What is the 7th mineral on the Mohs Hardness Scale?
                                
                                
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                                    3 min read                                
                            
                                The Mohs hardness scale, a simple yet effective tool for mineral identification, uses a ranking of 1 to 10 to measure scratch resistance. At the seventh position on this scale sits quartz, a mineral so common and widespread that it is found in nearly every type of geological environment.