topaz will not leave a streak on an unglazed porcelain plate. why

User Generated

serfugnu

Science

Description

what method could be used to observe the streak of the topaz mineral?

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Explanation & Answer


Topaz is harder than unglazed porcelain, and leaves a scratch rather than a streak. Streak is the color of the powder of a mineral. To observe the steak of the topaz material, you scratch it with a harder mineral, or another mineral equally hard, and then you look at the color of the streak


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