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USA | |
- Bradshaw Mountains (Bradshaw Range)
| The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick Hamilton (1881), Scottsdale, AZ: 54. |
| Brobst, D. A. (1958) Barite resources of the United States. Bulletin Vol. 1072B. US Geological Survey doi:10.3133/b1072b Anderson, C.A. & S.C. Creasey (1958), Geology and ore deposits of the Jerome area, Yavapai Co., AZ, USGS PP 308: 170. Lindgren, W. (1926), USGS Bull. 782: 128-129 |
| The History of Arizona, Chap. X: 104-105. |
- Groom Creek Mining District
| The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick Hamilton (1881), Prescott, AZ: 55. |
| Wilson, E.D., et al (1934), Arizona Bureau of Mines Bull. 137: 60-61. |
| Brian Beck Collected, Univ. of Arizona XRF |
| The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick Hamilton (1881), Scottsdale, AZ: 49. |
| Brian Beck collected, Attard analysis XRF and Microprobe |