Surge Copper Announces 610 Million Tonne Measured and Indicated Cu-Mo-Ag Mineral Resource for the Berg Deposit - il Centro Tirreno
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Surge Copper Announces 610 Million Tonne Measured and Indicated Cu-Mo-Ag Mineral Resource for the Berg Deposit

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Figure 1. Map of the Huckleberry Mining District Showing the Berg and Ootsa Properties.

 

VANCOUVER, BC, March 17, 2021 /PRNewswire/ -- Surge Copper Corp. (TSXV: SURG) ("Surge" or the "Company") is pleased to announce the results of an updated independent resource estimate prepared by Tetra Tech for the Berg copper-molybdenum-silver deposit ("Berg"), located in the Huckleberry district in central British Columbia.  

Highlights 

Leif Nilsson, Chief Executive Officer of Surge, commented: "This updated resource represents a moment in time snapshot of the Berg deposit based on the significant investment and high-quality work performed by prior operators, updated for today's commodity pricing and cost benchmarking environments. For Surge, it serves as a baseline prior to our maiden work program under our operatorship, and will guide our investment programs to deliver value in key focus areas. More generally, this resource estimate underscores the strategic significance of our acquisition and the district scale potential we see in our assets. Recent corporate transactions have demonstrated the strategic value and significance of porphyry deposits in British Columbia with a similar overall size and grade tenor to Berg. Combined with our Ootsa Property, Surge controls four advanced porphyry deposits with Measured and Indicated resources totaling 834 million tonnes in an attractive jurisdiction with excellent infrastructure." 

The Berg deposit is located within the 34,798 hectare Berg Property, in which the Company is earning a 70% interest from Centerra Gold Inc. through spending commitments totalling C$8 million over a five-year period (see December 16, 2020 news release). The Berg Property is contiguous with the Company's 100% owned Ootsa Property, which hosts 224.2 million tonnes of NI 43-101 compliant mineral resources in the Measured and Indicated categories, containing resources of copper, gold, molybdenum, and silver. 

 

Shane Ebert, President and VP Exploration, commented: "As evidenced by this resource update, our acquisition of Berg was a step change for Surge in terms of our total resource base. The deposit's size, grade profile, and near-surface geometry make it a highly attractive open pit target in the district, and there is significant potential to both increase the size of the deposit and define the near-surface higher-grade zones." 

Table 1. Mineral Resource Estimate for the Berg Deposit at 0.2% CuEq Cut-off with Effective Date of March 9, 2021.

 
     

Grade

 
 

Contained Metal

 

Material Type

 

Resource Category

 

Tonnes

 

Cu

 

Mo

 

Ag

 

CuEq

 
 

Cu

 

Mo

 

Ag

 

CuEq

 
   

(Mt)

 

(%)

 

(%)

 

(g/t)

 

(%)

 
 

(Mlbs)

 

(Mlbs)

 

(Moz)

 

(Mlbs)

 
                       

Supergene

 

Measured

 

86.9

 

0.41

 

0.03

 

2.46

 

0.50

 
 

789

 

52

 

6.9

 

960

 
 

Indicated

 

88.5

 

0.29

 

0.02

 

2.67

 

0.37

 
 

572

 

43

 

7.6

 

724

 
 

Measured & Indicated

 

175.4

 

0.35

 

0.02

 

2.57

 

0.44

 
 

1,362

 

95

 

14.5

 

1,685

 
 

Inferred

 

7.2

 

0.23

 

0.01

 

4.26

 

0.29

 
 

37

 

2

 

1.0

 

47

 
                       

Hypogene

 

Measured

 

120.3

 

0.28

 

0.04

 

3.42

 

0.41

 
 

752

 

97

 

13.2

 

1,098

 
 

Indicated

 

314.1

 

0.22

 

0.03

 

3.10

 

0.34

 
 

1,537

 

226

 

31.3

 

2,343

 
 

Measured & Indicated

 

434.3

 

0.24

 

0.03

 

3.19

 

0.36

 
 

2,289

 

323

 

44.6

 

3,441

 
 

Inferred

 

20.8

 

0.22

 

0.02

 

3.57

 

0.30

 
 

101

 

8

 

2.4

 

138

 
                       

Leachate

 

Measured

 

0.0

 

0.04

 

0.09

 

5.62

 

0.21

 
 

0

 

0

 

0.0

 

0

 
 

Indicated

 

0.2

 

0.14

 

0.12

 

2.37

 

0.25

 
 

1

 

1

 

0.0

 

1

 
 

Measured & Indicated

 

0.2

 

0.13

 

0.12

 

2.41

 

0.25

 
 

1

 

1

 

0.0

 

1

 
 

Inferred

 

0.1

 

0.11

 

0.09

 

6.13

 

0.21

 
 

0

 

0

 

0.0

 

0

 
                       

Total

 

Measured

 

207.2

 

0.34

 

0.03

 

3.0

 

0.45

 
 

1,541

 

149

 

20.1

 

2,058

 
 

Indicated

 

402.8

 

0.24

 

0.03

 

3.0

 

0.35

 
 

2,110

 

270

 

