06hlkmis ((BYSSOLITE, minor ADULARIA, CLINOZOISITE, and ACTINOLITE)), $10 MINIMUM BID, Keystone, Trap Rock Quarry, Cornog, Chester County, Pennsylvania, 6 x 6 x 2 cm, Miniature, | |
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 a solid carpet of grey green Byssolite on the volcanic trap rock matrix. Also under the Byssolite are also Adularia, Clinozoisite, and Actinolite. |