7.0
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
It's called the Ore
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
It's called the Ore
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.
The Mohs scale is used to determine the relative hardness of minerals.
The hardness is 3-4 on Mohs scale.
Nickel has a hardness of 4 on the Mohs scale.
It is about 2.5 in the Mohs Hardness Scale.
it is 6 1/2 in the mohs hardness scale
Coal, as an organic sedimentary rock, is not determined to have a hardness on the Mohs scale of mineral hardness.