KNIFE RIVER SILICIFIED LIGNITE
MOUNTRAIL COUNTY, NORTH DAKOTA
COPYRIGHT FEBRUARY 28, 2007 PETER A. BOSTROM
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This large Folsom preform was found several years ago
on the shore line of Sakakewa lake in Mountrail County,
North Dakota just west of New Town.
It was was found in
two pieces, four years apart. This Folsom preform was
broken during manufacture when the second flute was
Failed preforms, like this example, provide
flintknappers with important clues that
allow them to reconstruct each stage of the manufacturing
process. In this case a Folsom point.
This Folsom was made from Knife River flint (silicified
lignite) and it measures 4 1/16 inches (10.3 cm) long.