Which of the following minerals can be scratched by a fingernail?Group of answer choicesOrthoclaseApatiteFluoriteGypsumQuartz
Question
Solution 1
The hardness of a mineral is determined by the Mohs scale. This scale ranks minerals from 1 (softest) to 10 (hardest). A fingernail has a hardness of about 2.5 on the Mohs scale.
Looking at the minerals listed:
- Orthoclase has a hardness of 6 on the Mohs scale.
- Apatite has a hardness of 5 on Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
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