Retrieving "Grinding Stone" from the archives

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1. Quartzite

   Linked via "grinding stones"

   Lithic Tool Production
   In prehistoric contexts, while chert and obsidian were preferred for fine edge work due to their conchoidal fracture, quartzite was utilized extensively for heavy-duty crushing implements, grinding stones, and hammerstones, leveraging its superior toughness over less metamorphosed sandstone.
   Piezoelectric Properties