|
USA | |
| Ostrander, C. W. & W. E. Price Jr. (1940) Minerals of Maryland: Natural History Society of Maryland, 92 p. |
| Bernstein, Lawrence (1976) Minerals of Washington D.C. and vicinity: U.S. Geological Survey: Open File Report 76-849, 183 pp. |
| Beard, R. (2015) Rockhounding Delaware, Maryland, and the Washington, DC Metro Area. Chapter 33: 125-126 |
| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
| Minerals of maryland (1940) Ostrander & Price, JR. |
| Stuart Herring |
| 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. |
| Specimens in collection |
| Stuart Herring |
Owings Mills, Baltimore County, Maryland, USA