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Continental Gold Discovers BMZ2 With Drill Intercepts of High-Grade Gold Over Broad Intervals in the Yaraguá System at the Buriticá Project, Colombia

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Continental Gold Discovers BMZ2 With Drill Intercepts of High-Grade Gold Over Broad Intervals in the Yaraguá System at the Buriticá Project, Colombia

 

 

 

 

 

Continental Gold Inc. (TSX:CNL) (OTCQX:CGOOF) is pleased to announce additional high-grade assay results from underground channel sampling and nine holes drilled into the Yaraguá system as part of the underground mine construction and exploration drilling program at its 100%-owned Buriticá project in Antioquia, Colombia. The Company plans to drill up to 73,500 metres in 2019, consisting of approximately 55,000 metres of capitalized definition drilling and approximately 18,500 metres of infill drilling. Additionally, the Company has a significant backlog of drill holes being assayed, and the results are pending and will be reported in due course. Lastly, an updated NI 43-101 mineral resource estimate for the Buriticá project remains on schedule and is expected to be completed prior to the end of Q1 2019.

 

Ari Sussman, Chief Executive Officer of the Company, stated: “Yesterday, the Company received numerous queries of concern from our shareholders questioning whether our largest shareholder, Newmont Mining, would remain engaged with Continental Gold after its merger with Goldcorp. Newmont has unequivocally confirmed that it ‘remains supportive of Continental and the continued development of the Buriticá project’.”

 

“Additionally, I would like to personally congratulate our geology and mine development teams for working together in discovering BMZ2. While it may be very early days in assessing this new discovery, we are excited nonetheless as it offers similar tonnage and grade potential to BMZ1, which has already been drill-traced over 400 metres vertically and remains open at depth. Being able to potentially mine two broad, high-grade and large tonnage zones, alongside high-grade yet narrow individual veins, will only serve to enhance the mine and increase operations flexibility. On the basis of the discovery of BMZ2, our mine development team has begun drift towards the zone and anticipates reaching it in April 2019.”

 

Detail Summary (see Table 1 and Figures 1, 2, 3 and 4)

 

Nine diamond drill holes were completed from three different locations targeting the eastern extension of the Yaraguá system. Six holes were collectively drilled from two different surface pads, while three were drilled from an underground chamber.

 

Based on reinterpretation of the geological model using recently updated lithological and block models as well as assay data from previous drilling, a location for the BMZ2 target was generated. Seven new diamond drill holes covering approximately 100 vertical metres were designed to test the target, resulting in a new discovery. Key results are as follows:

 

  • 20.10 metres @ 9.02 g/t gold and 7.9 g/t silver, including 1.70 metres @ 30.72 g/t gold and 17.3 g/t silver and 0.5 metres @ 129.50 g/t gold and 42.8 g/t silver (BUSY391, 1,339-metre elevation)
  • 8.70 metres @ 9.13 g/t gold and 14.4 g/t silver, including 0.75 metres @ 66.70 g/t gold and 96.9 g/t silver (BUSY390, 1,380-metre elevation)
  • 10.05 metres @ 5.97 g/t gold and 105.6 g/t silver, including 0.70 metres @ 57.9 g/t gold and 1,425 g/t silver (BUSY393, 1,346-metre elevation)
  • 37.95 metres @ 3.11 g/t gold and 10 g/t silver, including 0.5 metres @ 35.6 g/t gold and 4.5 g/t silver (BUUY410, 1,421-metre elevation)
  • 23.65 metres @ 3.20 g/t gold and 27.7 g/t silver, including 2.15 metres @ 14.52 g/t gold and 17.6 g/t silver (BUUY412, 1,436-metre elevation)

 

These intercepts into the BMZ2 new discovery not only confirm its presence, but also that it hosts high-grade gold over robust widths. While it is still early days towards understanding the potential of this new discovery, the Company is optimistic that additional drilling may result in a zone, which is similar to BMZ1 further to the west, that covers 440 vertical metres and remains open for depth expansion. If proven by future drilling, BMZ2 could introduce additional mine plan flexibility and greatly increase production flexibility for future mining.

