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Do you Know Rocks?

Bobby Herzberger

Try and solve the crossword puzzle to win the secret prize!...There is not a prize actually

Coal classified principally according to the minerals they consist of and on their chemical composition
Quartzite nonfoliated metamorphic rock resulting from the metamorphism of limestone
Gneis currently known only on Earth where it forms a major part of continental crust.
Hornfel It is usually gray to black and fine-grained due to rapid cooling of lava
Slate fine-grained, foliated, homogeneous, metamorphic rock
Conglomerate fine-grained metamorphic rock
Sandstone rock composed of angular fragments of several minerals
Schist a rock consisting of individual stones that have become cemented together
Diorite Fine-grained aquifer
Halite metamorphic rock with a high hardness
Basalt the largest source of fuel for the generation of electricity world-wide
Rhyolite The vast majority of the Earth's surface
Gabbro textural term for a volcanic rock
Marble can be considered as the extrusive equivalent to the plutonic granite rock
Breccia esults from partial melting of a mafic rock above a subduction zone
Granite name of a sedimentary carbonate rock
Pumice a naturally occurring glass formed as an extrusive igneous rock
Obsidian very resistant to chemical weathering and often forms ridges and resistant hilltops
Dolomite commonly known as rock salt.

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