Bronco Creek Exploration Inc. a wholly owned subsidiary of
EMX Royalty Corporation (NYSE MKT:EMX, TSX-V:E
MX)

Projects 

  Aguila de Cobre, Arizona

Target Commodity: Cu(-Mo)

Partnership Status: Kennecott Exploration Company Option Agreement

Property Location: ~120 kilometers west of Phoenix, in Central Arizona


Exposed structural blocks of altered intrusive rocks with anomalous base metal and Mo geochemical signatures occur on the property


Target areas are located under a thin veneer of post-mineral pediment adjacent to the altered intrusive rocks

 

         Surface observations suggest there are two discrete porphyry systems, based on the >20 Km2 footprint of outcropping porphyry style alteration

 

         Preserved supracrustal rocks in the range indicate a minimum of 70 degrees of southwest tilt has been superimposed on the porphyry system

 

        Historic drilling intersected sericitized porphyry dikes and host rocks with up to 5-7 vol% pyrite beneath shallow (<80 meters) pediment.visible Cu-oxide mineralization is present in drill cuttings surrounding the collars. The historic drill holes were all shallow, designed to test for the limits of the alteration footprint of the southern system. Both systems remain open in all directions.


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 Buckhorn Creek, Arizona
 

Target Commodity: Cu(-Mo)

Partnership Status: Wholly owner by BCE and available for partnership

Land Position: ~1,608 hectares (~3,973 acres); 169 U.S. unpatented lode mining claims and 1 Arizona State Exploration Permit

Property Location: Buckhorn Mountains, northeast of Wickenburg, Yavapai County, Arizona
 

         Buckhorn Creek targets a tilted Cu (-Mo) porphyry center beneath post-mineral cover rocks

 

         BCE has recognized evidence for a 65º NE tilting in Tertiary synextensional sediments

 

         Systematic deep to shallower exposures of Proterozoic host rocks NE and SW of the target area contain extensive hydrothermal alteration and locally intense quartz-(Cu-Mo) veins increasing in intensity towards the target

Post mineral gravels contain clasts of sericitically-altered and veined, Cu-bearing porphyry on the property, with the potential for supergene chalcocite development (similar to Sheep Mountain East, located ~2km east)


        Contact David Johnson For More Information                                                                  Top of Page   

 


 Cathedral Well, Nevada

Target Commodity: Au

Partnership Status: Ely Gold and Minerals Inc Option Agreement

Land Position: ~822 hectares (~2,031 acres); 114 U.S. unpatented lode mining claims

Property Location: Green Springs district of southwestern White Pine County, Nevada (~60 km southwest of Ely), straddling the western flank of the White Pine Range and adjacent Railroad Valley

 

         Carlin-Style gold mineralization developed in higher grade feeder structures and disseminated at favorable stratigraphic horizons

 

          Located in region characterized by numerous jasperoid occurrences and past-producing gold mines — including Green Springs, Illipah, Alligator Ridge, EZ Junior and Pan prospect — regarded to be the southern culmination of the Battle Mountain-Eureka trend

 

          Geologic mapping and structural reinterpretations have highlighted structurally offset portions of known mineralization from the historic Green Springs gold mine.

BCE has completed a CSAMT survey on the project and an initial RC drilling program consisting of 6 holes totaling ~1,500 meters (~4,900 feet)

The Company's geologic mapping and structural reinterpretations have highlighted structurally offset portions of known mineralization

Outcropping jasperoid with anomalous pathfinder elements at high structural levels has focused historic exploration on the upper stratigraphic sequence. The Company has recognized the potential for mineralization within the structurally deeper, Pilot shale-Guilmette limestone contact on the eastern side of the property (important ore host at Alligator Ridge)
 

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 Copper Basin, Arizona

Target Commodity: Cu(-Mo)

Partnership Status: Wholly owned by BCE and available for partnership

Land Position: >1,787 Ha (~4,415 acres); 226 U.S. unpatented lode mining claims and 1 Arizona Mineral Exploration Permit

Property Location: Yavapai County, Arizona, 80 Km north of Phoenix in the Bradshaw Mountains

 

      Large porphyry copper-molybdenum system containing several previously undrill-tested hypogene targets.


      Quartz-pyrite-chalcopyrite-molybdenite veins and stockwork cut Laramide-aged quartz diorite dikes and stocks emplaced into Precambrian granites in multiple drainages within a central interior block.

      Synthesis of new geologic data suggest that shallower structural levels, where higher hypogene grades might be expected, should be preserved under less altered rocks to the east where several copper seeps are observed originating from weakly altered rocks.

