| 8hlkmis ((PREHNITE, BYSSOLITE)), $10 MINIMUM BID, Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania, 6 x 6 x 5 cm | |
 | Here is a classic Alpine deposit in a classic Pennsylvania location. Jackstraw Prehnite crystals covered with needles of Byssolite with a reddish brown tint from the breakdown of Pyrite to iron oxide. |
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