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Are you a petrologist who gets up close and personal with rocks, or someone who is exteremely curious about rocks? This quiz is about rocks and how they are formed. There are numerous types of rocks, including igneous, metamorphic, and sedimentary rocks. The most common type of rock is igneous,...see morewhich is created by the cooling of magma. Earth’s crust is mainly comprised of rocks such as granite and basalt. You should take this amazing quiz on rocks. see less
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