 

Based on core inspection and subsequent refinement of the model, the Company believes that BMZ2 extends further south than where the drilling tested. As a result, three subsequent holes (BUSY397, BUSY398 and BUSY399) were completed into what is interpreted to be the central part of the zone; assay results for these drill holes are pending and will be reported on in due course.

 

In addition to the discovery of BMZ2, all nine diamond drill holes successfully intercepted high-grade gold-bearing veins at various elevations covering more than 580 metres. All vein intercepts resulted in significantly higher grades than in the current mineral resource block model and remain open for expansion at depth and along strike to the east towards the projection of the Tonusco fault and at depth. Key results are as follows:

 

  • 1.00 metres @ 215 g/t gold and 58.6 g/t silver (BUSY385D02, 1,168-metre elevation, MUS30 vein)
  • 10.70 metres @ 7.09 g/t gold and 65.3 g/t silver, including 0.5 metres @ 19.25 g/t gold and 26.8 g/t silver (BUSY385D02, 980-metre elevation, MU4, MU5 and MU6 veins)
  • 1.30 metres @ 94.91 g/t gold equivalent (BUSY391, 1,247-metre elevation, MU6 vein).

 

Subsequent to the Company’s October 16, 2018 announcement of sampling results taken across the axis of development tunnels in the Yaraguá system, drifting has continued along the HW vein and the San Antonio vein, as well as a new drift along a NWSE vein as shown in Figure 4. Significantly higher grades and wider exposures continue to be encountered to the southwest along the HW vein, which has been extended 9 metres for a total length along the drift of 46 metres. Additionally, development to the east in the San Antonio and HW vein drifts continues to expose remarkably continuous high-grade gold over robust widths. East in San Antonio, significant mineralization has been extended 10 metres for a total length along the drift of 30 metres. East in the HW vein, significant mineralization has been extended 11 metres for a total length along the drift of 50 metres. Additionally, the Company has been drifting along a NWSE mineralized corridor and, to date, has exposure to high-grade mineralization along the drift for a total of 33 metres. The Company will continue preparing the areas for mining as well as further advancing the drifts. Results from the HW vein and the San Antonia vein include:

 

  • 4.17 metres @ 16.17 g/t gold and 23.69 g/t silver along 46 metres (west drift on HW vein)
  • 3.66 metres @ 9.40 g/t gold and 16.41 g/t silver along 50 metres (east drift on HW vein)
  • 4.01 metres @ 15.56 g/t gold and 30.12 g/t silver along 30 metres (east drift on San Antonio vein)
  • 3.91 metres @ 8.06 g/t gold and 32.83 g/t silver along 33 metres (northwest drift in NWSE vein).

 

The results from the HW vein are significantly higher grades with wider exposures than the mineral resource estimate block model as follows:

 

 

               
Drift ID True

Horizontal

Width
(m)

Gold**
(g/t)
Silver**
(g/t)
Gold

Equivalent

 (70:1)

(g/t)

Block

Model
(g X m)

Development

Drift
(g X m)

Difference(1)
GA9551E 3.66 9.4 16.41 9.63 2.94 35.26 1,100%
GA9551W 4.17 16.17 23.69 16.51 7.39 68.84 831%
GA9550E 4.01 15.56 30.12 15.99 50.86 64.12 26%
GA9516W 3.91 8.06 32.83 8.53 8.28 33.35 303%
(1)   Represents difference between block model and the true horizontal width of the crosscut on a grams x metre basis
(2)   Channel chip samples are taken along the walls of the underground crosscuts and across the face of the underground drifts with vein exposures.

 

 

Assay results for all drill-holes reported in this release are reported in the table below:

 

Table I: Drill Hole Results

 

 

