Which mineral is hard enough to scratch calcite? * 1 talc
2 sulfur
3 halite
4 quartz

Should be number 4, quartz.

Explanation:

Quartz is rougher than calcite, therefore it's able to scratch it.

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

answer; talc and gypsum;