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Geology
Rocks and Minerals

What is the softest mineral?

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November 02, 2011 11:45PM

Talc is the softest mineral.

The Mohs hardness scale goes like this, from softest to hardest: 1. Talc, 2. Gypsum, 3. Calcite, 4. Fluorite, 5. Apatite, 6. Orthoclase Feldspar, 7. Quartz, 8. Topaz, 9. Corundum, 10. Diamond.