At Majuba Hill the property access, climate, and physical setting are all favorable. The site is remote from large population centers but not so much that it has wilderness value. Normal weather and climate of the area would not hinder year-round access or interfere with exploration and mining activities.
The project shows indications of a potentially large Cu – Ag +/- Au mineralized body with many features in common with both large porphyry copper and silver – tin type mineralization. Small scale historic mining concentrated on the Majuba fault zone and veins in subordinate structures. Drilling has identified a body of oxide copper-silver mineralization, but this body has not been fully defined or properly modeled to produce a mineral resource estimate. A few deeper drill holes, IP geophysical surveys, and surface geochemistry have tentatively identified target areas with potential to significantly expand the mineralization.
Location & Infrastructure
The Majuba Hill property is 113 road km (70 miles) southwest of Winnemucca, Nevada, and 251 km (156 miles) northeast of Reno. Access is by well-maintained county roads from the Imlay, Nevada exit on U.S. Interstate 80, and traveling westward 23 miles.
The project is in north central Pershing County, about 251 km (156 miles) northeast of Reno, Nevada with a Gravel Road Access maintained by Pershing County. The nearest supply center is Winnemucca, Nevada. Winnemucca offers food, lodging, fuel, and some exploration services. All mineral exploration services including supplies, analytical laboratories, and drilling service companies are available in Reno or in Elko, Nevada, about 210 road miles to the east of the project.
Reno and Elko are the major supply centers for exploration and mining activities in Nevada. The nearest airport with commercial service is Reno, Nevada.The highways are sufficient for transportation of exploration-size heavy equipment. Development logistics would use the 4 lane Interstate 80 highway, Union Pacific railroad tracks and adjacent power, natural gas, and fiber optic transmission lines in the rail – highway corridor. A few four-wheel drive roads and ATV trails provide access to the main target areas.
Mining is a common occupation in the area with several small to world class mines operating in the Winnemucca – Lovelock area over the past several decades. A well-trained and experienced mining workforce pool is available in Nevada that will flow to where it is needed.
Majuba Hill consists of 403 federal lode mining claims as well as four private property parcels that in aggregate cover 3,916 hectares (9,676 acres).
Majuba Hill is a porphyry copper silver prospect located 70 miles southwest of Winnemucca, Nevada, 156 miles east-northeast of Reno
Previous drill results include:7.6M at 1.55% Cu, 44.5M at 1.41% Cu, 47.4m at 1.06% Cu, 113m at 0.45% Cu
Majuba Hill has a history of production, a database of previous drilling, with a conceptual open pit, block model in place
Upcoming drill program to bring resource to inferred and indicated status.
Majuba Hill is a porphyry copper project. Historic underground mines produced Copper, tin, and silver from the early 1900s into the 1950s.
Modern drilling, geologic mapping, rock/soil geochemistry, and geophysical data outline an area containing up to 660 million pounds of oxide/enriched copper in outcropping and near surface mineralization that is mineable by open pit methods.
Oxide/enriched Copper mineralization extends up to 490 meters (1600 feet) below the surface and is open in all directions.
Historic underground mines produced high-grade copper from outcropping porphyry copper mineralization.
- 2.8 million pounds of copper
- 184,000 ounces of silver
- 5,800 ounces of gold
- 21,000 pounds of tin
Between 2007 and the present, 64 holes with a total of 45,214.2 feet were drilled at Majuba. Prior to this, 29 holes with a total of 25,380 feet were drilled between 1920 and 1975. Drill logs and assays for the historic drilling are available in various formats. The modern (2007 and later) drilling records are in very good condition and have been converted to electronic format along with all assay certificates and results. Core and chips are stored in Elko, Nevada for the modern drilling. Known oxide mineralization extends from the surface to at least 1000 feet beneath the surface.
In 2020, Majuba Hill Copper carried out various activities at the Majuba Hill project. Here are the key highlights:
- Five core holes and four Reverse Circulation (RC) holes were drilled, totaling 8,706 feet (2,653.6 m).
- Two core holes specifically targeted the historic known oxide zone, reaching a depth of 786 feet (239.6 m), to expand and confirm the presence of high-grade copper near the surface.
- The four RC holes were drilled to explore and expand the near-surface copper oxide and enrichment zone, covering a distance of 3,000 feet (914.4 m).
- Core holes MHB-7, -8, and -9 were deep holes reaching a depth of 4,920 feet (1,499.6 m) to investigate deep sulfide/enrichment and deep sulfide/primary copper mineralization.
New Access Road and Discoveries:
- An access road was constructed in the eastern area, leading to the discovery of three extensive copper oxide zones near two historical prospect pits.
- The road’s construction revealed previously unknown copper oxide (malachite) and sulfide (chalcocite) showings, below a small historic prospect pit.
- A total of 399 soil samples were collected in 2020 to expand the historic soils grid.
Research and Investigation:
- The Center for Research in Economic Geology (CREG) at the University of Nevada-Reno initiated detailed research and investigation into the different intrusive rocks, hydrothermal alteration, and stages of mineralization at Majuba Hill.
2021 DRILL PROGRAM
In 2021, Majuba Hill Copper conducted extensive drilling and geological work at the Majuba Hill Porphyry Copper Project. Here are the key highlights:
- 14,893.5 feet (4,539.5 m) were drilled in 15 Reverse Circulation (RC) holes and 2 core holes.
- The 2 core holes targeted the Copper-Gold area and reached a depth of 2,819 feet (859.4 m).
