bands of light ... A black iron aluminum silicate mica mineral found in granites, schists, phyllites & gneisses.

imnh.isu.edu/digitalatlas/geo/rocks/rocks.htm

Very light-colored rocks are generally lacking in iron-bearing minerals. ... Then lowgrade metamorphism will convert the iron silicates to the green mineral chlorite. ... Shale is a fine-grained sedimentary rock composed of clay- and silt sized ..... A gneiss is a rock consisting of alternating bands of light and dark minerals.

www.coursehero.com/file/ppmue4/The-distinctive-banded-or-layered-appearance-of-gneisses-is-generally

Jul 17, 2008 ... The preferred orientation of mineral grains in foliated metamorphic rocks ... (f) Composed of alternating bands of light and dark silicate minerals ...