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USA | |
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| Lininger, Jay (1994) The minerals of Frostburg: Matrix: 3: 108-111. |
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| Jat Thompson Collection |
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| Jat Thompson Collection |
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| Jat Thompson Collection |
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| Jat Thompson Collection |
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| Barwick, Authur R. (1951) Vivianite Concretions in Aquia Formation (Middle Eocene), Anne Arundel County, Maryland, American Mineralogist, 36: 629--630. |
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| Jat Thompson Collection |
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| A.Mathauser collection
A Mathauser collection |
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| Personally Collected by Stuart Herring |
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| Personally Collected by Stuart Herring |
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| Mineral Hill specimen #764, to Trimingham collection # T-446. |
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| Stuart Herring |
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| Personally Collected by Stuart Herring |
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| A.Mathauser collection |
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| Stuart Herring |
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| Collection of Stuart Herring |
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| Jat Thompson |
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| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
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| Stuart Herring |
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| Jat Thompson Collection |
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| Mines of the Washington D.C Area |
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| Jat Thompson Collection |
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| Paul P.Hearn,Jr.,Lucy McCartan,david R. Soller, M.Dennis Krohn,and Virginia M.Gonzalez (1988) Cacoxenite in Miocene Sediments of the Maryland Coastal Plain:Clay and Clay Minerals , Vol.36,No.5,419-424,1988 |
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| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
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| Mines of the Washington D.C Area |
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| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
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| Jat Thompson Collection |
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| Jat Thompson Collection |
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| Nagy,J. & F. J. Parker (2013) The Maryland Mine: Maryland's last underground gold mine: Rocks and Minerals: 88 (5): 448-460 |
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| Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446 |
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| O.P. Bricker,W.L. Newell, and N.S. Simon (2004) Bog Iron Formation in the Nassawango Watershed, Maryland : USGS |
Oregon Ore Banks, Oregon Ridge Park, Cockeysville, Baltimore County, Maryland, USA