6hlkmis ((SAGENATED QUARTZ)), $10 MINIMUM BID, Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania, 4 x 3.5 x 3 cm, Miniature | |
The crushed stone quarry is precambrian, Grenville, amphibolite gneiss and this specimen is from the classic Alpine cleft type hydrothermal recrystallization. This is a classic Pennsylvania locality with the quarry currently filled with water and no collecting possible without diving equipment or holding your breath a long time. Here is an uncommon specimen of Sagenated Quartz from this classic locality. This Quartz is naturally etched and partially dissolved. ex Rick Hafer collection. |