Common Rocks Crossword Puzzle

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