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Continental Gold Drilling Extends BMZ1 to more than 400 Vertical Metres with High-Grade Gold intercepts at the Buriticá Project, Colombia

  • Broad Mineralized Zone 1 ("BMZ1") has been successfully extended vertically through drilling to the elevation of the Higabra Tunnel, which is located at the base of the mountain at the same elevation of the future mine-related facilities. High-grades of gold and silver intersected over broad intervals include:

  • BMZ1's total vertical extent now totals more than 400 metres and it remains open at depth for expansion.

  • Short-length definition drill-holes covering only the eastern portion of the lateral extent of BMZ1 have intercepted high-grade gold over broad intervals, including:

  • Two drill holes intercepted the Murcielagos vein family approximately 100 metres below the elevation of the Higabra Tunnel, with results as follows:

  • These results, coupled with earlier results announced in 2018, confirm that much higher grades of gold and silver versus the current mineral resource model are present in this vein family at these elevations along more than 300 metres of strike extent (and open).


TORONTO , Dec. 4, 2018 /CNW/ - Continental Gold Inc. (TSX:CNL; OTCQX:CGOOF) ("Continental" or the "Company") is pleased to announce additional high-grade assay results from seven definition holes and 11 expansion and infill holes drilled into the Yaraguá system as part of its 2018 definition and exploration drilling program at its 100%-owned Buriticá project in Antioquia, Colombia . The Company presently has 11 diamond drill rigs in operation; four rigs are being utilized for the ongoing stope definition drilling program and the other seven rigs are conducting infill and mineral resource expansion drilling at the Yaraguá and Veta Sur deposits.

Figure 1 – Plan View of Infill and Definition Drilling in the Yaraguá System (CNW Group/Continental Gold Inc.)

"BMZ1 results continue to impress both in terms of grades and widths and will undoubtedly lead to greater flexibility for mining. We also continue to encounter high-grades in the Murcielagos vein family as these intercepts are located close to our existing tunnel development from the Higabra Valley and, as a result, will be accessed early in the mine life," commented Ari Sussman , CEO. "Our planned updated mineral resource estimate remains on track for completion in Q1 2018."

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

Definition holes DYR0079-DYR0086 were drilled to the north-northwest from a chamber located along the main access ramp in the central portion of the Yaraguá system located slightly east of BMZ1. Results to date are being used to verify and finalize stope designs and schedule production from this area, anticipated in 2020. Definition drilling into BMZ1 is anticipated to continue throughout 2019 as development advances vertically and new chambers are constructed.

Definition drill holes DYR0079-DYR0086 were designed to define the eastern lateral portion of BMZ1 at elevations ranging from 1,492-1,455 RL. The western lateral portion at similar elevations of BMZ1 will be tested at a later date from a drill chamber located west of BMZ1. Each of the definition holes intercepted broad zones of medium to high-grade gold at or near true widths, demonstrating the robust continuity of this zone with key results including:

  • 12.05 metres @ 7.47 g/t gold and 12.4 g/t silver (DYR0079, 1,488 RL)
  • 13.40 metres @ 8.04 g/t gold and 18.2 g/t silver (DYR0081, 1,489 RL)
  • 11.50 metres @ 52.35 g/t gold and 33.5 g/t silver (DYR0085, 1,465 RL)
  • 15.50 metres @ 20.27 g/t gold and 15.5 g/ t silver (DYR0086, 1,473 RL)


The BUUY401 deviation drill hole series consisted of four drill holes (including the mother hole) and were designed to both infill and extend BMZ1 to the elevation of the Higabra tunnel. The drill holes were successful in extending the vertical extent of BMZ1 by an additional 63 metres and now reaches the elevation of the Higabra tunnel at 1,195 RL. Importantly, the zone—which now covers over 400 metres in vertical extent—remains open in high grade for expansion with future drilling. Broad and high-grade intercepts from this series of holes are as follows:

