Mineral Deposits of the Deep Creek Mountains, Tooele and Juab Counties, Utah by K. C. Thomson UTAH GEOLOGICAL AND MINERALOGICAL SURVEY affiliated with THE COLLEGE OF MINES AND MINERAL INDUSTRIES University of Utah, Salt Lake City, Utah BULLETIN 99 PRICE $4.50 JUNE 1973 CONTENTS Page Page Abstract .................................... 1 Alaskite Intrusives ....................... 9 Dike Rocks .............................. 9 Introduction ................................. 3 Porphyry Dikes ......................... 9 Previous Work .............................. 3 Rhyolite Dikes ......................... 9 Physical Geography ........................... 3 Aplite Dikes ........................... 9 Andesite Dikes ......................... 9 Mapping and Analytical Techniques .................. 3 Basalt Dikes ...........................9 Pegmatite Dikes ......................... 9 Location of Mining Areas and Properties .............. 4 Extrusive Rocks ........................... 9 Ignimbrite Sequence ...................... 9 General Geology .............................. .4 Andesite ............................... 9 Stratigraphy . 4 Rhyolite .............................. 9 Precambrian Rocks ........................ .4 Tuff ................................. 9 Trout Creek Sequence ................... .4 Other Extrusive Rocks .................... 9 Johnson Pass Sequence ....................5 Structure ................................. 10 Water Canyon Sequence ................... 5 Southern Qifton Block ..................... 10 Cambrian and Precambrian Rocks ............... 5 Willow Springs Block ...................... 10 Goshute Canyon Formation ................. 5 Spring Creek Block . 11 Lower Cambrian Rocks ...................... 5 Ibapah Stock ............................ 11 Prospect Mountain Quartzite ................ 5 Alteration ................................ 11 Pioche Shale ........................... 5 Silicification .............................. 11 Busby Quartzite ......................... 5 Sericitization .............................. 12 Middle Cambrian Rocks ..................... 6 Si!ication ................................. 12 Abercrombie Formation ................... 6 Young Peak Dolomite ..................... 6 Ore Deposits ................................ 13 Trippe Limestone ........................ 6 General Character and Oassification of Deposits ...... 13 Lamb Dolomite ......................... 6 Pegmatite Dikes . ..... 13 Hicks Formation ........................ 6 Hydrothermal Veins ....................... 13 Upper Cambrian and Lower Ordovician Rocks ...... 6 Hypothermal Veins ..................... 13 Chokecherry Dolomite .................... 6 Mesothermal Veins ...................... 13 Lower Ordovician Rocks ..................... 6 Epithermal Veins ....................... 13 Pogo nip Group ......................... 6 Bedding Replacement Bodies ................... 13 Middle Ordovician Rocks ..................... 7 Contact Metasomatic Deposits ................ 13 Eureka Quartzite . 7 Controls of Mineralization ..................... 13 Upper Ordovician Rocks ..................... 7 Fracture Systems ......................... 14 Fish Haven Dolomite ..................... 7 Stratigraphic Controls ...................... 14 Middle Silurian Rocks ....................... 7 Igneous Relationships ...................... 14 Laketown Dolomite ...................... 7 Extrusive Relationships ..................... 17 Lower Devonian Rocks ...................... 7 Ore Body Zoning ......................... 17 Sevy Dolomite .......................... 7 Alteration of Mineral Deposits .................. 17 Middle Devonian Rocks ...................... 7 Alteration of Pegmatite Dikes ................ 17 Simonson Dolomite ...................... 7 Alteration of Hydrothermal Veins .............. 18 Guilmette Formation ..................... 7 Hypothermal Veins ..................... 18 Upper Mississippian Rocks .................... 7 Mesothermal Veins ...................... 18 Woodman Formation ..................... 7 Epithermal Veins ....................... 18 Ochre Mountain Limestone ................. 7 Alteration of Bedding Replacement Deposits ...... 18 Chainman Shale . 7 Alteration of Contact Metasomatic Deposits ....... 18 Upper Mississippian and Lower Genesis of Original Ore Deposits ................. 18 Pennsylvanian Rocks ..................... 7 Summary, Practical Applications and Manning Canyon Formation ................. 7 Future of the Area ........................ 19 Lower and Middle Pennsylvanian Rocks ........... 7 Ely Formation .......................... 7 Pennsylvanian and Permian Rocks ............... 7 Mines and Prospects ........................... 20 Oquirrh Formation ....................... 7 Sou them Oifton Area . 