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Liberty Gold Announces Discovery of a Third High Grade Oxide Gold Zone (D-3) at the Black Pine Project, Idaho, USA

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Liberty Gold Announces Discovery of a Third High Grade Oxide Gold Zone (D-3) at the Black Pine Project, Idaho, USA






Liberty Gold Corp. (TSX:LGD) is pleased to announce the first drill results from the 2020 drill program at its Carlin-style Black Pine property in southern Idaho, USA. 


A third high grade oxide gold discovery (D-3 Zone) has been discovered in close proximity to the D-1 and D-2 zone discoveries made in 2019. The D-3 zone lies beneath the limit of shallow historical drilling in a stratigraphic unit that is modeled to underlie at least the southern two thirds of the Black Pine gold system. This stratigraphic horizon, the lowest in the 400 metre-thick carbonate sequence that hosts gold mineralization at Black Pine, is the primary host for gold mined in the historic CD pit, but has only been tested by shallow drill holes in two other locations on the property.


Reverse Circulation drilling to the west of the now-amalgamated Discovery 1 and 2 zones (“D-1” and “D-2”) encountered a thick zone of high-grade oxide gold in hole LBP127 below and laterally adjacent to the historic B pit, where outcropping gold mineralization was mined at a 1.38 grams per tonne gold. LBP127 bottomed in grade, with the last five, 5-foot sample intervals grading greater than 2 g/t Au. LBP129, drilled 215 m to the north, returned 1.60 g/t Au over 29.0 m, including 2.09 g/t Au over 19.8 m at the same vertical elevation. 


In addition, new drilling in the D-1 / D-2 zones:


  • Confirms the extension of oxide gold mineralization at shallow depth in the 400 m-long gap between the southeast end of the D-1 zone and the Tallman Pit.
  • Confirms the presence of oxide gold in a sparsely-drilled area at the transition between D-1 and D-2.
  • Extends the D-1 zone an additional 40 m further to the west.


A third drill has been mobilized to the Black Pine Project, and the current exploration program has been increased from 28,000 m to 46,000 m, exclusive of a core drilling program planned for later in the season. Liberty Gold is well funded to continue to accelerate its exploration efforts.


“The new D-3 discovery will be drill-defined in the same manner as the D-1 and D-2 discoveries in 2019,” comments Cal Everett, President and CEO of Liberty Gold. “The intercept in LBP127 is the 9th best drill hole that Liberty Gold has drilled to date on a top-to-bottom, grade-times-thickness basis. The combination of several high-grade oxide gold discoveries in close proximity to each other, and in association with recently released excellent metallurgy elevates the value of the Black Pine project. Liberty Gold has increased its land holdings in the project area and have protected our interests on a district scale. Intercepts like we encountered in LBP127 never tend to occur in isolation and we are looking forward to drill-testing this new stratigraphic horizon in the D-3 discovery. Two drills are currently focused on and will not wander away from D-3, with a third drill exploring new targets.”




Hole ID (Az, Dip) (degrees) From (m) To (m) Intercept
Au (g/t) Au Cut-Off
Hole Length (m) Target Concept Comments
LBP125 (200, -55) 335.3 345.9 10.7 1.07 0.2 365.8 D-3 Hole ended in mineralization
and 355.1 365.8 10.7 0.48
LBP127 (60, -58) 224.0 257.6 33.5 1.98 0.2 294.1 D-3 Hole lost; last five assay intervals return > 2 g/t Au: no recovery in some of the lower interval (assigned 0 grade)
incl 239.3 254.5 15.2 3.93 1
and 263.7 294.1 30.5 1.11 0.2
incl 286.5 294.1 7.6 2.39 1
LBP129 (15, -65) 65.5 80.8 15.2 0.41 0.2 339.9 D-3  
and 222.5 228.6 6.1 0.73
and 240.8 269.7 29.0 1.60
incl 243.8 263.7 19.8 2.09 1


1A number of mineralized intervals were omitted from this table for brevity. Please refer to the full table at the link below for complete results.


