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________ ,a type of stone ,was …

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________ ,a type of stone ,was widely used for making tools and weapons
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Visalatchi S 5 years, 1 month ago

mineral quartz, categorized as the variety of chert that occurs i

Meghna Thapar 5 years, 1 month ago

Flint is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Flint was widely used historically to make stone tools and start fires. It occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones. Flint has been used by humans to make stone tools for at least two million years.  The conchoidal fracture of flint causes it to break into sharp-edged pieces.

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