      A ZTEM and aeromagnetic survey was flown on the property in late 2011 and highlighted several concealed target areas located outside the area of historic drilling.

      Detailed surface mapping in late 2011 and early 2012 expanded the area of historic focus by nearly 200% and identified multiple new and untested mineralized hydrothermal breccias.


      The Company has identified several new targets that were the focus of the initial 2013 diamond drill program.  The holes collared in the porphyry system, and six of the seven drill holes bottomed in visible copper-molybdenum mineralization.  Hole CB-13-01 was altered and mineralized over its entire 919.7 meter length, and averaged 0.34% copper equivalent (0.18% Cu and 0.029% Mo), with higher grade sub-intervals of 104.5 meters averaging 0.43% copper equivalent (0.21% Cu and 0.039% Mo) and 63 meters averaging 0.65% copper equivalent (0.16% Cu and 0.090% Mo).  Note: Cu equivalent calculated with a 5.5 Mo:Cu ratio and assumes that metallurgical recoveries and net smelter returns are 100%.  Reported intercepts are interpreted as true widths in porphyry style mineralization.

       BCE’s exploration programs at Copper Basin have established that the system consists of multiple nested pulses of porphyry-style alteration and mineralization with at least one kilometer of vertical extent and exposed over a 1.5 square kilometer target area.

      There are additional upside exploration targets that lie beneath less altered cover rocks peripheral to the exposed portion of the porphyry system.

       BCE is currently planning to follow-up on the encouraging 2013 drill results with a second phase program of exploration.


        Contact David Johnson For More Information                                                                  Top of Page   


                                     

 

 Copper King, Arizona

Target Commodity: Cu

Partnership Status: Desert Star Resources Ltd. Option Agreement 

Land Position: ~1,438 hectares (~3,555 acres); 189 U.S. unpatented lode mining claims

Property Location: Pioneer Mining District; Pinal County, Arizona 

 

         Located about four kilometers north of the Resolution copper deposit


         Large area of exposed alteration and mineralization within exposed carbonate rocks

Numerous, variably altered porphyry dikes are observed across the property

Alteration assemblages are similar to those zoned within 200-500 meters of the 1% copper shell at Resolution (McCarrel, 2012)

 

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 Copper Springs, Arizona

Target Commodity: Cu(-Mo)

Partnership Status: Wholly owned by BCE and available or partnership

Land Position: >2,163 Ha (>5,345 acres); 253 U.S. unpatented lode mining claims and 1 Arizona Mineral Exploration Permit

Property Location: Globe-Miami mining district; Gila County, Arizona, northeast of Pinal Mountains

 

         Supergene and hypogene porphyry copper-molybdenum mineralization targets in south-central portion of world-class multi-porphyry-center Globe-Miami mining district

 

         Tertiary faults have dramatically dismembered and extended district — a cluster of large porphyry Cu(-Mo) systems centered on a Laramide-age granitic pluton

 

         Fault-bound deposit pieces include: Pinto Valley, Cactus-Carlotta, Copper Cities, Miami-Inspiration, and Old Dominion (BHP, Quadra, Freeport-McMoRan, others)

 

         Approximately 60% of district remains covered by post-mineral sedimentary and volcanic rocks

 

         Multi-year district-scale structural reconstruction by BCE geologists has resulted in new understanding of district’s mineralizing systems, structure, and the location of several yet-undiscovered portions of the porphyry centers hidden beneath post-mineral cover rocks

 

        Copper Springs target is fault-displaced middle-to-upper portion of large productive porphyry center

 

        Drill sites selected to test target area, and first-stage drill test permitting complete

 

        BHP Billiton is currently conducting exploration drilling adjacent to the northern and northeastern flanks of the project area (Arizona Silver Belt News, June 26, 2013)

 
       See also Jasper Canyon project description


        Contact David Johnson For More Information                                                                  Top of Page
 

 

 French Bullion, Nevada 

Target Commodity: Au

Partnership Status: Wholly owned by BCE and available for partnership

Land Position: ~572 hectares (~1,414 acres); 82 U.S. unpatented lode mining claims

Property Location: Butte Valley, northwest of Ely, White Pine County, Nevada
 

         Target is stratigraphically-controlled Carlin-style gold with potential for high grade feeder zones

 

