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USA | |
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| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland, page 45 |
|
| Heyl, A. & Pearre, N (1965) Copper, zinc, lead, iron cobalt and barite deposits of the Piedmont Upland in Maryland: Maryland Geological Survey: Bulletin 28, 72 p. |
|
| Heyl, A. & Pearre, N (1965) Copper, zinc, lead, iron cobalt and barite deposits of the Piedmont Upland in Maryland: Maryland Geological Survey: Bulletin 28: 55-56. |
|
| Jat Thompson Collection |
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| Kearns, C.A. & J.A. Nord (2016) Garnets in the Henryton pegmatite, Carroll County, Maryland: Rocks and Minerals: 91 (4): 369. |
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| Stuart Herring |
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| USGS Bulletin |
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| Econ Geol (1989) 84:663-675
Mines of the Washington D.C Area |
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| Stuart Herring |
|
| Rocks & Min.: 22:1023. |
|
| Jat Thompson Collection |
|
| Stuart Herring |
|
| Heyl, A. & Pearre, N (1965) Copper, zinc, lead, iron cobalt and barite deposits of the Piedmont Upland in Maryland: Maryland Geological Survey: Bulletin 28, 72 p. |
|
| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
|
| Econ Geol (1989) 84:663-675
MD Geol. Sur.:Vol. IX (1911):310. |
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| Maryland Geol. Sur., Vol. IX: 309-310 |
|
| Stuart Herring |
|
| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
Henryton Pegmatite prospect, Henryton, Carroll County, Maryland, USA