8hlkmr ((BYSSOLITE on ADULARIA with minor CLINOZOISITE)), $5 MINIMUM BID, Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania, 4 x 3 x 3 cm, Miniature | |
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 miniature sized specimen with hairlike Byssolite on twinned Adularia with minor brown Clinozoisite crystals. ex Rick Haefer collection. |