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USA | |
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| Min. Col. PA
Geyer, Smith, Barnes, pgs. 28-30 |
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| (prospector field notes) |
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| From a one time find in in the 2000's by Pennsylvania mineral collector Joseph A. Dague, via Ron Slotto. |
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| Rocks & Min.: 17:340. |
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| Ref.: Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153. |
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| Rocks & Min.: 20:114. |
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| The Mineralogy of Pennsylvania, Samuel G. Gordon, 1922, p. 37 |
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| Sloto, R.A. (1989). Famous mineral localities: The Phoenixville, Lead silver mines, Chester County, Pennsylvania. The Mineralogical Record, 20(5), 369-386. |
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| Samuel G. Gordon (1922) "Mineralogy of Pennsylvania" p. 202. |
- Cornwall Borough (Cornwall)
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
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| Smith, R. C. II, Hoff, D. T. (1984) Geology and mineralogy of copper-uranium occurrences in the Picture Rocks and Sonestown quadrangles, Lycoming and Sullivan Counties, Pennsylvania. Mineral Resource Report M80. Pennsylvania Geological Survey |
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| Smith, R. C. II, Hoff, D. T. (1984) Geology and mineralogy of copper-uranium occurrences in the Picture Rocks and Sonestown quadrangles, Lycoming and Sullivan Counties, Pennsylvania. Mineral Resource Report M80. Pennsylvania Geological Survey |
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| Smith and Hoff (1984) |
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| Smith, II, R. C. and D. T. Hoff (1984) |
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| Smith and Hioff (1984) |
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| Newhouse, W.H. (1933) Mineral Zoning in the New Jersey, Pennsylvania, Virginia Triassic area, Economic Geology, 28, 613-633. |
- Lower Pottsgrove Township
| Robert C. Smit, II Ph.D, P.G. |
- Lower Providence Township
| Boucot, Arthur James (1949) Notes on the Ecton Mine, Montgomery County, Pennsylvania. Rocks & Minerals, 24(9-10), 492-495. |
- C.K. Williams Quarry complex
| Rocks & Min.: 17:344. |
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| Mineralogy of Pennsylvania-1922
Samuel S. Gordon, pg. 229 |
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| Geyer, Smith, Barnes, (1976)
Mineral collecting in Pennsylvania
pg 226-228 |
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| Gems and Minerals of America- Jay Ellis Ransom-1974 |
Copper Hollow, Beaver Lake Adits cluster, Lycoming County, Pennsylvania, USA