39.0

 

3,069

 
 

Measured & Indicated

 

610.0

 

0.27

 

0.03

 

3.0

 

0.38

 
 

3,651

 

419

 

59.1

 

5,126

 
 

Inferred

 

28.1

 

0.22

 

0.02

 

3.8

 

0.30

 
 

138

 

11

 

3.4

 

185

 

Notes:

Background and Description of Resource 

The Berg deposit forms a ring-like shape around a quartz-monzonite intrusive body called the Berg Stock. A total of 53,754 metres of drilling in 215 drill holes has been completed between 1964 and 2011 by previous operators including Kennecott, Placer Dome, Terrane Metals and Thompson Creek. This drilling has defined two highly-fractured mineralized zones in the northeast and southern portions of the ring. A well-developed supergene enrichment zone is superimposed on hypogene mineralization, and is predominantly controlled by topography, fracture intensity, and hypogene sulphide abundance. Drilling in many areas of the deposit remains widely spaced and mineralization is open to depth and outwards from the Berg Stock. Additionally, metallurgical test programs have been conducted on the resource, most recently between 2007 and 2012. This body of work indicates that conventional flotation processes can be used to produce marketable copper and molybdenum concentrates from the mineralization, with copper recoveries locally exceeding 80%. 

Figure 2. Selected cross section and plan map with drill hole collar locations.

The resource model was developed utilizing a database containing 20,281 assays from 49,461 metres of drilling in 201 drill holes. Drill hole assay data was composited into 3 metre intervals and a block model with 10m x 10m x 10m block size was constructed using Datamine modeling software. To better honour geological contacts, sub-celling was allowed to a minimum dimension of 5m x 5m x 5m. Mineralized domains with reasonable prospects for economic extraction were constrained incorporating geological, structural, and lithological parameters and using a 0.2% CuEq cut-off value. Within these domains, grades for copper, molybdenum, and silver were estimated using ordinary kriging (OK) grade interpolation guided by geostatistical analysis. The resulting resource model was subject to pit optimization to define a pit constrained mineral resource. 

Figure 3. Berg Deposit Constraining Pit Shape and Mineralized Zone in 3D   

able 2. Berg Deposit Resource Estimate Sensitivity to Cut-off Grade

 

CuEq % Cut-off

 

Category

 

Tonnes

 

CuEq %

 

Cu %

 

Mo %

 

Ag g/t

 

0.1

 

Measured

 

224,609,062

 

0.43

 

0.32

 

0.03

 

2.91

 

0.1

 

Indicated

 

573,094,464

 

0.29

 

0.20

 

0.02

 

2.57

 

0.1

 

M&I

 

797,703,526

 

0.33

 

0.23

 

0.03

 

2.67

 

0.2

 

Measured

 

207,228,768

 

0.45

 

0.34

 

0.03

 

3.02

 

0.2

 

Indicated

 

402,757,347

 

0.35

 

0.24

 

0.03

 

3.01

 

0.2

 

M&I

 

609,986,115

 

0.38

 

0.27

 

0.03

 

3.01

 

0.3

 

Measured

 

171,106,355

 

0.49

 

0.37

 

0.04

 

3.19

 

0.3

 

Indicated

 

237,451,842

 

0.41

 

0.28

 

0.04

 

3.43

 

0.3

 

M&I

 

408,558,197

 

0.45

 

0.32

 

0.04

 

3.33

 

0.4

 

Measured

 

124,735,864

 

0.54

 

0.41

 

0.04

 

3.38

 

0.4

 

Indicated

 

111,967,437

 

0.49

 

0.34

 

0.04

 

3.82

 

0.4

 

M&I

 

236,703,301

 

0.52

 

0.37

 

0.04

 

3.59

 

0.5

 

Measured

 

71,641,098

 

0.61

 

0.47

 

0.04

 

3.54

 

0.5

 

Indicated

 

38,519,523

 

0.57

 

0.41

 

0.05

 

4.31

 

0.5

 

M&I

 

110,160,621

 

0.60

 

0.45

 

0.04

 

3.81

 

2021 Work Program 

Surge's maiden work program at Berg will focus on defining and expanding known near-surface high-grade zones, identifying the outer limits of mineralization which remain open in several areas, and improving understanding of structures which may influence mineralizing controls, particularly for high-grade silver occurrences. Drill planning is currently underway, anticipating an initial program to commence in mid-summer 2021 following completion of access upgrade work. Prior drilling at Berg was inconsistently assayed for precious metals, and given the significant economic contribution, especially from silver, this represents a low-cost opportunity to re-assay existing core and pulps and potentially increase the precious metal content in the resource. Recommended metallurgical test work to optimize process conditions and improve target metal recovery will be further planned and progressed. Additionally, an airborne ZTEM geophysical survey is being planned for early summer to cover the entire Ootsa-Berg project area. Field teams will be active throughout the summer conducting surface work on existing regional exploration targets (see Figure 4) including any new ZTEM anomalies. Surge plans to conduct sufficient field work on regional targets to allow them to be prioritized for advanced exploration work and drill testing. 

