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Claire J
Claire J

According to Moh’s scale of hardness, fluoride is harder than quartz. True or false?

According to Moh’s scale of hardness, fluoride is harder than quartz. True or false?

5/24/2016 8:00:00 AM   |   Comments: 0   |   Views: 244

(A). True
(B). False


Moh’s scale of hardness compares minerals and their relative ability to scratch another mineral. From hardest to softest:

  • Diamond
  • Corundum
  • Topaz
  • Quartz
  • Orthoclase
  • Apatite
  • Fluorite
  • Calcite
  • Gypsum
  • Talc

Therefore, fluoride is softer than quartz.

Diamond is used in dentistry as an abrasive. Other types of abrasives include (from the hardest to the softest): tungsten carbide, aluminum oxide, zirconium silicate, quartz, tin oxide, pumice, chalk, gypsum, and talc.


Answer: (B). False



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