Asked in Uncategorized
What is the hardness of rock salt?
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Asked in History of Science, Geology
If rock A cuts across rock B what does this indicate about their hardness?
Asked in Coal (fuel source)
What is the hardness of coal on the Mohs hardness scale?
Asked in Science
How do you test the property of HARDNESS?
Asked in Rocks and Minerals
What is a scale used to measure the hardness of a rock called?