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Osisko Development Announces Receipt of Underground Bulk Sample Permit and Intersects High Grade Gold at Cariboo

·14 min read

Figure 1: Cariboo deposit areas overview map

Figure 1: Cariboo deposit areas overview map
Figure 1: Cariboo deposit areas overview map
Figure 1: Cariboo deposit areas overview map

Figure 2: Underground development plan and bulk sample location

Figure 2: Underground development plan and bulk sample location
Figure 2: Underground development plan and bulk sample location
Figure 2: Underground development plan and bulk sample location

Figure 3: Mosquito Creek select drilling highlights

Figure 3: Mosquito Creek select drilling highlights
Figure 3: Mosquito Creek select drilling highlights
Figure 3: Mosquito Creek select drilling highlights

Figure 4: Shaft Zone select drilling highlights

Figure 4: Shaft Zone select drilling highlights
Figure 4: Shaft Zone select drilling highlights
Figure 4: Shaft Zone select drilling highlights

Figure 5: Shaft Zone select drilling highlights

Figure 5: Shaft Zone select drilling highlights
Figure 5: Shaft Zone select drilling highlights
Figure 5: Shaft Zone select drilling highlights

Figure 6: Shaft Zone select drilling highlights

Figure 6: Shaft Zone select drilling highlights
Figure 6: Shaft Zone select drilling highlights
Figure 6: Shaft Zone select drilling highlights

MONTREAL, July 21, 2021 (GLOBE NEWSWIRE) -- Osisko Development Corp. (“Osisko Development” or the “Company”) (TSX.V-ODV) is pleased to announce the receipt of the Notice of Work permit to commence development to collect an underground bulk sample at its Cariboo Gold Project (“Cariboo” or “Project”) in central British Columbia and conduct underground diamond drilling.

Also, the Company is reporting additional drilling results from the 200,000-meter 2021 exploration and category conversion drill program campaign. A total of ten diamond drill rigs are currently on the Project.

Highlights

  • A 10,000 tonnes bulk sample will be collected on the Cow Mountain deposit (Figure 1).

  • A total of 2,200 meters of development is planned (Figure 2).

  • The project is intentionally designed to utilize existing surface disturbance to reduce environmental impact and portal construction is to begin immediately.

  • Underground drill bays on Cow and Lowhee Deposits are part of the development plan to increase exploration and infill drilling.

  • Development will be executed by the Sandvik Roadheader Mt-720 previously tested and commissioned at the Bonanza Ledge operation where promising performance was achieved.

  • The ore extracted in the bulk sample will be processed in a newly purchased Ore Sorter from the company Steinert to further improve confidence of ore sorting technology.

  • A total of 100,000 meters have been drilled thus far in 2021.

  • Recent assay results include holes IM-21-037 to IM-21-068.

  • Drilling highlights include 11.76 g/t Au over 7.4 meters in hole IM-21-037 that intersected a vein corridor on Shaft Zone, open along strike to the south.

  • Exploration hole IM-21-048 on Mosquito Creek tested for vein corridors at depth and intersected mineralized veins with assays including 21.2 g/t Au over 0.50 meters and 25.3 g/t over 0.80 meters at vertical depth of 325 meters.

  • Detailed drilling results and a drill hole location plan map are presented at the end of this release.

Assay Highlights (Figures 3, 4, 5 and 6)

