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earnstyle [38]
3 years ago
13

Why don’t all 1200 minerals leave a streak on the streak plate?

Biology
1 answer:
ludmilkaskok [199]3 years ago
3 0
<span>Some minerals have different hardnesses. Some minerals are harder than the streak plate and, therefore, will not leave a marking. Only those that are softer than the plate will be able to leave a streak. Those harder than a 6.5 Mohs reading will possibly scratch the plate itself.</span>
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