|
USA | |
|
| Lininger, Jay (1994) The minerals of Frostburg: Matrix: 3: 108-111. |
|
| Ostrander, C. W. & W. E. Price Jr. (1940) Minerals of Maryland: Natural History Society of Maryland, 92 p. |
|
| Minerals of the Washington D.C. area |
|
| Collection of Stuart Herring |
|
| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland, page 45 |
|
| J. Wingard, personal observation 5/1/04 |
|
| 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. |
|
| Jat Thompson Collection |
|
| Maryland, its resources, industries and institutions By Maryland. Board of World's Fair (1893)
Dana 6:910,1030,1071.
Rocks & Min.: 22:1023. |
|
| 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. |
|
| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
|
| Mines of the Washington D.C Area |
|
| 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. |
|
| Minerals of the Washington D.C. area |
|
| Weed, W.H., (1905) Notes on the gold veins near Great Falls, Maryland : U.S. Geol. Survey Bull. 260, p. 128-131.
Rocks &Min.: 14:301
22:834. |
|
| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
|
| Parker, Fred J. (2005) The minerals of the Hunting Hill quarry, Rockville, Maryland. The Mineralogical Record, 36 (5) 435-446 |
|
| Ref: Minerals of the Washington, D.C Area. |
