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4 votes
If a mineral leaves a red trail when scraped against an unglazed porcelain plate,which property of mineral is being measured?

User Unda
by
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2 Answers

3 votes

The answer is color because it leaves a red trail

User Garth Marenghi
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7 votes
You are testing the hardness of the mineral. You would probably have a table to help you determine the mineral from the hardness.
User Tariq
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