The Mohs hardness scale rating for brass is around 3 to 4.
Nickel has a hardness of 4 on the Mohs scale.
Coal, as an organic sedimentary rock, is not determined to have a hardness on the Mohs scale of mineral hardness.
Stainless steel has a hardness level of around 5.5 on the Mohs scale.
Sulfur is a relatively soft mineral, with a hardness of 2 on the Mohs scale. It can be scratched by minerals with a higher hardness, such as calcite (3 on the Mohs scale) and fluorite (4 on the Mohs scale).
Phosphate minerals do not have a specific hardness on Mohs scale because the hardness of a mineral is determined by its crystal structure and chemical composition. Each phosphate mineral can have a different hardness depending on its specific properties. However, some common phosphate minerals like apatite typically have a hardness of around 5 on the Mohs scale.
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
It's called the Ore
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
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.
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
Nickel has a hardness of 4 on the Mohs scale.
The hardness is 3-4 on Mohs scale.
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.
Amethyst, a variety of quartz, has a hardness rating of 7 on Mohs scale.
The Mohs scale is used to determine the hardness of minerals. It assigns a hardness rating from 1 (softest) to 10 (hardest) based on the ability of one mineral to scratch another.