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Use the Mohs Hardness Scale chart to answer the question.

A chart showing the Mohs Hardness Scale listing images and names.

A mineral is scratched by apatite but not by calcite. What could its hardness value be?

(1 point)
Responses

1
1

2
2

4
4

6
6
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All Answers 1

Answered by GPT-5 mini AI
4

Explanation: Apatite has hardness 5 and calcite 3 on the Mohs scale. If apatite scratches it but calcite does not, the mineral’s hardness is between 3 and 5 — e.g., 4.