  • 16.20 metres @ 10.11 g/t gold and 11.9 g/t silver (BUUY401D, 1,337 RL)
  • 7.15 metres @ 34.80 g/t gold and 15.6 g/t silver (BUUY401D01, 1,225 RL)
  • 7.10 metres @ 13.52 g/t gold and 29 g/t silver (BUUY401D02, 1,224 RL)
  • 24.40 metres @ 10.20 g/t gold and 32.5 g/t silver (BUUY401D03, 1,224 RL)
  • 22.25 metres @ 9.30 g/t gold and 18.1 g/t silver (BUUY401D03, 1,195 RL)


Both drill hole BUUY401D01 and BUUY401D02 continued through BMZ1 to the south and intercepted high-grade gold in the Murcielagos vein family at an elevation approximately 100 metres below the elevation of the Higabra tunnel, with results as follows:

  • 0.50 metres @ 51.90 g/t gold and 417 g/t silver (BUUY401D01, Vein MU51, 1,095 RL)
  • 2.20 metres @ 85.20 g/t gold and 113.7 g/t silver (BUUY401D02, Vein MU51, 1,091 RL)


These results, coupled with earlier results announced on April 16, 2018 (i.e. BUUY370D01: 4.25 metres @ 83.65 g/t gold and 29.3 g/t silver) confirm the pervasive nature of this high-grade shoot and warrants infill and definition drilling in 2019 to outline stope designs for future mining.

Infill drilling into a central-east portion of the Yaraguá system have intercepted narrow veins containing high-grade gold and have confirmed the mineral resource block model estimate for this area with results including:

  • 3.30 metres @ 77 g/t gold and 23.6 g/t silver (BUUY401D01, Vein PRE20, 1,178 RL)
  • 1.55 metres @ 53.56 g/t gold and 48.6 g/t silver (BUUY380, Vein SA, 1,484 RL)
  • 2.20 metres @ 64.37 g/t gold and 95.9 g/t silver (BUUY383, Vein SA, 1,491 RL)


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)

