asked 124k views
5 votes
What would you expect to happen if you rubbed a mineral of hardness 7.5 against a piece of quartz?

asked
User Osyotr
by
7.1k points

2 Answers

3 votes
Quartz also has a hardness level of 7.5, so rubbing another mineral with a 7.5 will not affect it. Hope this helps
answered
User Innospark
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8.7k points
2 votes
you would expect a scratch on the quartz since quartz is on a hardness scale of 7 and the mineral you are rubbing against it is at a hardness scale of 7.5
answered
User ZpfSysn
by
8.5k points
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