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USA | |
| [var. Ripidolite] S. G. Gordon, "The MIneralogy of Pennsylvania," 1922, p. 152 |
| The Mineralogy of Pennsylvania 1966-1975 Robert C. Smith pg. 82-83, Table4 pg. 78 |
| Gordon: Mineralogy of Pennysylvania, 1922 p. 159 |
| [var. Sheridanite] Yale Peabody Museum Mineralogical Magazine 1954 30 : 277-292 |
| Stuart Herring |
| Mineralogy of Pennsylvania - 1922 Samual S. Gordon, pg. 173 |
| [var. Chromium-bearing Clinochlore] Mineralogy of Pennsylvania - 1922 Samuel S. Gordon, pg. 181 |
| [var. Colerainite] Gordon, 1922. Mineralogy of Pennsylvania, p.125 |
| Dana 6:1068 Rocks & Min.: 21:22. |
| Lapham & Geyer, 1965. Mineral Collecting in Pennsylvania |
| [var. Chromium-bearing Clinochlore] Pearre, N. C., Van Heyl, A. (1960) Chromite and other mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania, and Delaware. Bulletin Vol. 1082 (1082k) US Geological Survey doi:10.3133/b1082k A.Mathauser collection |
| [var. Chromium-bearing Clinochlore] The Mineralogy of Pennsylvania, 1875-1922 Samuel G. Gordon, Pg. 204. |
| Stuart Herring |
| [var. Chromium-bearing Clinochlore] The Mineralogy of Pennsylvania - 1922 Samual G. Gondon |
| |
| Mineralogy of Pennsylvania-1922 Samuel S. Gordon, pg. 221-222 |
| Doris Chambers |
Brinton's Quarry, Westtown Township, Chester County, Pennsylvania, USA