|
USA | |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Johnson, Eben Lennart (1955), Geology of the pegmatites in the Hale Spring area, Wichita Mountains, Oklahoma, University of Oklahoma MS thesis, 87 pages. |
| Huang, Walter T. (1957), Titanclinohumite from the Wichita Mountains, Oklahoma. American Mineralogist: 42: 686-688. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |