quartz crystalline mineral rock stone isolated white background silicon dioxide |
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| navigate by keyword : mineral naturally occurring substance distinctive chemical physical properties composition atomic structure rocks generally minerals mixed geological processes satin spar gypsum isolated white background green fluorite rock stone museum quartz crystalline silicon dioxide hardness mohs scale raw hematite magnetite magnetic iron sample specimen metamorphic ore page prev1 kaolinite clay important industrial ball kaolinitic sedimentary clays |
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| A mineral is a naturally occurring substance with distinctive chemical and physical properties, composition and atomic structure. Rocks are generally made up of two of more minerals, mixed up through geological processes. |
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