Vein

BUUY364

26.25

28.20

1.95

2.67

6.1

2.76

1492

MU06


37.20

42.00

4.80

1.28

7.5

1.38

1489

MU07


43.00

48.60

5.60

2.08

12.5

2.24

1487

VNE30


55.60

58.20

2.00

3.14

9.8

3.27

1485

vne31


60.00

63.10

3.10

1.56

7.0

1.65

1484

pre20


86.00

87.70

1.70

2.88

7.4

2.98

1478

VNC18_V


94.10

95.70

1.60

5.86

11.2

6.01

1476

C40_V

incl

94.10

94.65

0.55

13.95

25.0

14.28



BUUY365

Did not reach target

BUUY369

149.90

150.90

1.00

4.16

6.5

4.25

1398

SOF10


154.40

156.50

2.10

9.48

17.6

9.72

1395

NW2

incl

154.90

155.50

0.60

22.80

52.2

23.50




177.90

180.80

2.90

2.74

1.4

2.76

1379

HWV2


218.60

221.50

2.90

1.56

3.3

1.60

1354

VND10

BUUY380

16.00

18.35

2.35

1.96

10.4

2.10

1497

MU06+MU07


44.10

45.10

1.00

5.43

19.7

5.69

1494

VNE1


131.20

131.70

0.50

55.60

31.2

56.02

1485

HWV2


143.55

145.10

1.55

53.56

48.6

54.21

1484

SA

incl

143.55

144.05

0.50

138.00

81.8

139.09




204.90

206.00

1.10

3.84

20.5

4.11

1481

VNA8


208.60

209.10

0.50

5.05

7.3

5.15

1480

New


228.90

231.70

2.80

12.85

53.3

13.56

1479

N20


242.70

243.80

1.10

21.95

83.9

23.07

1479

CNT

BUUY383

16.70

18.75

2.05

2.24

12.0

2.40

1498

MU6+MU7


44.50

45.50

1.00

3.82

27.1

4.18

1496

VNE31


48.70

51.30

2.60

2.12

2.3

2.15

1496

PRE20


130.80

131.40

0.60

26.10

30.6

26.51

1492

HWV2


142.20

144.40

2.20

64.37

95.9

65.65

1491

SA

incl

142.80

143.40

0.60

63.90

305.0

67.97



and

143.90

144.40

0.50

204.00

45.7

204.61




176.10

180.50

4.40

4.51

5.9

4.58

1490

VNAD9


208.70

210.20

1.50

2.75

7.4

2.85

1488

VNA8


232.50

233.50

1.00

3.76

27.2

4.12

1487

N20


248.80

249.50

0.70

14.35

75.4

15.36

1487

CNT

BUUY388

51.10

51.60

0.50

34.30

15.9

34.51

1493

VNE31


95.00

97.10

2.10

21.18

7.0

21.27

1487

NW2

incl

96.10

97.10

1.00

35.65

8.3

35.76




130.40

131.60

1.20

4.32

10.8

4.46

1482

HWV2


146.80

147.80

1.00

24.71

98.7

26.03

1480

SA12_V+FWV11

incl

146.80

147.50

0.70

34.50

139.6

36.36




213.90

215.40

1.50

3.08

18.4

3.32

1473

CNT1


232.00

235.50

4.00

4.48

37.5

4.98

1470

N20

incl

233.00

233.50

0.50

16.10

213.0

18.94



BUUY396

41.50

44.80

3.30

2.19

6.9

2.28

1458

MU6


211.10

212.10

1.00

4.76

31.7

5.18

1306

C30


227.10

228.70

1.60

12.43

23.8

12.75

1291

C11

incl

227.10

227.70

0.60

31.10

55.6

31.84




251.90

252.40

0.50

8.46

96.0

9.74

1269

SOF10


310.00

310.50

0.50

7.39

66.9

8.28

1217

HWV2


323.80

324.85

1.05

4.62

17.0

4.85

1203

SA12

BUUY401D

65.00

67.35

2.35

4.35

3.8

4.40

1469

NWSE3


76.30

77.80

1.50

3.65

6.0

3.73

1459

NW2


205.50

221.70

16.20

10.11

11.9

10.27

1337

BMZ1

incl

209.30

209.80

0.50

48.60

121.0

50.21



and

215.30

216.30

1.00

69.55

44.3

70.14




232.80

234.80

2.00

7.77

9.5

7.90

1319

C11

incl

234.30

234.80

0.50

15.20

9.8

15.33



BUUY401D01

31.50

38.65

7.15

34.80

15.6

35.00

1225

BMZ1

incl

37.00

38.65

1.65

111.74

37.6

112.24




56.30

57.60

1.30

3.75

2.2

3.78

1209

CB18


76.40

77.00

0.60

8.85

3.7

8.90

1193

VNB19


92.40

95.70

3.30

77.00

23.6

77.32

1178

PRE20

incl

6.00

93.90

0.50

314.00

70.5

314.94




193.15

193.65

0.50

51.90

417.0

57.46

1095

MU51

BUUY401D02

3.60

10.70

7.10

13.52

29.0

13.91

1224

BMZ1

and

8.90

9.70

0.80

57.10

21.2

57.38




40.95

48.70

7.75

5.83

7.8

5.93

1195

CB18

incl

41.45

42.55

1.10

17.56

15.4

17.77



and

47.70

48.20

0.50

26.10

16.9

26.33




172.30

174.50

2.20

85.20

113.7

86.71

1091

MU51

incl

172.30

173.50

1.20

154.26

120.2

155.86



and

173.00

173.50

0.50

311.00

232.0

314.09



BUUY401D03

16.30

40.70

24.40

10.20

32.5

