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USA | |
| www.koeln.netsurf.de/~w.steffens/usa.htm. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Raiter, E. et al (2002) 29th Rochester Mineralogical Symposium, Abstracts of contributed papers, 15. csmres.jmu.edu (n.d.) http://csmres.jmu.edu/geollab/baedke/dept/abs2002.pdf. Rocks & Minerals 84:352-362. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Johnson, R. W., Jr., Milton, C., and Dennison, J. M., 1971 |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Patrick E. Haynes (2012) Zeolites and associated minerals from Sugar Grove, Pendelton County, West Virginia. New Mexico Mineral Symposium November 10-11, 2012 Abstracts pp 19-20 Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc., Phoenix, Arizona. 567pp. Rocks & Minerals 68:167 |
Sugar Grove Basalt, Pendleton County, West Virginia, USA