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USA | |
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| Rocks & Minerals 81:229-234 |
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| Stose, George W. and Bascom Florence (1932) The Geology and Mineral Resources of Adams County, Pennsylvania, USGS Bulletin 136, pp. 124. |
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| The Mineralogy of Pennsylvania 1966-1975
Robert C. Smith II, pg. 232, Table 27 |
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| USGS National Geochemical Database :Rocks File W173601 and W173606 |
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| Cummings, Warren (2007), Geologist, New Jersey Department of Transportation, personal communication to Mindat.org. |
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| Mineralogy of Pennsylvania-1922
Samuel S. Gordon, pg. 167 |
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| Reed, Juliet C. (1976), Annotated Biblio. of Minerals New to the Pennsylvania List 1965-1974, The Mineralogical Society of PA, Inc.: 60
Grant, Raymond W. (Feb, 1971), "Pennsylvania Minerals (PM), PM(98), Keystone Newsletter.
Mineralogy of Pennsylvania - 1922
Samual S. Gordon, pg. 173 |
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| Bob Massey micromount collection, # GRM 1821 |
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| Mineralogy of Pennsylvania - 1922
Samuel S. Gordon, pg. 181 |
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| Mineralogy of Pennsylvania-1922
Samuel S. Gordon, pg. 181 |
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| Mineralogy of Pennsylvania, S. Gordon, pg.186 |
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| Joe Dunleavy (Pers. Comm.) |
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| [Peristerite var. Albite Moonstone] Gordon's Mineralogy of Pennsylvania (1922) p. 191 |
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| [Peristerite var. Albite Moonstone] Gordon, "Mineralogy of Pennsylvania" 1922 p. 193. |
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| Rocks & Min.:59:109-120. |
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| Rocks & Min.: 59:109-120 & 62:176-178. |
- Upper Providence Township
| [var. Oligoclase] Mineralogy of Pennsylvania - 1922
Samuel S. Gordon pgs. 199-200 |
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| Thomlinson, Harold W. (1942). Idiomorphic Cordierite From Safe Harbor, Pennsylvania. American Mineralogist 27:646-648. |
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| Mineral collecting in Pennsylvania, 1965 - Lapham & Geyer, pg. 130 |
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| Collected April of 2012- David S. Bernstein |
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| Hietanen, Anna (1941) Chloritoid from Rawlinsville, Lancaster County, Pennsylvania, American Mineralogist, v. 36, p. 859-868. |
- Cornwall Borough (Cornwall)
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
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| USGS National Geochemical Database : Rocks File W173602 |
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| Gordon, S.G. (1922) "The Mineralogy of Pennsylvania," Special Publication No. 1, The Academy of Natural Sciences of Philadelphia: p. 213. |
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| A. Geyer, R. Smith III, J. Barnes (1976) Mineral collecting in Pennsylvania: 189-192 |
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| [var. Oligoclase] Gordon - Min. Penn. (1922) p. 219 |
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| Mineralogy of Pennsylvania-1922
Samuel S. Gordon, pg. 221-222 |
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| [var. Oligoclase] Gordon, 1922. Mineralogy of Pennsylvania |
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| Mineralogy of Pennsylvania-1922
Samuel S. Gordon, pg. 229 |
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| [var. Oligoclase] Gordon, S. G. (1922) The Mineralogy of Pennsylvania, Special Publication No. 1, The Academy of Natural Sciences of Philadelphia, p. 230. |
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| [var. Oligoclase] Mineralogy of Pennsylvania-1922
Samuel S. Gordon, pg. 229 |
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| [var. Oligoclase] Benge and Wherry, XIII, 1906, 92 |
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| Samuel G. Gordon (1922) "Mineralogy of Pennsylvania" p. 225. |
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| Samuel G. Gordon (1922) "Mineralogy of Pennsylvania" p. 225. |
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| [var. Oligoclase] Samuel G. Gordon (1922) "Mineralogy of Pennsylvania" p. 225. |
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| Gordon, "Mineralogy of Pennsylvania," 1922 p. 228. |
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| Gordon: Min. Penn (1922) p. 230 |
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| Gordon, 1922. The Mineralogy of Pennsylvania |
Mineral Hill, Elwyn, Middletown Township, Delaware County, Pennsylvania, USA