The resistance of a mineral to scratching; it is a property by which minerals may be described, relative to a standard scale of ten minerals known as the Mohs scale, to the technical scale of fifteen minerals, or to any other standard.
The resistance of a mineral to scratching; it is a property by which minerals may be described, relative to a standard scale of ten minerals known as the Mohs scale, to the technical scale of fifteen minerals, or to any other standard.