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USA | |
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| Dana 6:1070
Rocks & Min.:10:110. |
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| Ostrander, C. W. & W. E. Price Jr. (1940) Minerals of Maryland: Natural History Society of Maryland, 92 p. |
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| Rocks & Min.:11:111. |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
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| Roswell Miller III (1945) The heavy minerals of Florida beach and dune sands. American Mineralogist, 30, 65-75. |
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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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| 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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| (2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey. |
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| W. Harold Tomlinson (1946) Rutile in Harford County, Maryland. American Mineralogist, 31, 322-325. |
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| Cameron holden’s |
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| Minerals of the Washington, D.C. Area |
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| Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446 |
Howard County, Maryland, USA