         Carlin style alteration extends over several kilometers of strike length

         Extensive jasperoid developed at multiple stratigraphic contacts

Anomalous gold in jasperoid at the Pilot-Guilmette and Chainman-Joana contacts

17 historic drill holes: Intersected anomalous gold

BCE has identified new untested targets underneath pediment cover

Potential "off-trend" district-scale target

        Contact David Johnson For More Information                                                                  Top of Page
      

 



 Hardshell Skarn, Arizona

Target Commodity: Cu-Au-Ag

Partnership Status: Arizona Minerals Option Agreement

Land Position: ~112 Ha (~278 acres); 16 U.S. unpatented lode mining claims

Property Location: Sunnyside area; Santa Cruz County, Arizona; Patagonia Mountains

 

          High-grade copper-gold-silver skarn target located in historic mining district between Sunnyside porphyry copper system and Hardshell silver-copper-manganese replacement deposit (both with historic mineral resources defined by Asarco in 1970’s exploration)

 

          Historic high-grade drill intercepts of polymetallic skarn in Paleozoic carbonate rocks along BCE property boundary

 

          Significant thicknesses of silicified and altered Paleozoic carbonate section outcropping on BCE property, with series of faults stepping the unit up across BCE ground and presenting opportunity to test multiple prospective stratigraphic levels

 

          BCE geochemical and structural interpretation defines property as key intermediate piece between drill-defined deep skarn environment and the shallow, distal styles of mineralization represented by Hardshell

 

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 Jasper Canyon, Arizona

Target Commodity: Cu(-Mo)

Partnership Status: Wholly owned by BCE and available for partnership

Land Position: ~1,297 Ha (~3,205 acres); 171 U.S. unpatented lode mining claims

Property Location: Globe-Miami mining district; Gila County, Arizona, northwest end of Globe Hills

 

         Supergene and hypogene porphyry copper-molybdenum mineralization targets in northeast portion of world-class multi-porphyry-center Globe-Miami mining district

 

        Tertiary faults have dramatically dismembered and extended district — a cluster of large porphyry Cu(-Mo) systems centered on a Laramide-age granitic pluton

 

         Fault-bound deposit pieces include: Pinto Valley, Cactus-Carlotta, Copper Cities, Miami-Inspiration, and Old Dominion (BHP, Quadra, Freeport-McMoRan, others)

 

         Approximately 60% of district remains covered by post-mineral sedimentary and volcanic rocks

 

        Multi-year district-scale structural reconstruction by BCE geologists has resulted in new understanding of district’s mineralizing systems, structure, and the location of several yet-undiscovered portions of the porphyry centers hidden beneath post-mineral cover rocks

 

         Jasper Canyon targets are fault-displaced upper portion of productive porphyry center

 

         Adjacent drill hole demonstrates BCE interpretation of shallow cover with porphyry related mineralization at depth

 

         See also Copper Springs project description

 


        Contact David Johnson For More Information                                                                  Top of Page   

 


 

 Lomitas Negras, Arizona

Target Commodity: Cu

Partnership Status: Wholly owned by BCE and available for partnership

Land Position: >7,190 hectares (>17,768 acres); 91 U.S. unpatented lode mining claims and 25 Arizona Exploration leases

Property Location: South of San Manuel, ~25 kilometers south of the San Manuel Mine, Pinal County, Arizona 

 

         The Lomitas Negras Property is located ~ 15 kilometers south of BHPB's San Manuel mine 

 

          Regionally, rocks are tilted to the east on multiple sets of down-to-the-west normal faults. The post-mineral extension has resulted in approximately 70º of rotation, recorded by the oldest Tertiary synextensional conglomerates and volcanic rocks 

 

          Regional geologic relationship suggest the local structure is complex and there are likely multiple larger displacement faults present that are hidden under the alluvial cover

Three target areas defined based on coincident anomalies defined by airborne magnetic and ZTEM geophysics, soil gas hydrocarbon geochemical surveys, and structural reconstructions

BCE has pre-collared 3 drill holes with a total of 32 permitted drill sites to provide a flexible drill test of the property

  
Contact David Johnson For More Information                                                                  Top of Page    

 


 Mesa Well, Arizona

Target Commodity: Cu(-Mo)

Partnership Status: Wholly owned by BCE and available for partnership

Land Position: ~728 Ha (~1,800 acres); 3 Arizona Exploration Permits

Property Location: South of Klondike district; Graham County, Arizona; Pinaleño Mountains western flank

 

          Property lies along regional trend of porphyry copper mineralization extending from Safford district (Freeport-McMoRan) to San Manuel district (BHP-Billiton)

 

          Project is near the Klondike district, a past producer of copper, lead and zinc mineralization from skarn and replacement deposits in limestones and porphyry-like occurrences

