25th November 2019

wikipedia
20

How does the hardness scale work?

Minerals. The Mohs scale of mineral hardness is based on the ability of one natural sample of mineral to scratch another mineral visibly. The samples of matter used by Mohs are all different minerals. Rocks are made up of one or more minerals.

Also know, what is glass on the Mohs scale?

Measuring hardness on the Mohs scale
HardnessSubstance or Mineral
5Apatite
6Orthoclase
6.5Iron pyrite
6 to 7Glass, Vitreous pure silica

What mineral can scratch glass?

Hardness
Hardness ScaleIndex MineralCommon Objects
2GypsumFingernail
3Calcite
4FluoriteCopper Penny
5ApatiteGlass

Can glass scratch a penny?

Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. Also if a penny can scratch a mineral it rates a 3, a fingernail is 2.5, knife blade 5.5, glass 5.5 and steel file 6.5.
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