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.
Facts
Comparison
Formation OriginInclude the sulfate ion (SO4 2-) within their structure. 1 Sulfate Mineral
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1. Wikipedia: Sulfate minerals
WikipediaLead sectionQuote, Lead section
The sulfate minerals are a class of minerals that include the sulfate ion (SO2-4) within their structure.
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