Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
The mineral hardness scale is called the Mohs scale of mineral hardness, named after German geologist Friedrich Mohs who created it in 1812.
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
Flint has a hardness of 7 on the Mohs scale of hardness.
Dolomite has a hardness of 3.5 to 4 on the Mohs hardness scale.
The Mohs Scale of Hardness determines the hardness of minerals by scratching them with commonly found objects. The minerals are assigned a number which corresponds to their hardness; higher numbers indicate higher hardness.
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
The mineral hardness scale is called the Mohs scale of mineral hardness, named after German geologist Friedrich Mohs who created it in 1812.
Limonite has a hardness of about 4 to 5.5 on the Mohs hardness scale.
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
Flint has a hardness of 7 on the Mohs scale of hardness.
The hardness is 3-4 on Mohs scale.
Nickel has a hardness of 4 on the Mohs scale.
Dolomite has a hardness of 3.5 to 4 on the Mohs hardness scale.
The Mohs scale is used to determine the relative hardness of minerals.
Talc is a mineral that ranks as the softest mineral on the Mohs Hardness Scale, with a rating of 1. This means that talc is very easily scratched by harder minerals.
Aluminum Oxide is roughly 8.5 - 9.0 on the hardness scale.