The Mineral Identification Key Copper, Michigan, Seaman Museum specimen

Section II: Minerals with a Non-Metallic Luster & Hardness Greater than 2½

Step 7: Can the mineral be scratched by a copper penny? (Hardness less than 3?)
Yes - [Go to Step 8]
No - [Go to Step 10]

Step 1       Step5      Hardness

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