AN-2 (Arkansas Novaculite, Variety 2): This is a gray-black to coal black variety. The texture is fine to medium and the stone is knappable without heat treatment. In fact thermal pretreatment makes ...
AN-7A (Arkansas Novaculite, Variety 7A): This is a brick red to dark red solid colored variety. Subvariety 7-A is red in a white field or banded red and white. Sometimes the red and white marks a ...
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