10.66

1224

BMZ1

incl

26.70

28.30

1.60

60.60

85.6

61.82



and

35.00

36.20

1.20

31.90

51.7

32.64




52.75

75.00

22.25

9.30

18.1

9.56

1195

BMZ1

incl

53.80

54.35

0.55

89.10

69.2

90.09



and

55.50

56.10

0.60

40.90

19.1

41.17



and

68.20

68.75

0.55

67.10

4.0

67.16



DYR0079

55.80

56.90

1.10

4.92

9.0

5.04

1486



61.35

73.40

12.05

7.47

12.4

7.64

1488

Partial BMZ1

incl

62.24

62.81

0.57

38.60

36.1

39.08



and

67.70

69.43

1.73

19.92

38.2

20.43



DYR0080

16.65

21.90

5.25

2.80

5.8

2.87

1467

C20_V


40.00

48.60

8.60

4.22

7.5

4.32

1451

C11_V

incl

42.25

43.20

0.95

13.22

18.4

13.46




65.50

66.30

0.80

17.97

15.2

18.17

1440

HWV1


78.90

82.60

3.70

6.60

22.2

6.90

1431

Partial BMZ1

incl

80.90

81.40

0.50

18.08

36.8

18.57



DYR0081

22.00

28.00

6.00

5.95

2.6

5.98

1484

C11_V

incl

24.00

25.00

1.00

24.04

3.5

24.09




30.68

34.65

3.97

2.71

7.2

2.81

1485

SOF10


62.60

76.00

13.40

8.04

18.2

8.29

1489

Partial BMZ1

and

65.60

67.00

1.40

14.64

53.0

15.35



and

71.60

73.25

1.65

20.14

30.6

20.55




81.00

84.00

3.00

8.17

3.3

8.21

1492

FWV11

incl

81.00

82.00

1.00

21.13

6.0

21.21



DYR0082

34.10

38.00

3.90

2.89

9.6

3.02

1486

C11_V


57.30

68.20

10.90

5.88

12.6

6.05

1488

Partial BMZ1

incl

66.00

66.60

0.60

60.70

131.0

62.45



DYR0083

54.85

60.60

5.75

8.05

12.4

8.21

1455

Partial BMZ1

incl

55.77

56.07

0.30

88.91

131.1

90.66



DYR0085

53.70

65.20

11.50

52.35

33.5

52.80

1465

Partial BMZ1

incl

62.78

65.00

2.22

253.54

127.6

255.24



incl

62.78

63.60

0.82

615.26

331.5

619.68



DYR0086

10.40

11.40

1.00

5.05

6.5

5.13

1480

C30


26.35

30.25

3.90

3.40

9.7

3.53

1477

C11_V


50.30

65.80

15.50

20.27

15.5

20.47

1473

BMZ1

incl

62.54

65.10

2.56

89.91

54.2

90.63





*

Intercepts calculated for minimum intervals of 0.5 metres. DYR series of drill holes are between 95-100% true widths while BUUY holes are between 65-100% true widths. Internal dilution within reported intervals generally does not exceed 20%

**

Grades herein are reported as uncapped values

***

Gold equivalent in this release and table was calculated at Au:Ag ratio of 1:75 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 broad mineralized zone ("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. BMZ1 encompasses a matrix of the east-west trending FW, San Antonio and HW veins as well as a package of a NW‑SE vein and subsidiary veinlets.

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.

Reported intervals include minimum weighted averages of 3 g/t gold equivalent (75:1 Au/Ag) over core lengths of at least 1.0 metres. Assays are uncut except where indicated.

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 lab in Medellín run by ALS Colombia Limited ("ALS") in Colombia , 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 .

For stope definition core drilling, the Company applied its standard protocols for sampling and assay. The HQ3 samples were full core and provided sample widths between 0.2 to 1.0 metres weighing approximately 2 to 8 kilograms. Custody of the Samples were transferred at the mine site to Actlabs Colombia using rigorous chain-of-custody procedures. Full-core HQ3 samples are prepped and analyzed at Actlabs Colombia's ISO 9001 accredited assay in Medellín, Colombia . The remainder of crushed rejects and pulps are stored in a secured storage facility for future assay verification. Blanks, pulps duplicates, coarse duplicates and purchased certified reference standards are inserted into the sample stream to monitor laboratory performance. A portion of the samples are periodically check-assayed at ALS Peru's ISO 9001 accredited assay laboratory in Lima, Peru .

