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Acid Rock (view source)

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~~'''Acid rocks''' are [[igneous rock]]s with over 65% total [[silica]] and over 20% [[quartz]].~~

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~~==Sources==~~

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*Pellant, Chris. ''The Complete Book of Rocks and Minerals'', p.250, Dorling Kindersley Inc.: New York (1995)

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~~[[category:Igneous Rocks]]~~

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