 

         Tertiary faults identified across the area have dismembered and extended a Laramide-aged intrusive complex, exposing a dike swarm adjacent to BCE property, tilting young sedimentary rocks to steep angles, and offsetting the deeper portion of system to area beneath BCE property position along a low-angle fault

 

         Drilling has intersected porphyry-related alteration and quartz (-Cu-Mo) veins, increasing in intensity to the north

 

          BCE has permitted 20 additional drill sites to provide a flexible drill test of the target

 

          Contact David Johnson For More Information                                                                  Top of Page

 


 

 Mineral Hill, Wyoming

Target Commodity: Cu-Au-Ag

Partnership Status: Wholly owned by BCE and available for partnership

Land Position: ~623 Ha (~1,540 acres); 67 U.S. unpatented lode mining claims (additional claims subject to pooling agreement with neighboring claimant not included)

Property Location: Mineral Hill/Hurricane gold mining district; Black Hills; Crook County, Wyoming

 

         Located 25 km west of the Homestake Mine, and 20km west of Goldcorp's operating Wharf Mine

 

        Targets include epithermal-style gold and porphyry-style copper-gold mineralization associated with an Eocene-aged alkaline igneous complex

 

       District mineralization provides evidence for multiple magmatic events, including the emplacement of a prominent central breccia pip

 

        Intense hydrothermal alteration developed in portions of the igneous complex along with gold-bearing quartz veins

 

         Placer gold deposits broadly developed in and around the Mineral Hill intrusive complex, and many historic lode mines and prospects are distributed throughout the district

 

         BCE's geochemical and geophysical data set includes: BLEG stream sediment samples, rock chip samples, a multi-element soil survey, and IP survey, and a historic magnetic survey

Drilling by BCE has intercepted porphyry-style copper-gold mineralization in an area of stockwork K-silicate and quartz-sulfide veins

 

        Contact David Johnson For More Information                                                                  Top of Page


 

Parks Salyer, Arizona 

Target Commodity: Cu (-Mo)

Partnership Status: Wholly owned by BCE and available for partnership

Land Position: >60 Ha (>150 acres); one exploration permit

Property Location: Sacaton-Casa Grande area; Pinal County, Arizona

       Property covers part of a historic porphyry copper resource drill tested by Asarco in central Arizona.  BCE is targeting the potential for in-situ leach ore opportunities for chalcocite and copper-oxides and open pit minable sulfide ores.

    
        Contact David Johnson For More Information                                                                  Top of Page



 Red Top, Arizona

Target Commodity: Cu

Partnership Status: Desert Star Resources Ltd. Option Agreement 

Land Position: ~1,463 Hectares (~3,617 acres); 192 U.S. unpatented lode mining claims

Property Location: Pioneer Mining District; Pinal County, Arizona, approximately 5 miles west of Superior 

 

         Located eight kilometers north-northwest of the Resolution deposit in the Superior Mining District

 

         Red Top exhibits porphyry style alteration across a broad area, with locally intense alteration spanning several hundred meters and associated with anomalous base metals mineralization

 

         Alteration assemblages analogous to those associated with mineralization at Resolution (Manske, 2002)

 

         BCE has interpreted the location of deeper levels and more prospective portions of the porphyry copper system to lie beneath gravel cover rocks on the BCE land position

 

         BCE interprets the altered and mineralized surface exposures as the upper portion moderately tilted porphyry system

 

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      Richmond Mountain, Nevada

      Target Commodity: Au+base metals

      Partnership Status: Wholly owned by BCE and available for partnership

      Land Position: >950 Ha (>2,300 acres); 117 U.S. unpatented lode mining claims

      Property Location: Eureka mining district; southeastern Eureka County, Nevada

       

             Two styles of mineralization dominant in the district: 1) polymetallic (±gold) system(s) developed in skarn and replacement bodies adjacent to early Cretaceous igneous intrusions, and 2) younger Carlin-style mineralization that overprints the older polymetallic mineralization

       

              The Company conducted a CSAMT survey and a reconnaissance drill program consisting of ~840 meters (~2,740 feet)

       

            Superposition of hydrothermal features such as iron-rich skarns and Pb-Zn-Ag-Au mineralization surrounding the Graveyard Flats intrusion provide effective chemical traps for higher-grade gold mineralization in Carlin-type fluids (similar to Archimedes, located ~1.5km east)


                 Contact David Johnson For More Information                                                                  Top of Page

       


       

