The softest material just next to talc in the Mhos scale is_________________?
Correct answer: D. Gypsum
- A. Quartz
- B. Fluorite
- C. Feldspar
- D. Gypsum
Explanation
On the Mohs scale, talc has hardness 1 and gypsum has hardness 2, making gypsum the next softest standard mineral. Fluorite, quartz and feldspar have substantially higher hardness values.
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