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USA | |
| Beste, Bob (1996) Location Guide for Rockhounds in the United States (2nd ed.) Vol. 2 - Part II - Illinois to North Dakota. Rocks & Min.: 63:194-200 |
| Gems & Minerals 395:28-29 (1970). Sinotte, S.R. (1969) The Fabulous Keokuk Geodes, Vol. 1. Origin, Formation and Development in the Mississippian Lower Warsaw Beds of Southeast Iowa and Adjacent States. 292 pp. |
- Cave-In-Rock Mining Sub-District
| Goldstein, Alan (1997) Famous Mineral Localities: The Illinois-Kentucky Fluorite District. The Mineralogical Record, 28 (1) 3-49 |
| Mineralogical Record (1997) 28:3-49 |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
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| Bob Harman collection |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893 |
| Zeitner (1956), Midwest Gem Trails |
| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 |
| Martin R. Lee & Rachael Ellen (2008). Aragonite in the Murray (CM2) carbonaceous chondrite: Implications for parent body compaction and aqueous alteration. Meteoritics & Planetary Science 43, #7, 1219-1231. (Oct 2008). |
- Mammoth Cave National Park
| Siegel, Frederic R. (1965). Aspects of Calcium Carbonate Deposition in Great Onyx Cave, Kentucky. Sedimentology 4:285-299. |
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| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 |
| Collecting on site |
- Illinois - Kentucky Fluorspar Mining District
| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 Mineralogical Record (1997) 28:3-49 Econ Geol (1994) 89:288-306 |
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| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 |
| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 |
| E.L. Clopton collection #256 |
State Route 37 road cut, Bloomington, Monroe County, Indiana, USA