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Drilling Programs

  • Objective

    To better characterize and increase the size of the 2019 Regulus Interim Mineral Resource Estimate at AntaKori, culminating in an updated NI 43-101 resource estimate in early 2020

    Program Duration

    October 2018 through 2019 

    Program Total Meters

    Approximately 25,000m


    The Phase 2 drill program commenced in late 2018, immediately following completion of Phase 1.

    Phase 2 is anticipated to consist of approximately 25,000 metres of additional drilling with two rigs currently drilling and a two further rigs to arrive soon (Figure 1).  The Phase 2 program will initially focus on immediate extensions to the current resource including drill holes in the vicinity of AK-18-26 and will include drilling to offset the mineralization reported in AK-18-030. Approval of an additional drilling permit that will allow drilling further to the north and northwest to test geophysical targets that may represent additional skarn and/or porphyry style mineralization is anticipated by Q3-2019.

    The preparation of an additional updated mineral resource estimate is anticipated for early 2020, to understand further on Regulus’ 2019 Interim Mineral Resource Estimate see news release of March 1, 2019.

    See related Phase 2 Drilling news releases below:
    Regulus Extends Mineralization 500m to the Northwest at the AntaKori Copper-Gold Project, Peru April 2, 2019

    Regulus Reports 610.20m with 0.84 % Cu, 1.02 g/t Au and 10.28 g/t Ag (1.66 % CuEq) from Surface; Best Intercept to Date at AntaKori Project July 25, 2019

     

     

  • Objective

    To better characterize and increase the size of the existing resource at AntaKori, culminating in an updated NI 43-101 resource estimate in first quarter 2019

    Program Duration

    April 2017 - October 2018
    27 holes drilled by Regulus, 2 re-drilled holes, and 4 holes partially drilled by Coimolache onto Regulus ground

    Total Meters Drilled

     20,332.35 m 

     

    Total Holes Drilled

    33 diamond drill holes averaging 700-800m in depth

    The Phase 1 program commenced on the southernmost margin of the Regulus concessions and then moved to the north onto Regulus mineral concessions (Figure 1). The Phase 1 drill program was carried out by conventional wireline diamond drilling using up to 3 truck-mounted rigs. The core sizes used were mostly PQ (core diameter 85.0 mm) and HQ (63.5 mm), with NQ (47.6 mm) in deeper holes.

    The program consisted of 27 diamond drill holes (AK-17-001 to AK-18-027), including two holes that were lost and re-drilled, for a total of 20,332.35 m. The hole lengths varied from 433.75 m to 1,421.40 m, with an average length of 801.76 m (excluding the two lost holes; 3A and 12A). 

    The first five holes of the program were drilled from the southern margin of the Regulus concessions, along a lateral distance of approximately 900 m and all holes encountering significant mineralization outside of the currently reported 43-101 resource; which was encouraging in terms of potentially adding additional tonnage to the Antakori mineralized system. Drill holes at Antakori typically encountered the overlying Miocene volcanic rocks and high-sulphidation style mineralization prior to entering the Cretaceous sedimentary sequence and skarn style mineralization at depth. As drilling has progressed to the north, the volcanic rocks have terminated, and drill holes have entered directly into the skarn/porphyry environment within the Cretaceous sedimentary sequence (Figures 2 to 6 below).

    News releases related to AntaKori Phase 1 Drill Program with drill result tables:

    Regulus Intersects 184m with 1.54 % Copper, 1.05 g/t Gold and 11.9 g/t Silver in First Drill Hole at Antakori Project, Peru  August 15, 2017

    Regulus Intersects 523.9 metres with 0.65% Cu, 0.47 g/t Au and 7.9 g/t Ag at Antakori Project, Peru September 25, 2017

    Regulus Steps Out 400 Metres and Intersects 323.4 Metres with 0.52%Cu, 0.15 g/t Au and 8.28 g/t Ag at Antakori, Peru  November 30, 2017