                 
Hole ID From
(m)
To
(m)
Intercept
Interval*
(m)
Gold**
(g/t)
Silver**
(g/t)
Gold
Equivalent**
(g/t)
Mid-Point
Elevation
(m)
BMZ/Vein
BUUY408 26.70 31.60 4.90 10.61 21.5 10.90 1485 BMZ2/MU9
incl 26.70 27.35 0.65 18.95 33.5 19.40 1489  
and 30.00 31.00 1.00 24.95 39.3 25.47 1486  
  96.70 97.40 0.70 12.00 26.2 12.35 1425 MU10
  129.50 131.70 2.20 4.74 5.0 4.81 1394 MU8
  153.05 156.20 3.15 3.41 8.2 3.52 1371  mu71
  315.40 317.40 2.00 5.26 40.0 5.79 1228 MU7
  325.20 329.50 4.30 4.29 13.8 4.48 1217 MU3
incl 327.80 328.35 0.55 17.50 28.0 17.87 1218  
  333.40 335.00 1.60 4.81 11.7 4.97 1212 MU3
incl 333.90 334.40 0.50 10.45 7.5 10.55 1212  
  337.35 343.15 5.80 4.01 35.5 4.49 1208 VNE30
incl 337.35 337.85 0.50 11.45 266.0 15.00 1209  
incl 340.50 341.05 0.55 9.42 73.0 10.39 1207  
BUUY410 22.35 23.10 0.75 11.75 44.8 12.35 1495 MU9
  75.25 113.20 37.95 3.11 10.0 3.25 1421 BMZ2/MU8+mu71+
MU2+CNT1
incl 84.15 84.65 0.50 28.30 11.0 28.45 1444  
incl 93.70 94.20 0.50 35.60 4.5 35.66 1436  
incl 104.50 105.10 0.60 26.60 314.0 30.79 1427  
  153.00 155.70 2.70 6.28 19.6 6.54 1388 MU4
  163.70 164.80 1.10 10.66 2.5 10.69 1379 MU4
incl 163.70 164.20 0.50 19.35 1.7 19.37 1379  
  255.35 261.30 5.95 4.08 31.7 4.51 1302 VNE30
  300.25 302.50 2.25 3.70 3.8 3.75 1269 VNC18+C11
incl 300.25 300.75 0.50 11.80 13.7 11.98 1271  
BUUY412 21.95 22.50 0.55 11.20 62.9 12.04 1495 MU9
  71.15 94.80 23.65 3.20 27.7 3.57 1436 BMZ2/MU8+mu71+MU2
incl 75.30 75.80 0.50 14.05 65.6 14.92 1451  
incl 80.35 82.50 2.15 14.52 17.6 14.75 1446  
  148.95 149.45 0.50 12.35 10.3 12.49 1391 CNT1
  168.70 169.20 0.50 12.30 25.6 12.64 1375 MU6
  192.70 193.50 0.80 5.25 56.5 6.00 1355 MU7
  358.00 361.00 3.00 1.53 25.1 1.87 1224 SA12
  368.20 369.40 1.20 6.08 3.3 6.13 1218 SA12
BUSY385D01 214.60 215.15 0.55 11.25 20.4 11.52 1077 MUS1
  229.00 229.60 0.60 10.65 13.0 10.82 1066 MU1
  231.60 232.70 1.10 8.69 3.9 8.75 1064 MU11
incl 232.20 232.70 0.50 17.05 4.9 17.12 1064  
  314.80 328.75 13.95 5.87 6.4 5.95 1001 MU5
incl 314.80 315.80 1.00 19.20 18.3 19.44 1002  
and 316.80 317.30 0.50 13.95 14.6 14.14 1001  
and 325.00 325.50 0.50 16.05 10.8 16.19 994  
and 327.15 328.75 1.60 16.92 19.8 17.18 992  
  373.90 376.50 2.60 1.79 10.6 1.93 957 VNB19
  418.00 426.20 8.20 2.24 23.3 2.55 920 SOF10
incl 419.20 419.75 0.55 10.05 193.0 12.62 925  
BUSY385D02 80.30 81.30 1.00 215.00 58.6 215.78 1168 MUS30
  92.10 101.40 9.30 2.83 7.8 2.93 1152 MUS31
  219.80 220.30 0.50 19.95 8.1 20.06 1059 MUS1
  314.60 325.30 10.70 7.09 65.3 7.96 980 MU4+MU5+MU6
