even though it was no better or easier to obtain than local varieties of chert. In Ohio, the spectacularly multicolored Flint Ridge flint was preferred by the Middle Woodland societies who ...

9 Corundum (flint, chert, trap rock, basalt), and 10 Diamond. A mineral of a given hardness can scratch all minerals of a lesser hardness but can scratch no minerals of a greater hardness.

Incisions on the cortex (soft outer layer) of flint or chert flakes are known from Middle and Lower Paleolithic sites across Europe and the Middle East. However, it can be difficult to determine ...

This is a pristine flint blade made from chert of the Upper Chalk of the North Downs. I found this flint knife while running in a race. It was exposed by rain. I stopped to pick it up. It has the ...