Common Rocks

Can you name the rock based on the description?

DescriptionRockRock Type
Commonly formed from feldspar, quartz, and mica (intrusive).Igneous
Commonly formed from plagioclase feldspar and pyroxene (extrusive).Igneous
A mix of felsic and mafic materials (intrusive).Igneous
Largely calcite. Contributes to a Karst topography.Sedimentary
Fine grained silica that contains microcrystalline quartz. Sedimentary
Glassy and felsic (extrusive).Igneous
Non-foliated consisting mostly of calcite.Metamorphic
Clastic rock with particles ranging from .0625 to 2 mm in size.Sedimentary
Clastic rock made from clay particles.Sedimentary
Foliated rock made from clay particles.Metamorphic
DescriptionRockRock Type
Non foliated rock where quartz grains recrystallize.Metamorphic
Byproduct of accumulated plant remains.Sedimentary
Extrusive rock with large vesicles.Igneous
Foliated rock whose base materials include feldspar, quartz, and mica.Metamorphic
Extrusive rock with many small vesicles.Igneous
Deposited after evaporation. Sodium chloride.Sedimentary
Clastic rock consisting of pebbles cemented together.Sedimentary
Commonly formed from plagioclase feldspar and pyroxene (intrusive).Igneous
A soft evaporite. Calcium Sulfate.Sedimentary
Commonly fromed from feldspar, quartz, and mica (extrusive).Igneous
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Last Updated: Feb 16, 2017

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