I found these scattered on a NorthShore MA beach. These pieces have 2 distinct colors, a shade of yellow and gray. My area is not known for having chert, nor anything like agate. I have heard people talking about finding ballast flint from ocean going boats during colonial times. Is this what I found? Also interesting is that one piece of this material has a fossil shell in it. I though it was one of the limpets I had to pick off the some of the pieces but it is certainly a part of the rock.
If more pictures are needed let me know which one you would like more of.
If more pictures are needed let me know which one you would like more of.
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