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USA | |
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| Evernden,J.F.,Curtis,G.H.,Obradovich,J.D.,and Kistler,R.W.,(1961) On The Evaluation of Glauconite and Illite For Sedimentary Rocks By The Potassium-Argon Method:Geochimica Et Cosmochimica Acta,v.23,p.78-99 |
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| USGS National Geochemical Database :Rocks - File W220141 |
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| USGS : Midway Group |
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| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey
Rocks & Min.: 61:138-142 & 64:230. |
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| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
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| Alan Goldstein collection. |
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| Alan Goldstein collection. |
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| Alan Goldstein collection. |
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| Rocks & Min.: 61:144-145. |
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| Midwest Chapter Newsletter Volume 29 No.6:10 |
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| Erd(1960).
Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey
Rocks & Min.:61:146 |
- Indiana University Campus
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
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| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
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| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
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| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
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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 |
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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 |
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| Alan Goldstein |
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| Goldstein, A. (2010) Mineral News, 26, #8, 9-10. |
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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 |
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| John Krygier specimen |
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| Sherwood, Mark D., Williams, Glenn A. (1998) Missouri Mineral Locality Index. Rocks & Minerals, 73 (2) 98-117 doi:10.1080/00357529809603046 |
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| James Cheshire collection |
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| James Cheshire collection |
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| James Cheshire collection |
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| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
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| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
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| R&M 72:4 pp 252-264 |
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| Paris, Travis A. (2011) Tennessee Mineral Locality Index. Rocks & Minerals, 86 (4) 300-329 doi:10.1080/00357529.2010.517132 |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
Hoover Point Lookout, Burnet County, Texas, USA