Quartz hole day 4. Also found a " Black stone knapping Area." Only unfinished peices

[Edgychris]

Quartz hole day 4. Also found a " Black stone knapping Area." Only unfinished peices

Hi so done uploading shards from quartz hole. Here' one pic of a quartz point, missing tip. Found today. Also came across tons of shards of black stone. Some are cruedly worked. Factors wernt the best today. But here we are...

 

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[Charl]

The greenish flakes in the very last photo are clearly argillite. Here in New England, our argillite is actually argillaceous slate. The grainier argillite from NJ/Pa is actually argillaceous shale, and known as Lockatong argillite. It is found on sites in New England, but your greenish flakes are either Barrington Argillite, which outcrops in RI, or Nantasket argillite, sourced in Ma. These argillites can also be blue-grey, or mostly grey, so possibly your grey rocks might also be argillite. I just can't be certain from the photos.