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Igneous Rock Science Kit
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This kit contains 15 igneous rock specimens. Included are guide and magnifying glass. Instruction sheet included. (Click for instructions GE-RCK-K here.)
By the way, "Minerals are homogeneous, naturally occurring, inorganic solids. Each mineral has a definite chemical composition and a characteristic crystalline structure. A mineral may be a single element such as copper (Cu) or gold (Au), or it may be a compound made up of a number of elements. About 2,500 different minerals have been described. Rocks are made up of one or more minerals." (from Scilinks of NSTA)
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