For a cross section of drill collars and traces for the current release, please click here:


For a map of drill collars and traces for the current release, please click here:


For a complete table of drill results from all Liberty Gold drill holes at Black Pine, please click here:


As presently defined, the D-3 zone is defined by three holes. LBP125 and LBP129 lie along a 450 m-long, northeast-southwest trending section. The intercept in LBP127 is located 215 m south of LBP129. This area is currently the focus of drilling offsets to the mineralization in LBP127 and LBP129 to determine the size of the zone, which is open for extension in all directions.


D-3 Key Points


  • LBP127 represents a new discovery (D-3) to the west of the D-1 and D-2 zones, two new discoveries of high-grade mineralization made in 2019 below the limit of historic drilling. 
  • Being located in close proximity to D-1 and D-2, the D-3 zone is accretive to the overall gold endowment in the northern portion of the Black Pine gold system.
  • The new discovery is located in a stratigraphic unit that lies below the unit hosting high-grade gold mineralization in the D-2 zone. This unit is modeled to underlie the southern two thirds of the gold system and is the primary host for mineralization mined in the historic CD pit but has only been tested by historic drill holes in a few locations. 
  • The existence of high-grade gold mineralization in this new stratigraphic unit brings the number of stacked, prospective gold host horizons at Black Pine to three.
  • Cyanide-soluble assays for the highlight intervals have a weighted average 94% and 87% (upper and lower highlight intervals in LBP127) and 97% (highlight interval in LBP129), respectively, attesting to the oxidized nature of gold mineralization.
  • In terms of mineral endowment, LBP127 ranks as the 9th best hole Liberty Gold has drilled to date in terms of top-to-bottom grade-times-thickness, despite bottoming in over 2 g/t Au, and the best hole historically drilled into this new stratigraphic horizon across the property.


D-1 Southeast Extension


Three holes in this release targeted, and confirmed, the presence of shallow oxide gold mineralization in a 400 m-long, untested gap between the south end of the historic B Pit and the historic Tallman Pit. This extends the 1 kilometre (“km”)-long D-1 zone an additional 0.5 km to the southeast. Additional drilling is planned for this area to further drill off the gold mineralization.





Hole ID (Az, Dip)
From (m) To (m) Intercept
Au (g/t) Au Cut-Off
Hole Length (m) Target Concept Comments  
LBP124 (250, -65) 85.3 123.4 38.1 0.39 0.2 208.8 B Pit to Tallman Pit (D-1 SE extension)    
LBP126 (150, -65) 70.1 83.8 13.7 0.44 0.2 208.8 B Pit to Tallman Pit (D-1 SE extension)    
and 131.1 160.0 29.0 0.54 0.2  
incl. 150.9 153.9 3.0 1.54 1  
LBP128 (90, -65) 64.0 85.3 21.3 0.31 0.2 213.4 B Pit to Tallman Pit (D1 SE extension)    
and 155.4 173.7 18.3 0.59  
incl 164.6 169.2 4.6 1.42 1  


1A number of mineralized intervals were omitted from this table for brevity. Please refer to the full table at the link below for complete results.


D-2 to D-1 Transition and D-2 Infill


Four holes were drilled into gaps in the drilling pattern at the southwest end of the D-2 zone and transitional into the D-1 zone. All holes returned significant intervals of oxide gold, including multiple intervals grading greater than 1 g/t Au in LBP111. LBP115 tested the D-1 zone along the projected trend of D-2, extending mineralization an additional 40 m to the southwest.





