Latitude: 40°4'36"N
Longitude: 75°44'54"W
A crushed stone quarry in Precambrian (Grenville) amphibolite gneiss within the Honeybrook uplift. The mineral assemblages for which this locality is well known, are the product of alpine cleft type hydrothermal recrystallization.
References
Montgomery, A., et al (19__), Mineralogical Record: 2(1): 18-25 & 36.
Lapham, Davis M. & Geyer, Alan R. (1965), Mineral Collecting in Pennsylvania: 55.
Hess, David F. (1966), "The Occurrence of Axinite and Assoc. Mins. in the Keystone Trappe Rock Quarry, at Cornog," in Montgomery, PM (July & August): 43, 44.
Montgomery, A. (1966), Keystone Newsletter, Pennsylvania Minerals (PM): 41-42.
Montgomery, A. (1968), Pennsylvania Minerals (November): 71.
Lapham, Davis M. & Geyer, Alan R. (1969), Mineral Collecting in Pennsylvania: 56-57.
Reed, Juliet C. (1976), Annotated Bibliography of Minerals New to the Pennsylvania List 1965-1974, The Mineralogical Society of Pennsylvania, Inc.: 16-17, 38-39.
Mineral List
25 entries listed. 17 valid minerals.
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