| 8hlkmis ((BYSSOLITE on ADULARIA on AMPHIBOLITE GNEISS)), $5 MINIMUM BID, Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania, 5 x 4 x 1 cm, Miniature | |
_small.jpg) | Old material from an old Pennsylvania collection from a now flooded quarry and Pennsylvania classic locality. Minerals are from an Alpine cleft type hydrothermal recrystalllization per mindat.org. Matrix trap rock is Precambian igneous Amphibolite Gneiss. Here is a group of white Adularia covered by hairlike Byssolite on a sliver of gneiss. ex Rick Haefer collection. |
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