Fill in the blanks:

Question

1. Minerals are classified in many ways, including hardness, streak, and _______ properties.

2. There are some minerals that are valued as _______ because of their hardness, color, and beauty.

3. Non-silicates make up less than 10% of Earth's _______; the most common non-silicates are the carbonate, oxides, and sulfides.

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Answer 1

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