22 November 2021

Sequence 7



Sequence 7

The unclued entries provide the ten levels of hardness in Moh’s scale.

 

1. Talc, 2. Gypsum, 3. Calcite, 4. Fluorite, 5. Apatite

6. Orthoclase, 7. Quartz, 8. Topaz, 9. Corundum, 10. Diamond


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