| Basis for focus area |
Autenrieth (2012) mapped small "calciocarbonites" dikes and veins, that cross-cut the alkalic intrusions and most of which are enriched in Ba, Sr, Y, and Pb. From Autenrieth (2012), "...calcite in microfractures within the phonolite and replacement of phenocrysts by magmatic carbonate is common in the Rattlesnake Hills, evidence of possible carbonatites at depth (Stupak, 1984; Hoch and Frost, 1993). |
| Identified resources |
None. |
| Production |
None. |
| Status |
None. |
| Estimated resources |
Unknown. |
| Geologic maps |
Hausel (1996a), scale 1:24,000; Sutherland and Hausel (2003), scale 1:100,000; Sutherland and Hausel (2005a), scale 1:24,000; Autenrieth (2012), scale 1:12,000; Sutherland and others (2012), scale 1:24,000; Sutherland and Worman (2013), scale 1:24,000; Lynds and others (2016), scale 1:24,000. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Calciocarbonites" dikes and veins, that cross-cut the alkalic intrusions (Autenrieth, 2012). |
| Deposits |
Lucky. |
| Evidence from mineral occurrences |
None. |
| Geochemical evidence |
Autenrieth (2012) Table 7.1 indicates most of sampled carbonatites are enriched in Ba, Pb, Sr, and Y, with REE, Sc, and Zr also present. |
| Geophysical evidence |
No data. |
| Evidence from other sources |
No data. |
| Cover thickness and description |
Thick Neogene sedimentary cover in places. Numerous intrusions through entire Phanerozoic section. |
| Authors |
Ranie M. Lynds, Rachel N. Toner, Benjamin J. Drenth, Joshua M. Rosera. |
| New data needs |
Geophysics, mapping, and lidar. |
| Geologic mapping and modeling needs |
Two additional 1:24,000 scale maps with infill more detailed outcrop mapping. Subsurface modeling from geophysical surveys crucial. |
| Geophysical survey and modeling needs |
Rank 1 aeromagnetic and aeroradiometric data. |
| Digital elevation data needs |
Lidar complete in Wyoming. |
