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Science · Earth sciences
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3. Suppose you had a mineral and you decided to test its hardness (pg 62-63, Fig. 3.3). You found that it was able to be scratched by a copper penny, but not by your fingernail. Based on your findings, answer the following questions. Would you describe this mineral as HARD or SOFT? Hint: Any mineral that can scratch glass (H 5.5) is considered hard a. b. What is the hardness of this mineral? c. What mineral could this be, based on the Mohs Hardness Scale (Table 3.1, pg 62)?
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