- The focus of the 12,080 feet (5,5181.6 m) RC drilling was the known copper mineralization target, with two holes specifically testing the DeSoto Target.
- An additional 969 soil samples were collected in 2021, with total number of soil samples collected thus far is 2,337.
- The purpose was to expand the Copper-Gold Target, extend the DeSoto Target, and cover the 789 Target discovered during the 2020 Induced Polarization/Resistivity geophysical program.
- These zones exhibited anomalous levels of copper, silver, gold, lead, molybdenum, and zinc.
- Drone magnetic and ground IP/Resistivity geophysical programs were conducted in 2021.
- The magnetic survey covered the entire project area, spanning 322 line-km.
- IP/Resistivity added 49.5 line-km of data to the existing 28.5 line-km from historical records.
- Detailed geologic work in 2021 focused on understanding and outlining the factors influencing copper enrichment mineralization at Majuba Hill.
- This involved structural mapping, analysis of thin sections, dating techniques, and a deeper exploration of the copper’s geochemical associations with porphyry trace elements.
2022 DRILL PROGRAM
In 2022, Majuba Hill Copper carried out various activities at the Majuba Hill project. Here are the key highlights:
- Collected 1050 additional soil samples which significantly increased the size of the DeSoto and the Copper Gold Target zones.
- The DeSoto Target was extended westward by over 3200 feet (975 m) and overlaps with the early-stage Section 4 target zone. Anomalous copper, gold, molybdenum, zinc, and arsenic values were identified at the 789 Target and those zones are open to the north and west.
- Age Dated mineralized samples, demonstrating that Majuba Hill is a series of overlapping copper, molybdenum, tin porphyry mineralization events.
- Drilled 8,876 feet (2706 m) in three core holes. Porphyry veining and alteration zonation indicates the intensity of the porphyry copper mineralization is increasing towards the northeast.
- The 2022 core drilling program focused on the Majuba Target Zone. The goal was to complete deeper holes and extend the copper mineralization intersected in the 2020 and 2021 drill campaigns.
Significant Drill Results
NI 43-101 Mineralization
Total Drilling-104 holes
- 25,005 meters in 49 RC/55 Core
Drill Holes Mineral Estimation-78 holes
- 22,543 meters in 33 RC/45 Core
Whittle Pit Input Parameters
- 10 m blocks/ 3 m composites
- Grade Domains: 0.02 to 0.05%Cu; 0.05 to 0.5% Cu; >0.5% Cu
- Copper Price: $3.50 to 8.90 per pound
- Mining/Leach Costs: $4.81/tonne (Acid-$135/tonne)
- Recovery: 70 to 90%
Exploration Target-Conceptual Pits
- 50 million to 100 million tonnes
- 0.15% Cu to 0.30% Cu
Potential Higher-grade Zones
- 10 to 20 million tonnes
- 0.40 % Cu to 0.80% Cu
(1) Conceptual open-pit scenarios for the mineralized material do not meet the test for “reasonable prospects for eventual economic extraction” with currently appropriate economic inputs, Canadian Institute of Mining, Metallurgy, and Petroleum (2014)
- Most important hole prior to Majuba Hill Copper Corp to date is MMX-24: 366 meter hole that intersected 113m @ 0.45% Cu from 222.5 to 335.5 m
- This high grade interval is within a thick zone of copper mineralization
- The hole also had 123m @ 8.5 g/t Ag
- Shallow oxide mineralization is prominent at Majuba Hill
Since 1941 there have been eight drill campaigns that drilled 74 holes at Majuba Hill. Six by exploration companies and one by the U.S. Bureau of Mines. Prior to 1970, 16 holes (1,114 m/3656 feet) were drilled by Freeport Sulfur Company (1942) and the U.S. Bureau of Mines (1948). Since 1970, 13,906 meters (45,622 feet) in 58 core and RC holes was completed at Majuba.
We have constructed a detailed geologic model using all of the drill data. This 3D GIS model gives us a solid spatial platform to visualize the Known Oxide Zone and expand it into the much larger Majuba Oxide Extension Area.
Historic surface drilling has delineated an outcropping copper and silver oxide zone. Historic core holes drilled by Max Resources and described in the technical report prepared for Galileo Exploration Ltd. in May 2017 (NI43-101 Technical Report, Majuba Hill Project, Pershing County, Nevada, A.J. Morris CPG QP) returned good oxide copper in a discrete area around the historic underground workings.
· MM-05: 89.2 m @ 0.27% Cu from 0 to 89.2 m
· MM-06: 47.4 m at 1.06% Cu from 0 to 47.4 m
· MH-7: 97.5 m at 0.33% Cu from 25.9 to 123.4 m
· MG1703: 20.4 m at 0.71% Cu from 102.9 to 123.3 m
All drilling combined suggests that the total Majuba Hill Potential is for 350-500 million tons in sulfide and oxide mineralization at grades estimated to be 0.3 to 0.4% Cu, 9 to 14 ppm Ag, and 0.175 to 0.25 ppm Au.
When all of the geological and drilling data is integrated with the magnetic and IP surveys it presents extremely compelling evidence that the sulfide copper porphyry mineralization known from MMX-24 and other historic deeper holes extends southwesterly.
There is a distinct association between the Magnetic Survey results and high copper values in historic drilling and underground mining. Three-dimension grade modeling of the known oxide copper mineralization shows copper values increasing to the south. The oxide copper mineralization is along the edge of the eastern magnetic low.
IP Chargeability DS 200-400 m
IP Resistivity DS 400-600 m