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rocks
17 cards·by 20astucker
breccia
sedimentary clastic
answer
hornfels
metamorphic contact
schist
metamorphic regional
slate
metamorphic regional
sandstone
sedimentary clastic
conglomerate
sedimentary clastic
pumice
igneous extrusive
basalt
igneous extrusive
scoria
igneous extrusive
coal
sedimentary organic
shale
sedimentary clastic
limestone
sedimentary organic
granite
igneous intrusive
obsidian
igneous extrusive
quartzite
metamorphic regional
gneiss
metamorphic regoinal