Mohs scale The ten point scale of mineral hardness, keyed arbitrarily to the minerals talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond.
(Mohs; scale; The ten point scale of mineral hardness) (Mohs; keyed arbitrarily; to the minerals talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond)
Mohs Mohs
scale keyed arbitrarily
The ten point scale of mineral hardness
to the minerals talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond