basalt		remains of once living ocean organisms
crystals		what forms when lava above the surface cools?
coal		a volcanic rock; very light colored, frothy, lava that is full of gas
foliated		another word for magma
sediments		extrusive or intrusive; such as pumice, obsidian
magma		a detrital sedimentary rock made mainly of clay
molten		an organic sedimentary rock
igneous rock		a short word for an igneous rock
ignis		when sediments go through compaction and cemenation
chalk		its a type of igneous rock; dark colored, fine-grained extrusive rock
intrusive		extrusive or intrusive: such as granite, basalt
limestone		it contains calcium carbonate
nonfoliated		when mineral grains grow, re-arrange but dont form layers
metamorphic rock		very shiny natural volcanic glass
extrusive		when an igneaous rock goes through weather and erosion
compaction		when a metamorphic rock melts
pumice		when a sedimentary rock goes through heat and pressure
obsidian		when magma cools
sedimentary rock		when the rock layers form parallel to each other
shale		wat process is going on when they say layers of small sediments are being compressed