Common Rocks Crossword Puzzle

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QUESTIONS LIST:

granite : igneous, intrusive rock with large crystals, used in counter tops
obsidian : igneous, extrusive, volcanic glass
gneiss : metamorphic, foliated, made from granite
meta conglomerate : metamorphic, foliated, formed from conglomerate
shale : sedimentary, fine grained rock that forms from silt, can contain petroleum
quartzite : metamorphic, non-foliated, formed from quartz
basalt : igneous, extrusive, dark rock without crystals
limestone : sedimentary rock composed of fossilized shells of sea creatures
sandstone : sedimentary rock, often banded, formed from the lithification of sand
conglomerate : sedimentary, clastic rock, made from small rocks lithified together
marble : metamorphic, non-foliated, formed from limestone
slate : metamorphic, formed from shale, used for roofing and flooring
pumice : igneous, extrusive, formed from rapid cooling, floats, used for removing dead skin from feet and body