Hand Tools Archive

Subject:
what's the difference?
Response To:
But... ()

Bill Tindall, E.Tn.
If the reference substance is water aren't they the same value? Indirectly we are measuring the porosity of the stone relative to quartz. I presume the silica in these rocks is crystallized.

It seems the price goes up as the material approaches silica with no pores. I wonder how the performance of the most dense stones compares to chert.

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