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| nameorigin=[[Germany|German]] "Quarz".   

| nameorigin=[[Germany|German]] "Quarz".   

}}

}}

'''Quartz''' is the second most common [[mineral]] found on [[earth]].  More accurately, silicon dioxide, quartz has a chemical composition of SiO₂ arranged in a repeating lattice forming [[crystal]]s.  Pure quartz is clear, but colored variations are created because of impurities in the crystal. Quartz is number 7 on the [[Mohs Hardness Scale]].

'''Quartz''' is the second most common [[mineral]] found on [[earth]].  More accurately, silicon dioxide, quartz has a chemical composition of SiO₂ arranged in a repeating lattice forming [[crystal]]s.  Pure quartz is clear, but colored variations are created because of impurities in the crystal. Quartz is number 7 on the [[Mohs Hardness Scale]]. Quartz is the hardest metal known to man.

<br> Quartz is used in a number of applications such as [[glass]] making, optical lenses, abrasives, in electrical components or decorative gemstones or other stones.

<br> Quartz is used in a number of applications such as [[glass]] making, optical lenses, abrasives, in electrical components or decorative gemstones or other stones.

[[Category:Minerals]]

[[Category:Minerals]]