An unknown mineral will scratch feldspar but will not scratch corundum.Based on Moh’s scale, which mineral is most likely the unknown mineral?Select one:Diamondhighlight_offTopazhighlight_offCalcitehighlight_offApatitehighlight_off
Question
An unknown mineral will scratch feldspar but will not scratch corundum.Based on Moh’s scale, which mineral is most likely the unknown mineral?Select one:Diamondhighlight_offTopazhighlight_offCalcitehighlight_offApatitehighlight_off
Solution
Based on Moh's scale of mineral hardness, the unknown mineral is most likely Topaz. This is because Topaz has a hardness of 8, which is harder than Feldspar (which has a hardness of 6), but softer than Corundum (which has a hardness of 9). Therefore, Topaz can scratch Feldspar but not Corundum.
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