       Silver Bell West, Arizona

      Target Commodity: Cu

      Partnership Status: Wholly owned by BCE and available for partnership

      Land Position: > 1,400 Ha (3,600 acres); 186 U.S. unpatented lode mining claims

      Property Location: Silver Bell mining district; Silver Bell Mountains, approximately 30 miles northwest of Tucson, Arizona

       

               Property immediately adjacent to operating Silver Bell Mine multiple stratigraphic units favorable for development of skarn mineralization and porphyry-style copper mineralization are recognized within the BCE land position, where a series of normal faults have down-dropped target rocks and lie beneath younger cover

       

            BCE is currently targeting two areas for exploration:

      (1)   Paleozoic carbonate units likely to host copper-rich skarn mineralization that underlie outcrops of copper-mineralized Laramide intrusive rocks and copper-gold mineralized Mesozoic sedimentary rocks in the contact aureole

      (2)   Trends of porphyry copper and skarn mineralization that project beneath cover rocks

       

              Ten drill sites in have been permitted, and first-round drilling is scheduled to begin in 2009

       

                    Contact David Johnson For More Information                                                                  Top of Page

       


       

       Sleeping Beauty, Arizona

      Target Commodity: Cu (-Mo)

      Partnership Status: Wholly owned by BCE and available for partnerships

      Land Position: >1,300 Ha (>3,250 acres); 183 U.S. unpatented lode mining claims

      Property Location: Globe-Miami mining district

       

             Porphyry Copper Project in the Globe-Miami District of Central Arizona

      Target lies in the middle to upper structural levels of the Pinto Valley-Copper Cities porphyry copper trend


      East-Northeast-Striking Sleeping Beauty Fault (SBF) transected the porphyry center, down-dropping portion of the system to the north-northwest, including a portion of the deposit at the Copper Cities Mine 

       

            Targets include primary copper sulfides and supergene-enriched mineralization offset from the Copper Cities deposit in addition to to adjacent portion of the system

      Fault displaced targets may includes portions of the system in the transition between potassic and sericitic alteration.


               Contact David Johnson For More Information                                                                  Top of Page





       Superior West, Arizona

      Target Commodity: Cu (-Mo) (-Ag,-Au)

      Partnership Status: Kennecott Exploration Company Option Agreement

      Land Position: >5,100 Ha (~12,500 acres); 669 U.S. unpatented lode mining claims, and 14 additional adjacent claims (>280 acres) by option agreement

      Property Location: Pioneer mining district; Pinal County, Arizona, approximately three miles west of Superior and 50 miles east of Phoenix

       

                District is setting of the Magma Vein (a copper-silver-gold vein that produced 25 million tons of ore with >4% Cu), and the giant Resolution Copper deposit.

       

                BCE is targeting two styles mineralization at Superior West: (1) the faulted, displaced and concealed western extension of the Magma Vein, and (2), the yet-undiscovered porphyry copper system that served as the source for the Magma Vein

       

               Reinterpretation of district structure and mineral/metal zoning patterns by BCE geologists predict location of porphyry source beneath younger cover rocks on the BCE property position

       

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       Yerington, Nevada

      Target Commodity: Cu-Au-Ag

      Partnership Status: Entrée Gold Inc. joint-venture agreement

      Land Position: > 1,700 Ha (>4,300 acres); 216 U.S. unpatented lode mining claims

      Property Location: Yerington district; Lyon County, Nevada

       

               Supergene and hypogene porphyry copper mineralization targets in southern portion of multi-porphyry-center Yerington mining district

       

               Tertiary faults have dramatically dismembered and extended district — a cluster of large porphyry Cu(-Mo) systems centered on a Jurassic-age granitic pluton

       

                Fault-bound deposit pieces include: past-producing Yerington and McArthur mines (Anaconda), and the undeveloped Bear-Lagomarsino and Ann Mason deposits

       

                Much of district remains covered by post-mineral sedimentary and volcanic rocks

       

               Extensive geologic work in the district by Anaconda geologists in the 1960’s, 70’s and 80’s produced highly-constrained structural and geologic models for the district, and these provide effective exploration tools and have helped illuminate additional targets for exploration

       

               Dike swarms and skarn deposits in southern part of Yerington district highlight presence of another, yet-undiscovered, porphyry center

       

               Multiple lines of geologic evidence supported by a refined structural interpretation points to structurally offset porphyry center under volcanic and sedimentary cover on BCE property

       

                BCE has permitted a series of drill holes across the property position, and is slated to begin drilling in 2009

         
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