Hole ID (Az, Dip)
From (m) To (m) Intercept
Au (g/t) Au Cut-Off
Hole Length (m) Target Concept Comments  
LBP107 (90, -83) 196.6 207.3 10.7 0.53 0.2 312.4 D-2 Infill    
and 239.3 253.0 13.7 0.96  
and 262.1 283.5 21.3 0.92  
incl 268.2 274.3 6.1 2.17 1  
LBP109 (235, -71) 169.2 175.3 6.1 0.65 0.2 324.6 D-2 Infill    
and 196.6 221.0 24.4 0.58  
incl 214.9 219.5 4.6 1.24  
and 249.9 265.2 15.2 0.66  
and 297.2 301.8 4.6 1.41  
and 307.8 312.4 4.6 1.32  
LBP111 (93, -65) 68.6 97.5 29.0 0.45 0.2 342.9 D-1 to D-2 Transition    
and 179.8 201.2 21.3 1.27  
and 237.7 245.4 7.6 0.94  
and 265.2 285.0 19.8 0.74  
incl 271.3 275.8 4.6 1.52 1  
and 318.5 324.6 6.1 2.17 0.2  
and 330.7 333.8 3.0 3.05  
LBP113 (120, -75) 10.7 19.8 9.1 0.43 0.2 330.7 D-1 to D-2 Transition    
and 94.5 109.7 15.2 0.58  
and 202.7 207.3 4.6 0.76  
and 243.8 253.0 9.1 1.12  
LBP115 (300, -80) 27.4 82.3 54.9 0.32 0.2 361.2 D-1 Step Out    
and 204.2 263.7 59.4 0.65  
incl 259.1 262.1 3.0 2.21 1  
and 271.3 285.0 13.7 0.62 0.2  


1A number of mineralized intervals were omitted from this table for brevity. Please refer to the full table at the link below for complete results.


RC drilling is ongoing at Black Pine, with three drill rigs currently operating, testing new targets and expanding on the focused drilling carried out in 2019 over much of the 7.3 km2 permit area. In addition to drilling, Liberty Gold is expanding the permit area to include an additional 4.6 km2. Metallurgical column testing is ongoing, with a second metallurgical release from core sampling expected in Q3.




Black Pine is located in the northern Great Basin, immediately adjacent to the Utah/Idaho border. It is a Carlin-style gold system, similar in many ways to the prolific deposits located along Nevada’s Carlin trend. Like Newmont’s Long Canyon deposit, Black Pine represents a growing number of Carlin-style gold systems located off the main Carlin and Cortez trends in underexplored parts of the Great Basin. The historic Black Pine Mine operated from 1992 to 1997, during a period of historically low gold prices, with 435,000 ounces of gold produced from five composite, shallow pits.


A Technical Report is also available on the Company website:


Moira Smith, Ph.D., P.Geo., Vice-President Exploration and Geoscience, Liberty Gold, is the Company’s designated Qualified Person for this news release within the meaning of National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) and has reviewed and validated that the information contained in the release is accurate. Drill composites were calculated using a cut-off of 0.20 g/t. Drill intersections are reported as drilled thicknesses. True widths of the mineralized intervals vary between 30 and 100% of the reported lengths due to varying drill hole orientations but are typically in the range of 60 to 80% of true width. Drill samples were assayed by ALS Limited in Reno, Nevada for gold by Fire Assay of a 30 gram (1 assay ton) charge with an AA finish, or if over 5.0 g/t were re-assayed and completed with a gravimetric finish. For these samples, the gravimetric data were utilized in calculating gold intersections. For any samples assaying over 0.200 ppm an additional cyanide leach analysis is done where the sample is treated with a 0.25% NaCN solution and rolled for an hour. An aliquot of the final leach solution is then centrifuged and analyzed by Atomic Absorption Spectroscopy. QA/QC for all drill samples consists of the insertion and continual monitoring of numerous standards and blanks into the sample stream, and the collection of duplicate samples at random intervals within each batch. Selected holes are also analyzed for a 51 multi-element geochemical suite by ICP-MS. ALS Geochemistry-Reno is ISO 17025:2005 Accredited, with the Elko prep lab listed on the scope of accreditation.




Liberty Gold is focused on exploring the Great Basin of the United States, home to large-scale gold projects that are ideal for open-pit mining. This region is one of the most prolific gold-producing regions in the world and stretches across Nevada and into Idaho and Utah. We know the Great Basin and are driven to discover and advance big gold deposits that can be mined profitably in open-pit scenarios. Our flagship projects are Black Pine in Idaho and Goldstrike in Utah, both past-producing open-pit mines, where previous operators only scratched the surface.


Posted June 23, 2020

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