8hlkmis ((BYSSOLITE)), $10 MINIMUM BID, Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania, 7 x 3.5 x 2 cm, Cabinet | |
Here is a classic Alpine deposit in a classic Pennsylvania location. A billo pad like specimen of Byssolite needles with a reddish brown tint from the breakdown of Pyrite to iron oxide. |