| | Description | |
| Comments: | Early in the 1950's Excellent crystals were being collected in amphibolite gneiss at this location. crystals ranging from minute needles to stout prismatic crystals six inches long to one inch across. In 1960, the first accurate identification of Clinozoisite in PA was made by D. M. Lapham, PA. Geo. Survey, using specimens from this site. | | Habit: | Prismatic, somewhat rectangular in cross section, rarely terminated | | Colour: | greenish qrey to pale greyish brown | | Quality of samples: | Good crystals or rich for species - important (!) | | Rarity at site: | Common | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania. A. Montgomery "The Mineralogy of Pennsylvania 1922-1965" pgs. 44-45" | | Data | |
| Mineral Data: | Click here to view Clinozoisite data | | Locality Data: | Click here to view Keystone Trap Rock Quarry, Cornog, Wallace Township, Chester Co., Pennsylvania, USA | | Photo Gallery | View Gallery (6 photos) |
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