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Tenacity, Density, Color, Streak, Luster, Magnetism, and Hardness
Minerals are tested for hardness by performing a scratch test. The unknown mineral is scratched with another object that the hardness is known. For example, a unknown mineral may be scratched with a piece of metal to compare the resistance.
The stronger the bond the harder the mineral.
Google "Mohs hardness scale". This is a relative hardness scale which compares one mineral's hardness to another. (It is between 3.5 and 5.5 on the Mohs hardness scale)
Hardness is better.
Tenacity, Density, Color, Streak, Luster, Magnetism, and Hardness
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Between 3.5 and 5.5 on the Mohs scale of mineral hardness.
Minerals are tested for hardness by performing a scratch test. The unknown mineral is scratched with another object that the hardness is known. For example, a unknown mineral may be scratched with a piece of metal to compare the resistance.
The mineral with hardness 3 will get scratched.
Somewhere between 3 and 5 on the Mohs scale of relative mineral hardness...
The stronger the bond the harder the mineral.
Google "Mohs hardness scale". This is a relative hardness scale which compares one mineral's hardness to another. (It is between 3.5 and 5.5 on the Mohs hardness scale)
The 5 hardness mineral would like suffer scratches or abrasion.
No, there is no correlation between color and hardness in minerals.
the mineral that has a hardness of 7 is "Quarts
The mineral with the greatest hardness is the diamond.