Talc is the mineral with a hardness of 1 on the Mohs scale.
Galena is listed at 2.5 on the Mohs scale of mineral hardness.
Talc (1 on the Mohs Hardness Scale) can be scratched by a fingernail.
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.
Tals, a mineral, has a hardness of 1 on the Mohs scale of relative mineral hardness, a 1 being the one able to be scratched by the remaining nine minerals. It's soft.
Galena is listed at 2.5 on the Mohs scale of mineral hardness.
Talc.
It's called the Mohs scale of mineral hardness.
Talc (1 on the Mohs Hardness Scale) can be scratched by a fingernail.
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.
Tals, a mineral, has a hardness of 1 on the Mohs scale of relative mineral hardness, a 1 being the one able to be scratched by the remaining nine minerals. It's soft.
The softest known mineral is 'TALC'. The hardest known mineral is 'DIAMOND' (according to Friedrich Mohs scale)
Talc is the softest mineral and classified as 1 on the Mohs hardness scale.The Mohs scale minerals from softest to hardest:1. Talc (softest)2. Gypsum3. Calcite4. Fluorite5. Apatite6. Feldspar7. Quartz8. Topaz9. Corundum10. Diamond (hardest)
Coal, as an organic sedimentary rock, is not determined to have a hardness on the Mohs scale of mineral hardness.
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.
The mineral that can be scratched by a penny is talc. Talc is the softest mineral on the Mohs scale, with a hardness of 1. A penny has a hardness of around 3.5 on the Mohs scale.