a lab for middle school students
look it up on the mohs scale
He originally came up with the scale when classifying a private collection. He classified them by their physical characteristics rather than their chemical composition, using their relative hardness.
It's called the Ore
The softest known mineral is 'TALC'. The hardest known mineral is 'DIAMOND' (according to Friedrich Mohs scale)
The Mohs mineral scale was named after German mineralogist Frederich Mohs (1773-1839)
Ruby, a variety of the mineral corundum, has a hardness of 9 on the Mohs scale of mineral hardness.
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.
Gypsum is the mineral listed at 2 on the Mohs hardness scale.
The hardest mineral is diamond, and the softest mineral is talc.
Iodine is not recognized as a mineral, and therefore is not assigned a number on the Mohs Scale of mineral hardness.
The fourth mineral on Mohs' Scale of Hardness is fluorite. It has a hardness of 4 on the scale.