06hlkmis ((BYSSOLITE)), $10 MINIMUM BID, Keystone, Trap Rock Quarry, Cornog, Chester County, Pennsylvania, 8 x 3.5 x 2.5 cm, Cabinet | |
Here is a old specimen from a defunct locality of a quarry filled with water. It is also a classic Pennsylvanian locality. This specimen has wavy Byssolite on a trap rock matrix. |