incl 316.90 317.40 0.50 19.25 26.8 19.61 982  
BUSY388 71.60 72.10 0.50 7.99 28.1 8.36 1405 CB18
  73.60 74.65 1.05 4.72 25.1 5.06 1403 VNB19
  98.10 103.90 5.80 1.97 8.6 2.09 1384 BMZ2/MU7
  119.15 120.15 1.00 10.52 2.6 10.55 1373 MU6
incl 119.15 119.65 0.50 19.10 4.7 19.16 1373  
  146.90 147.90 1.00 3.91 16.8 4.13 1355 MU8
  233.80 234.80 1.00 10.64 9.4 10.77 1299 MUS12
incl 234.30 234.80 0.50 19.95 14.2 20.14 1299  
  236.55 238.15 1.60 2.91 4.2 2.97 1297 MUS11
  240.50 241.00 0.50 31.10 17.1 31.33 1295 MUS10
  322.10 324.60 2.50 1.58 2.5 1.62 1244 MUS31
BUSY390 84.80 93.50 8.70 9.13 14.4 9.32 1380 BMZ2/VNB19+CB18
incl 89.45 90.20 0.75 66.70 96.9 67.99 1382  
  143.20 144.20 1.00 3.86 24.0 4.18 1349 MU4
  218.00 219.15 1.15 3.77 15.6 3.98 1303 MU1
  249.20 249.70 0.50 47.20 138.0 49.04 1284 MUS12
  260.50 261.50 1.00 4.27 12.1 4.43 1277 MUS11
BUSY391 75.35 76.50 1.15 6.37 14.9 6.57 1376 SOF10
incl 75.95 76.50 0.55 10.70 28.3 11.08 1376  
  82.55 83.60 1.05 10.89 6.0 10.97 1370 SOF10
incl 82.55 83.05 0.50 13.25 2.9 13.29 1370  
  99.50 119.60 20.10 9.02 7.9 9.12 1339  BMZ2/c11+ c11+VNC18+CB18
incl 99.50 100.50 1.00 16.75 25.3 17.09 1356  
and 102.00 103.70 1.70 30.72 17.3 30.95 1353  
and 104.20 104.80 0.60 39.40 8.3 39.51 1352  
incl 117.60 118.10 0.50 129.50 42.8 130.07 1341  
  127.10 129.45 2.35 2.35 98.4 3.66 1331 VNB19
  132.25 133.75 1.50 4.10 6.7 4.19 1327 VNB19
  206.60 207.20 0.60 19.65 14.2 19.84 1265 MU7
  227.50 228.80 1.30 94.48 32.0 94.91 1247 MU6
incl 228.15 228.80 0.65 183.00 62.4 183.83 1246  
  260.15 260.70 0.55 10.20 78.0 11.24 1219 MU2
  269.60 271.10 1.50 20.80 194.5 23.39 1210 mu71
incl 270.10 270.60 0.50 56.00 253.0 59.37 1211  
  309.20 310.80 1.60 29.96 76.8 30.99 1177 MU10
incl 309.80 310.30 0.50 85.30 217.0 88.19 1177  
BUSY393 88.90 89.40 0.50 42.30 271.0 45.91 1376 VNC18
  121.65 131.70 10.05 5.97 105.6 7.38 1346 BMZ2/VNE30+MU3
incl 122.70 123.40 0.70 57.90 1425.0 76.90 1352  
and 125.00 125.50 0.50 13.20 2.2 13.23 1350  
  217.80 219.45 1.65 2.77 6.1 2.85 1284 mu71
  222.20 225.60 3.40 3.45 7.0 3.55 1279 MU8
  258.10 261.40 3.30 2.34 32.8 2.78 1254 MU10
  267.25 269.90 2.65 2.17 5.1 2.24 1247 CNT1
  274.70 276.20 1.50 5.79 14.5 5.99 1243 MU9
incl 275.70 276.20 0.50 15.15 40.5 15.69 1243  
* Intercepts calculated for minimum intervals of 0.5 metres..
** Grades herein are reported as uncapped values. Gold equivalent in this release and table was calculated at Au:Ag ratio of 75:1 with no assumptions made for metallurgical recovery rates.