Figure 4. Merged 2010 and 2017 total magnetic intensity geophysics, displaying known mineral showings and prospects on the Berg Property.

Qualified Person 

The Berg mineral resource estimate has been completed by Tetra Tech in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects. The mineral resource estimate has been prepared by Cameron Norton, P.Geo., Independent Qualified Person as defined by National Instrument 43-101, and has an effective date of March 9, 2021. The mineral resource estimate technical report will be filed on SEDAR within 45 days of this news release. 

Cameron Norton, P.Geo. has reviewed and approved the technical disclosure in this news release for Tetra Tech. Shane Ebert, Ph.D., P.Geo. is the Qualified Person for Surge and has reviewed and approved the contents of this release. 

About Surge Copper Corp. 

The Company owns a 100% interest in the Ootsa Property, an advanced stage exploration project containing the East Seel, West Seel and Ox porphyry deposits located adjacent to the open pit Huckleberry Copper Mine, owned by Imperial Metals. The Ootsa Property contains pit constrained NI 43-101 compliant resources of 224 million tonnes in the Measured and Indicated categories with contained metals of 1.1 billion pounds of copper, 1 million ounces of gold, and 20 million ounces of silver as summarized in the table below. 

Ootsa Project Pit Constrained Mineral Resource Estimate at $8.50/t NSR Cut-off Value

 

Category

 

Tonnes('000's)

 

CuEq

 

%

Cu %

 

Au

 

g/t

Mo

 

%

Ag g/t

 

CuEq

 

M lbs

Cu

 

M lbs

Au

 

K oz

Mo

 

M lbs

Ag

 

K oz

Measured

 

187,148

 

0.38

 

0.23

 

0.15

 

0.021

 

2.8

 

1,568

 

934

 

916

 

85

 

17,089

 

Indicated

 

37,041

 

0.35

 

0.21

 

0.12

 

0.023

 

2.8

 

286

 

175

 

146

 

19

 

3,368

 

M&I

 

224,189

 

0.37

 

0.22

 

0.15

 

0.021

 

2.8

 

1,854

 

1,109

 

1,062

 

104

 

20,457

 

Notes: The current technical report supporting the resource statement and PEA is available on SEDAR or the Company's website at www.surgecopper.com and has an effective date of January 2016.  The resource estimate uses $8.50 per tonne NSR cut-off value.  Mineral resources are not mineral reserves and by definition do not demonstrate economic viability. There is no certainty that all or any part of the mineral resource will be converted into mineral reserves.  A 'Measured Mineral Resource' is that part of a mineral resource for which quantity, grade or quality, densities, shape and physical characteristics are so well established that they can be estimated with confidence sufficient to allow the appropriate application of technical and economic parameters, to support production planning and evaluation of the economic viability of the deposit.   An 'Indicated Mineral Resource' is that part of a Mineral Resource for which quantity, grade or quality, densities, shape and physical characteristics can be estimated with a level of confidence sufficient to allow the appropriate application of technical and economic parameters, to support mine planning and evaluation of the economic viability of the deposit.  Copper Equivalent (CuEq) calculations are based on base case metal price (US$3/lb Cu, US$1260/oz Au, US$10.30/lb Mo, and US$17/oz Ag) and process recovery assumptions and take into account smelter payable rates and refining costs.  M&I = measured and indicated. The resource update and Preliminary Economic Assessment was completed by P&E Mining Consultants Inc. in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects.

The Company is also earning into a 70% interest in the Berg Property from Centerra Gold. Berg is a large, advanced stage exploration project located 28 km northwest of the Ootsa deposits. Berg contains pit constrained 43-101 compliant resources of copper, molybdenum, and silver in the Measured and Indicated categories. Combined, the adjacent Ootsa and Berg properties give Surge a dominant land position in the Ootsa-Huckleberry-Berg district and control over four advanced porphyry deposits. 

On Behalf of the Board of Directors 

"Leif Nilsson"Chief Executive Officer 

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. 

This News Release contains forward-looking statements, which relate to future events. In some cases, you can identify forward-looking statements by terminology such as "will", "may", "should", "expects", "plans", or "anticipates" or the negative of these terms or other comparable terminology. All statements included herein, other than statements of historical fact, are forward looking statements, including but not limited to the Company's plans regarding the Berg Property and the Ootsa Property.  These statements are only predictions and involve known and unknown risks, uncertainties and other factors that may cause the Company's actual results, level of activity, performance or achievements to be materially different from any future results, levels of activity, performance, or achievements expressed or implied by these forward-looking-statements. Such uncertainties and risks may include, among others, actual results of the Company's exploration activities being different than those expected by management, delays in obtaining or failure to obtain required government or other regulatory approvals or financing, inability to procure equipment and supplies in sufficient quantities and on a timely basis, equipment breakdown and bad weather. While these forward-looking statements, and any assumptions upon which they are based, are made in good faith and reflect the Company's current judgment regarding the direction of its business, actual results will almost always vary, sometimes materially, from any estimates, predictions, projections, assumptions or other future performance suggestions herein. Except as required by applicable law, the Company does not intend to update any forward-looking statements to conform these statements to actual results. 

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