For a science experiment, a student rubs a mineral against a porcelain plate. The students has just performed

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asked Sep 9, 2017 206k views

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Dennis Hunziker · Answer 1 · 2017-09-13T17:05:03+0000

A streak test. If you rub a mineral across a porcelain plate or tile you can examine the streak it leaves. This lets you identify the mineral you are rubbing.

For a science experiment, a student rubs a mineral against a porcelain plate. The students has just performed

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