    Regulus Steps to North and Intercepts 258 metres with 0.43% Cu, 0.29 g/t Au and 4.62 g/t Ag (0.68% CuEQ) at Antakori, Peru  April 13, 2018

    Regulus Intersects 327.35 metres with 0.91% Cu, 0.44 g/t Au and 9.84 g/t Ag (1.31% CuEq) at Antakori Project, Peru  July 11, 2018

    Regulus Reports Best Drill Results to Date from the Antakori Copper-Gold-Silver Project, Peru August 8, 2018

    Regulus Reports Additional High-Grade Results from the AntaKori Copper-Gold-Silver Project, Peru November 15, 2018

    Regulus Extends High Grade Copper-Gold Mineralization to the North at AntaKori Project, Peru January 30, 2019

  • Historical Drilling

    A table summarising all drilling known to have been carried out at the Antakori (formerly Sinchao) Project is shown in Table 3. A plan map showing all hole collar locations is given in Figure 1.

    Year

    Company

    Type

    No. of Holes

    Total Length (m)

    Used for the 2012 Resource

    Used for the 2019 Resource

    1923

    Northern Peru Mining & Smelting Corp. (1)

    DDH

     

     

    No

    No

    1964

    Cerro de Pasco Corporation (2)

    DDH

    4

             359.70 

    No

    No

    1970

    Kennecott Corporation (3)

    DDH

    2

     

    No

    No

    1997

    El Misti Gold Ltd

    RCH

    15

         2,098.00 

    Yes

    Yes

    1998

    El Misti Gold Ltd

    RCH

    7

         1,176.50 

    Yes

    Yes

    1998

    El Misti Gold Ltd

    DDH

    10

         5,176.25 

    Yes

    Yes

    2007-08

    Sinchao Metals Corp.

    DDH

    38

         9,503.41 

    Yes

    Yes

    2017-18

    Regulus Resources Inc. (Phase 1)

    DDH

    29

       22,140.89 

    No

    Yes

    2017-18

    Cia Minera Coimolache SA (4)

    DDH

    4

         1,031.15 

    No

    Yes

    Total

     

     

    109

       41,485.90 

     

     

    Table 3. Summary of all drilling carried out at the Antakori Project.
    Abbreviations: DDH = diamond drill hole. RCH = reverse circulation drill hole.

    Notes: (1) number of holes (“a number of holes”), meterage and location not known; (3) meterage and location not known; (1, 3) no assays; (2) Cu assays only; (1-3) no drill core; (1-3) not in database; (4) Parts of CMC holes that cut Regulus concessions.

    Historical diamond drilling was carried out pre-1997 by Northern Peru Mining & Smelting Corporation (1923), Cerro de Pasco Corporation (1964), and Kennecott Corporation (1970). No accurate drill hole locations, azimuths or plunges for these holes have been located. In addition, no assays with certificates, drill core or other information from these holes has been found and hence they are not included in the Regulus database, nor were they used in either the 2012 Southern Legacy Minerals resource or the pending 2019 Regulus Resources resource calculations.

    A summary of drill hole collar information for more recent historical diamond drilling programs carried out at Antakori (Sinchao) by El Misti Gold in 1997-98 and Sinchao Metals Corp. in 2007-08 is given in Table 4 (click here to view). Similar collar information for the historical reverse circulation drilling programs carried out by El Misti Gold in 1997-98 are listed in Table 5 (click here to view).

    The 1997-98 drill program was carried out by reverse circulation drilling and conventional wireline diamond drilling. The 2007-08 drill program was carried out by conventional wireline diamond drilling. The drill core diameters used for the 1998 diamond drill programme were HQ (core diameter 63.5 mm) and NQ (47.6 mm). The HQ3 (61.1 mm) split‐tube sampling system was used for 6 holes (SDH‐001, 005, 007, 008, 009 and 010). The core diameters used for the 2007-08 diamond drill programme were PQ (core diameter 85.0 mm), HQ (63.5 mm) and NQ (47.6 mm).

    To see the full exploration history, visit our Antakori Exploration History page.

     


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