Diamond, with a hardness of 10 on the Mohs scale.
Friedrich Mohs is famous for creating the Mohs scale of mineral hardness. He formulated a scale of one to ten and assigned each mineral a value. This eventually became the basis for the Mohs scale.
It's called the Ore
The Mohs scale measures the hardness of a mineral. Kaolinite, which is a clay mineral and part of the group of industrial minerals, has a Mohs scale value of 2-2.5.
Talc is the softest mineral on the scale
Orthoclase feldspar is 6 on the Mohs scale of mineral hardness.
10 is the hardest mineral on the scale. Since Mohs understood this to be the diamond (based on tests scratching different minerals) the diamond was designated a 10.
Iodine is not recognized as a mineral, and therefore is not assigned a number on the Mohs Scale of mineral hardness.
a mineral that has a low number on the mohs scale
Both will be grated as 10 on the Mohs scale, the highest number to indicate the hardest mineral.
the mohs hardness scale
Friedrich Mohs is famous for creating the Mohs scale of mineral hardness. He formulated a scale of one to ten and assigned each mineral a value. This eventually became the basis for the Mohs scale.
One of the best known scale is the Mohs scale. This is a purely ordinal scale for minerals and essentially states that a mineral with a higher Mohs value will scratch a mineral with a lower Mohs value. A mineral with a Mohs value twice as large is not twice as hard. A low value is 0.2 for Cesium. Diamond with a Mohs value of 10 is a high value although nanocrystalline diamond exceeds that value.
The Mohs mineral scale was named after German mineralogist Frederich Mohs (1773-1839)
Diamond is the hardest natural substance which is at all common, and was given the highest number on the Mohs scale, 10. Some synthetic nanomaterials and a couple of very rare minerals are harder.
It's called the Ore
The Mohs scale measures the hardness of a mineral. Kaolinite, which is a clay mineral and part of the group of industrial minerals, has a Mohs scale value of 2-2.5.
Ruby, a variety of the mineral corundum, has a hardness of 9 on the Mohs scale of mineral hardness.