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    •  Science >> Science Discoveries >  >> Geology
    Minerals Harder Than Calcite, Softer Than Quartz: Fluorite & Apatite
    The two minerals harder than calcite but softer than quartz are:

    * Fluorite: It has a Mohs hardness of 4, while calcite is 3 and quartz is 7.

    * Apatite: It has a Mohs hardness of 5, falling between calcite and quartz.

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