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Rock Cycle - Minerals (5A)
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Rock Cycle - Minerals (5A)
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How can you tell if a mineral is hard or not?PROBLEM:
PREDICTION:
PROCEDURE: Let's try to figure out the hardness of the minerals in your collection. We will develop a hardness scale by using a fingernail, a copper penny, and a steel nail as standards. State whether the following minerals are softer than or harder than the fingernail, copper penny and the steel nail.
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SOFTER THAN |
HARDER THAN |
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fluorite |
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gypsum |
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feldspar |
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olivine |
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hematite |
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apatite |
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mica |
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quartz |
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talc |
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calcite |
CONCLUSION:
Make a scale from the softest mineral (1 is the softest) to the hardest (10 is the hardest).
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2. 3. 4. 5. |
6.
7. 8. 9. 10. |
