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Mrrafil [7]
3 years ago
14

If a mineral can scratch fluorite and it can be scratched by a knife what is the hardness of the mineral

Biology
1 answer:
alukav5142 [94]3 years ago
7 0

Answer:

The hardness rating is 4.

Explanation:

Calcite sits at a hardness rating of 3 and is very easily scratched with a knife and/copper coin.  This is where most Marbles, limestones, travertines, rate.

Meanwhile, Fluorite sits at hardness 4 and can be scratched by a knife.

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