Classification sorts earth materials by their formal mineral family. Wikipedia notes that quartz "is classified structurally as a framework silicate mineral and compositionally as an oxide mineral," two different systems applied to the same substance. This dimension lets a visitor compare materials that mineralogists group together for the same technical reason.
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Formation OriginFormed through the cooling and solidification of magma or lava. 1 Igneous Rock
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1. Wikipedia: Igneous rock
WikipediaIgneous rock, lead sectionQuote, Igneous rock, lead section
Igneous rocks are formed through the cooling and solidification of magma or lava.
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