What is MOHS’ HARDNESS SCALE?

the German geologist Friedrich Mohs (1773-1839) invented this scale in 1812. Ten minerals arranged and numbered from the softest to the hardest. The mineral with a higher number can scratch a lower-numbered mineral, but not the other way around. The series is: 1-talc, 2-gypsum, 3-calcit, 4-fluorite, 5-apatite, 6-orthoclase, 7-quartz, 8-topaz, 9-corundum, 10-diamond.

More On This Topic



Link to This Definition
Did you find this definition of MOHS’ HARDNESS SCALE helpful? You can share it by copying the code below and adding it to your blog or web page.
Written and fact checked by The Law Dictionary