L-866 (Gunflint Jasper/Taconite): Not a collection from archaeological context. Unknown collection procedure. Collection includes raw material, modern flint-knappers' work, and naturally-weathered ...

The study of remarkably interesting geological phenomena splendidly displayed in a high and rugged mountain region, combined with numerous experiences in camp and along the trail, was the lot of the ...

L-272 (Saugus Rhyolite): Not a direct collection from outcrop. Provenience includes gravle deposits and glacial drift. Not a collection frokm archaeological context. Unkown collection procedure. L-272 ...

Grain growth rates for novaculite, flint and jasper have been determined between 1000° and 800°C and 15 to 2 kb water pressure. A pre-treatment established an equilibrium microstructure and a nearly ...