| Basis for focus area |
Outline of Box Elder district from Krahulec (2018b). |
| Identified resources |
Historical production of antimony. |
| Production |
1000 tons of Sb ore, minor polymetallic production. |
| Status |
Past mining. |
| Estimated resources |
Unknown. |
| Geologic maps |
Jensen and King (1999), scale 1:24,000; King (2018), scale 1:24,000. |
| Geophysical data |
Rank 2 aeromagnetic coverage (Langenheim, 2016); inadequate radiometric coverage. |
| Favorable rocks and structures |
Cambrian carbonates of the Blacksmith and Nounan Formations., Ordovician carbonates of the Garden City Formation. |
| Deposits |
Dry Lake Antimony mine (MRDS dep_id: 10088336), Baker mine (MRDS dep_id: 10098011, Cu-Pb-Ag), Copper Blossom mine (MRDS dep_id: 10015667, Cu-Pb-Zn-Ag). |
| Evidence from mineral occurrences |
MRDS; UMOS (Utah Geological Survey, 2021). |
| Geochemical evidence |
Antimony ore contains trace amounts of Cu, Pb, As, Ag, and Au. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
See Krahulec (2018b), Mills and Rupke (2020). |
| Comments |
Dry Lake appears to have been the result of basin movement during the Sevier orogeny, based on its setting (faulted carbonate rock) and associated Pb-Zn and Cu mineralization, somewhat like upper Mississippi Valley deposits. No known intrusions; previous porphyry-related models based on mis-identification of metamorphosed Proterozoic rocks (exposed in Box Elder Canyon and in the subsurface in geothermal wells) as metamorphosed Paleozoic rocks. |
| Cover thickness and description |
No cover. |
| Authors |
Albert H. Hofstra. |
| New data needs |
None requested at this time. |
| Geologic mapping and modeling needs |
None requested at this time. |
| Geophysical survey and modeling needs |
None requested at this time. |
| Digital elevation data needs |
Lidar complete. |
