Rock Crossword Puzzle by Makenna White

Rich in magnesium and water
Formed at the surface of the earth in water or land
Derived from mud and may contain fossils
Transformed igneous or sedimentary rocks due to intense pressure or heat
Sedimentary rock formed after high pressure exposure deep beneath earth's surface and is layered
Made from shells, coral and calcite
Made from sand and can be picked apart
Sandstone can change into this
Limestone can change into this
Many rocks can be changed into a layered rock
Light colored with large interlocking crystals
Dark colored very small crystals
Large group of dark igneous rock
Naturally occurring volcanic glass
Metamorphic rock with golden to red-brown color
Igneous rock composed of silicate minerals
A hard form of the mineral quartz
Group distinguished by the presence of alumina and silica
Most common form of natural calcium carbonate
Black or brownish-black sedimentary rock
Dark colored igneous rock with round bubble like cavities
Composed of calcium magnesium carbonite
Composed of unconsolidated rock fragments