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USA | |
| USGS National Geochemical Database : Rocks , File W257472 and W258950 - W258951 |
| USGS National Geochemical Database :Rocks - File W257441 |
| Blade, Lawrence Vernon (1963) Geochemistry and petrology of the alkalic igneous complex at Magnet Cove, Arkansas. USGS Prof. Paper 425 Erickson, Ralph Leroy |
| Stroud, et al (1969). Miser, H. D., & Ross, C. S. (1923). Diamond-bearing peridotite in Pike County, Arkansas. USGS Bulletin 735i. Rocks & Min.:63:115 |
| Dummett, H. T. (1987). Geology and petrography of the Twin Knobs# 1 lamproite, Pike County, Arkansas. Mantle Metasomatism and Alkaline Magmatism, 215, 205. |
| USGS National Geochemical Database :Rocks - File W257463 |
| USGS National Geochemical Database :Rocks - File W257494 and W258378 |