Color:
Kalkberg Chert ranges in color from a grayish blue to a black.
This chert is heavily cloudy by opaque patches. Clastic quartz is
present.
Texture:
Fine grain
Luster: Waxy to glossy
Translucency:
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping:
Distribution:
Distribution Comments:
Kalkberg Chert is associated with the Kalkberg Formation of the
Helderberg Group. Primary exposures occur in the Hudson Valley and
in Cherry Valley west of Albany, New York.
Projectile point made from this material:
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