Types of Rocks Trick | Quick Trick | Building Material | Remember Forever | SSC JE RRB JE 

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Rocks are Classified into three Categories according to the processes that resulted in their formation.
(1) igneous rocks, which have solidified from molten material called magma.
(2) sedimentary rocks, those consisting of fragments derived from preexisting rocks or of materials precipitated from solutions.
(3) metamorphic rocks, which have been derived from either igneous or sedimentary rocks under conditions that caused changes in mineralogical composition, texture , and internal structure.
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