6hekmtr ((BYSSOLITE)), $20 MINIMUM BID, Keystone Trap Rock Quarry, Cornog, Wallace Township, Chester County, Pennsylvania, 10 x 7 x 2.5 cm, Cabinet | |
Here is a old classic Pennsylvanian location that is now a water filled pond. Here is a cabinet sized specimen is a large mass of Byssolite. Within the Byssolite are individual crystals of jackstraw Prehnite and perhaps other minerals. |