Here are where certain minerals fall on the hardness scale: 1--Talc 2--Gypsum 3--Calcite 4--Fluorite 5--Hornblende 6--Feldspar 7--Quartz 8--Topaz 9--Corundum 10--Diamond Rocks of hardness 6 and 7 will scratch rocks of hardness 1, 2, 3, 4, and 5.
(certain minerals; fall; on the hardness scale) (Here; are; ) Context(Here are,List([0, 8))):(Talc 2; will scratch; rocks of hardness 1)
Here are,List([0, 8))
certain minerals Here Talc 2
fall are will scratch
on the hardness scale
rocks of hardness 1