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USA | |
|
| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland, 27p. |
|
| Ref: Minerals of the Washington, D.C Area. |
|
| Jat Thompson Collection |
|
| Mineralogical Record Vol 12 #3 May/June 1981 pp149-156 |
|
| Pearre, N. C., Van Heyl, A. (1960) Chromite and other mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania, and Delaware. Bulletin Vol. 1082 (1082k) US Geological Survey doi:10.3133/b1082k |
- Jarretsville-Dublin Mining District
| Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. |
|
| Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. area. Maryland Geological Survey Educational Series 5, 148 pages.
and Christ (1968) indicated that chrysotile and other serpentine min-
'Serpentinite and Rodingite in the Hunting Hill Quarry, Montgomery County, Maryland', Geological Survey Bulletin 1283, p.20
"Clinochrysotile forms veins 1/8 to 2 inches thick in serpentinite
the
largest vein strikes N. 50° W. and dips '25° NE. The mineral is ex-
tremely fine grained, pale grayish green to bluish green, massive,
waxy, and has an unctuous feel
it is hard and breaks with a conchoi-
dal fracture. The outer surfaces or contacts of the thickest vein are |
|
| Jat Thompson Collection |
Lord Baltimore Drive Quartz occurrence area, Windsor Mill, Baltimore County, Maryland, USA