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

For information on the Buriticá project, please refer to the technical report, prepared in accordance with NI 43‑101, entitled "Buriticá Project NI 43–101 Technical Report Feasibility Study, Antioquia, Colombia " and dated March 29, 2016 with an effective date of February 24, 2016 , led by independent consultants JDS Energy & Mining Inc. The technical report is available on SEDAR at www.sedar.com, on the OTCQX at www.otcmarkets.com and on the Company website at www.continentalgold.com.

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. Additional details on Continental Gold's suite of gold exploration properties are also available at www.continentalgold.com.

Forward-Looking Statements

This press release contains or refers to forward-looking information under Canadian securities legislation—including statements regarding: timing of drill results, an updated mineral resource estimate and mine plan and commercial production; advancing the Buriticá project; exploration results; potential mineralization; potential development of mine openings; potential improvement of mining dilution grades; reducing start-up risks; and exploration and mine development plans—and is based on current expectations that involve a number of significant business risks and uncertainties. Forward-looking statements are subject to other factors that could cause actual results to differ materially from expected results. Readers should not place undue reliance on forward-looking statements. Factors that could cause actual results to differ materially from any forward-looking statement include, but are not limited to, an inability to advance the Buriticá project to the next level, failure to convert estimated mineral resources to reserves, capital and operating costs varying significantly from estimates, the preliminary nature of metallurgical test results, delays in obtaining or failures to obtain required governmental, environmental or other project approvals, political risks, uncertainties relating to the availability and costs of financing needed in the future, changes in equity markets, inflation, changes in exchange rates, fluctuations in commodity prices, delays in the development of projects and the other risks involved in the mineral exploration and development industry. Specific reference is made to the most recent Annual Information Form on file with Canadian provincial securities regulatory authorities for a discussion of some of the factors underlying forward-looking statements. All the forward-looking statements made in this press release are qualified by these cautionary statements and are made as of the date hereof. The Company assumes no responsibility to update them or revise them to reflect new events or circumstances other than as required by law.

Differences in Reporting of Resource Estimates

This press release was prepared in accordance with Canadian standards, which differ in some respects from United States standards. In particular, and without limiting the generality of the foregoing, the terms "inferred mineral resources," "indicated mineral resources," "measured mineral resources" and "mineral resources" that may be used or referenced in this press release are Canadian mining terms as defined in accordance with National Instrument 43‑101 – Standards of Disclosure for Mineral Projects under the guidelines set out in the Canadian Institute of Mining, Metallurgy and Petroleum (the "CIM") Standards on Mineral Resources and Mineral Reserves (the "CIM Standards"). The CIM Standards differ significantly from standards in the United States . While the terms "mineral resource," "measured mineral resources," "indicated mineral resources," and "inferred mineral resources" are recognized and required by Canadian regulations, they are not defined terms under standards in the United States . "Inferred mineral resources" have a great amount of uncertainty as to their existence, and great uncertainty as to their economic and legal feasibility. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to a higher category. Under Canadian securities laws, estimates of inferred mineral resources may not form the basis of feasibility or other economic studies. Readers are cautioned not to assume that all or any part of measured or indicated mineral resources will ever be converted into reserves. Readers are also cautioned not to assume that all or any part of an inferred mineral resource exists or is economically or legally mineable. Disclosure of "contained ounces" in a resource is permitted disclosure under Canadian regulations; however, United States companies are only permitted to report mineralization that does not constitute "reserves" by standards in the United States as in place tonnage and grade without reference to unit measures. Accordingly, information regarding resources contained or referenced in this press release containing descriptions of our mineral deposits may not be comparable to similar information made public by United States companies.

Figure 2 – Cross Section A-A’ of Extension and Definition Drilling in BMZ1 (CNW Group/Continental Gold Inc.)
Figure 3 – Cross Section B-B’ of Infill Drilling in Central-Eastern Yaraguá (CNW Group/Continental Gold Inc.)

SOURCE Continental Gold Inc.


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