If you look on the label of your toothpaste, you will see that many contain the mineral fluorite. Your teeth, ironically, are made up of the mineral apatite. Based on what you
know about hardness (and using the table below of Moh's Hardness Scale below),
explain why fluorite is used in toothpaste rather than a mineral like quartz. In your
response, why fluorite is used and include two examples of why other minerals would
not be as beneficial.