Diamond, with a hardness of 10 on the Mohs scale.
It's called the Ore
The numbers on the Mohs hardness scale represent the relative hardness of minerals. The scale ranges from 1 (softest) to 10 (hardest), with each number corresponding to a different mineral's ability to scratch or be scratched by another mineral.
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.
The softest known mineral is 'TALC'. The hardest known mineral is 'DIAMOND' (according to Friedrich Mohs scale)
This scale was proposed by the Austrian geologist Friderich Mohs.
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.
Both will be grated as 10 on the Mohs scale, the highest number to indicate the hardest mineral.
It's called the Ore
a mineral that has a low number on 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.
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.
The Mohs mineral scale was named after German mineralogist Frederich Mohs (1773-1839)
The numbers on the Mohs hardness scale represent the relative hardness of minerals. The scale ranges from 1 (softest) to 10 (hardest), with each number corresponding to a different mineral's ability to scratch or be scratched by another mineral.
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.
The fourth mineral on Mohs' Scale of Hardness is fluorite. It has a hardness of 4 on the scale.
The softest known mineral is 'TALC'. The hardest known mineral is 'DIAMOND' (according to Friedrich Mohs scale)