Corundum has a value of nine and talc has a value of one on, for 10 points, what scale that measures a mineral's hardness?
Alternatives to it include the Knoop test, the Vickers test, and measurement with a sclerometer ("sclair- AH-meh-tuhr"). Although decimal values are allowed, it is more common to say that an object's value is between that of two reference materials based on the scratch test. Corundum has a value of nine and talc has a value of one on, for 10 points, what scale that measures a mineral's hardness?
Alternatives to it include the Knoop test, the Vickers test, and measurement with a sclerometer ("sclair- AH-meh-tuhr").
{Mohs} scale