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USA | |
| [var. Chromium-bearing Titanite] Murdoch, Joseph, Webb, Robert W. (1966) Minerals of California, Centennial Volume (1866-1966) - California Division Mines and Geology, Bulletin 189. p.1-559. Jaffe, Howard W. (1947) Reexamination of sphene (titanite) American Mineralogist, 32 (11-12) 637-642 |
| Bird, D.K., Schiffman, P., Elders, W.A., Williams, A.E., McDowell, S.D. (1984) Calc-silicate mineralization in active geothermal systems. Economic Geology: 79(4): 671–695. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Econ Geol (1984) 79:671-695 |
| Econ Geol (1988) 83:511-523 |