20 Lower Permian Rocks . 7 Monocco Property ........................ 20 Arcturus Formation ...................... 7 Prospects in Pony Express Canyon ............. 23 Tertiary Rocks ............................ 7 Iron Blowout ......................... 23 Salt Lake Group ........................ 7 Complex Property ...................... 23 Quaternary Sediments ....................... 8 Silver Queen Oaim . 23 Older Alluvium ......................... 8 Overland Canyon Properties .................. 23 Alluvium ............................. 8 Overland and Gold Star Oaims ............. 23 Igneous Rocks .............................. 8 Midland Qaims . 24 Intrusive Rocks ........................... 8 Cyclone and Leap Year Oaims .............. 25 Gold Hill Stock ......................... 8 Laura Claim .......................... 27 Ibapah Stock ........................... 8 Bonanza Group ........................ 27 ii CONTENTS (continued) Page Page Monte del Rey Property .................. 27 15. Geology and workings of the Midnight adit Fortuna Group ........................ 28 on the Midland property in Overland Canyon ...... 25 Proberts Property ....................... 28 16. Geology and workings of the 20Q-foot inclined Midas Property ........................ 28 adit on the Midland property in Overland Canyon ... 25 Utah Oaim ........................... 29 17. Geology and workings of the Cyclone mine Willow Spring Area .......................... 29 in Overland Canyon ........................ 26 Dewey Properties ......................... 29 18. Geology and workings of the Laura adit in North Pass Area .......................... 29 Overland Canyon ......................... 27 Congar Hill Property ....................... 31 19. Geology and workings of the Midas mine in Willow Springs Area . 31 Overland Canyon ......................... 29 Reilly-Goshute Canyons Area ................. 35 20. Geology and workings of the North Pass area ...... 30 Prosperity Property ..................... 3 7 21. Location of claims in the North Pass area ......... 31 Devils Pit-Oro del Rey-Eagles Nest Area ....... 37 22. Geologic map of the Congar Hill area ............ 31 Lower Goshute Canyon Property ............ 38 23. Geologic map and section of the Congar Hill mine ... 32 Silver Queen Property .................... 38 24. Geology and claims in the Willow Springs area, Production ........................... 40 Willow Springs district ...................... 33 Spring Creek Area .......................... 40 25. Geology and workings in plan and section Gold Bond Property ....................... 40 of the Roy mine, Willow Springs area ........... 34 Red Hill Mine ........................... 48 26. Geology and workings of mines in the Trout Creek Properties ..................... 50 Willow Springs area ........................ 36 Apex Property, Mary Oaim and Vicinity ....... 51 27. Diagrammatic geologic section showing Trout Creek Mine and Vicinity ............. 51 stratigraphic relations of mine workings Trout Creek Canyon Prospects .............. 51 in the Reilly-Goshute canyons area ............. 37 Hornet Mine, MacMillan Property and 28. Geology and workings of the Prosperity mine, Eastern Trout Creek Mine ................. 51 Reilly-Goshute canyons area .................. 39 Production ........................... 56 29. Geologic plan and section of the Eagles Nest inclined Singleton Canyon Area ..................... 57 shaft, Reilly-Goshute canyons area .............. 40 Heavenly Hills Prospects .................... 57 30. Geologic map and sample data of the Oro del Rey Water Canyon Mine ....................... 59 mine, Reilly-Goshute canyons area .............. 41 Johnson Canyon Properties .................. 62 31. Plan and section of the Oro del Rey mine, Queen of Sheba and Jumbo Properties .......... 66 Reilly-Goshute canyons area .................. 42 32. West-east geologic sections facing north of the References .................................. 70 Oro del Rey mine vein system ................ 43 33. Geology and workings in plan and section of the Appendix Devils Pit mines, Reilly-Goshute canyons area ...... 44 Logs of holes drilled by Western Beryllium Co. 34. Geology and workings of the Bueno mine, on the Apex Tungsten property ................... 73 Reilly-Goshute canyons area .................. 45 35. Geology and workings in plan and section of the lower Goshute Canyon mines, Reilly-Goshute canyons area ............................ 45 ILLUSTRATIONS 36. Geologic map of the Silver Queen area, Reilly-Goshute canyons area .................. 46 Figure 37. Geologic map of the Gold Bond property I. Index map of the location of the study area ........ 2 in Granite Canyon showing the location of 2. Stratigraphic section in the