| Rocks and Minerals, (2001) 76:257 Ross, Malcolm, Flohr, Marta J. K., Ross, Daphne R. (1992) Crystalline solution series and order-disorder within the natrolite mineral group. American Mineralogist, 77 (7-8) 685-703 Rocks and Minerals, (1976) 51:495-507. Blade, Lawrence Vernon (1963) Geochemistry and petrology of the alkalic igneous complex at Magnet Cove, Arkansas. USGS Prof. Paper 425. Erickson, Ralph Leroy |
Diamond Jo Quarry, Magnet Cove, Hot Spring County, Arkansas, USA