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USA | |
| [var. Smoky Quartz] Camilla K. McCauley (1964) Gem Stone Resources of South Carolina : South Carolina Division of Geology Bulletin No.30 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Griffitts,Wallace R. and Olson,Jerry C. (1953) Mica Deposits of the Southeastern Piedmont : Part 7 and Part 8:USGS Paper 248-E |
| "Duncan McDermott' Collection" |
| Watson, T.L. (1910) Granites of the Southeastern Atlantic States. United States Geological Survey, Bulletin 426, 282 pages. |
| Griffitts, Wallace R. and Olson, Jerry C. (1953) Mica Deposits of the Southeastern Piedmont -Part 7 and Part 8 USGS Paper 248-E |
| Earle Sloan (1908) Mineral Localities of South Carolina :South Carolina Geological Survey Bulletin No.2 |
| Griffitts,Wallace R. and Olson,Jerry C. (1953) Mica Deposits of the Southeastern Piedmont : Part 7 and Part 8:USGS Paper 248-E |
Horsepen Creek, Greenville County, South Carolina, USA