 

 

 

Geological Description of the Buriticá Project

 

Continental’s 100%-owned, 75,023-hectare project, Buriticá, contains several known areas of high-grade gold and silver mineralization, of base metal carbonate-style (“Stage I”) variably overprinted by texturally and chemically distinctive high-grade (“Stage II”) mineralization. The two most extensively explored of these areas (the Yaraguá and Veta Sur systems) are central to this land package. The Yaraguá system has been drill-outlined along 1,350 metres of strike and 1,800 vertical metres and partially sampled in underground developments. The Veta Sur system has been drill-outlined along 1,000+ metres of strike and 1,800 vertical metres and has been partially sampled in underground developments. Both systems are characterized by multiple, steeply-dipping veins and broader, more disseminated mineralization and both remain open at depth and along strike, at high grades.

 

BMZ Details

 

The BMZ consists of a group of modelled precious metal-bearing veins in the current mineral resource estimate block model with mineralization occurring between these veins, generally in the form of veinlets at oblique angles to strike. The majority of the mineralization between modelled veins is not in the current mineral resource estimate, providing potential upside both in terms of identifying significantly broader and more productive zones for mining and increased mineral resources. To date, the Company has identified up to seven BMZ targets for testing and will systematically drill each target zone as underground mine development advances.

 

Technical Information

 

Mauricio Castañeda, Vice-President, Exploration of the Company and a Qualified Person for the purpose of NI 43‑101, has prepared or supervised the preparation of, or approved, as applicable, the technical information contained in this press release.

 

Underground development along the veins was sampled by trained crews under the direct supervision of mine geologists. The sampling consisted of channel samples that were taken by hammer and chisel across the full width of the face every 3 metres along strike, or along the rib of the drift continuously at selected locations. Distinct geological zones were sampled separately (vein separate from wall rock), with minimum-maximum horizontal sample widths of 0.2 to 1.0 metres. The widths of the channels were adjusted so that each sample weighed between approximately 2 to 8 kilograms. Sample locations were measured from a surveyed control point. Duplicate channel samples were collected with a frequency of one every 25 samples. Bar code tags were inserted into the individual sample bags by the geologist, including duplicates which were numbered in sequence with the primary samples. The bags were then secured with a cable tie and transported out of the mine by the sampling crew to a secure staging area on surface using a procedure supervised by the Mine Geologist and Chief Geologist. Channel samples were prepared and analyzed at Continental’s Yaraguá mine laboratory at Buriticá, Colombia. Blanks, field duplicates from each heading, pulp duplicates, check assays and analysis of results using industry-accepted best practices and certified reference standards are inserted into the sample stream to monitor laboratory performance. Channel samples were analyzed using a 50-gram gold fire assay with gravimetric finish. All silver values were determined by four acids digestion and atomic absorption method.

 

Besides rigorous chain-of-custody procedures, the Company utilized a comprehensive quality control/quality assurance program for the channel samples. All quality control anomalies were addressed and/or corrected as necessary to assure reliable assay results; no material quality control issues were encountered in the course of the program. Crush rejects and pulps are kept and stored in a secured storage facility for future assay verification. Although historic correlation between analytical results from the Company’s internal laboratory and certified independent laboratories for gold and silver analysis have been within acceptable limits, the Company’s internal laboratory is neither independent nor certified under NI 43-101 guidelines and, as such, channel sampling results in this release should only be taken by the reader as indicative of future potential.

 

For exploration and infill core drilling, the Company applied its standard protocols for sampling and assay. HQ and NQ core is sawn or split with one-half shipped to a sample preparation laboratory in Medellín run by ALS Colombia Limited (“ALS”), whereas BQ core samples are full core. Samples are then shipped for analysis to an ALS-certified assay laboratory in Lima, Peru. The remainder of the core is stored in a secured storage facility for future assay verification. Blanks, duplicates and certified reference standards are inserted into the sample stream to monitor laboratory performance and a portion of the samples are periodically check-assayed at SGS Colombia S.A., a certified assay laboratory in Medellín, Colombia.

 

The Company does not receive assay results for drill holes in sequential order; however, all significant assay results are publicly reported.

 

About Continental Gold

 

Continental Gold is the leading large-scale gold mining company in Colombia and is presently developing it’s 100% owned Buriticá project in Antioquia. Buriticá is one of the largest and highest-grade gold projects in the world and is being advanced utilizing best practices for mine construction, environmental care and community inclusion. Led by an international management team with a successful record of discovering, financing and developing large high-grade gold deposits in Latin America, the Buriticá project is on schedule with first gold pour anticipated during the first half of 2020.

 

Posted January 15, 2019

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