  • 11.76 g/t Au over 7.40 meters in hole IM-21-037 including

  • 63.90 g/t Au over 1.00 meter

  • 47.40 g/t Au over 1.15 meters in hole IM-21-043

  • 6.96 g/t Au over 7.35 meters in hole IM-21-051

  • 21.59 g/t Au over 2.50 meters in hole IM-21-052 including

  • 73.20 g/t Au over 0.65 meters

  • 87.30 g/t Au over 0.70 meters in hole IM-21-053

  • 4.66 g/t Au over 7.40 meters in hole IM-21-060

  • 8.90 g/t Au over 5.60 meters in hole IM-21-062 including

  • 82.00 g/t Au over 0.50 meters

  • 13.27 g/t Au over 2.85 meters in hole IM-21-064

  • 6.73 g/t Au over 5.50 meters in hole IM-21-067

Sean Roosen, CEO of Osisko Development commented, “The commencement of underground development to collect a bulk sample and conduct underground drilling demonstrates the continued advancement of the Cariboo Gold Project. We are now 50% completed on our proposed 200,000 meter infill and expansion diamond drill program for 2021. The infill results within the 2020 Mineral Resource Estimate continue to intersect vein corridors and new veins are being discovered at depth.”

Mineralized quartz veins on Cariboo are overall sub-vertical dip and northeast strike. Vein corridors are defined as a high-density network of mineralized quartz veins within the axis of the last folding event and hosted within a brittle meta-sandstone or calcareous meta-sandstone. Vein corridors are modelled at a minimum thickness of 2 meters and average about 4.5 meters true width. Individual mineralized veins within these corridors have widths varying from centimeters to several meters and strike lengths from a few meters to over 50 meters. These corridors have been defined from surface to a vertical depth averaging 300 meters and remain open for expansion at depth and along strike. Gold grades are intimately associated with quartz vein-hosted pyrite as well as pyritic, intensely silicified wall rock haloes in close proximity to the veins.

True widths are estimated to be 60% to 75% of reported core length intervals. Intervals not recovered by drilling were assigned zero grade. Top cuts have not been applied to high grade assays. Complete assay highlights are presented in Table 1, drill hole locations are listed in Table 2.

Figure 1: Cariboo deposit areas overview map
https://www.globenewswire.com/NewsRoom/AttachmentNg/ca5283a8-331a-4e5d-b135-711be3bffa18

Figure 2: Underground development plan and bulk sample location
https://www.globenewswire.com/NewsRoom/AttachmentNg/1a645d0d-4749-4ef9-8ed5-19cf44795167

Figure 3: Mosquito Creek select drilling highlights.
https://www.globenewswire.com/NewsRoom/AttachmentNg/73dd9b5b-165a-4d41-9115-98a5828aa80e

Figure 4: Shaft Zone select drilling highlights.
https://www.globenewswire.com/NewsRoom/AttachmentNg/47a737fa-ba1f-447b-bcad-97b2e3695d6e

Figure 5: Shaft Zone select drilling highlights.
https://www.globenewswire.com/NewsRoom/AttachmentNg/3537dcc3-e79b-44a7-b21d-ddb8d85952a6

Figure 6: Shaft Zone select drilling highlights.
https://www.globenewswire.com/NewsRoom/AttachmentNg/ae42a635-1190-4074-b893-39fc91e3912b

Qualified Persons

Per National Instrument 43-101 Standards of Disclosure for Mineral Projects, Maggie Layman, P.Geo. Vice President Exploration of Osisko Development Corp., is a Qualified Person and has prepared, validated, and approved the technical and scientific content of this news release.

Quality Assurance – Quality Control

Once received from the drill and processed, all drill core samples are sawn in half, labelled and bagged. The remaining drill core is subsequently stored on site at a secured facility in Wells, BC. Numbered security tags are applied to lab shipments for chain of custody requirements. Quality control (QC) samples are inserted at regular intervals in the sample stream, including blanks and reference materials with all sample shipments to monitor laboratory performance. The QAQC program was designed and approved by Lynda Bloom, P.Geo. of Analytical Solutions Ltd.

Drill core samples are submitted to ALS Geochemistry’s analytical facility in North Vancouver, British Columbia for preparation and analysis. The ALS facility is accredited to the ISO/IEC 17025 standard for gold assays and all analytical methods include quality control materials at set frequencies with established data acceptance criteria. The entire sample is crushed, and 250 grams is pulverized. Analysis for gold is by 50g fire assay fusion with atomic absorption (AAS) finish with a lower limit of 0.01 ppm and upper limit of 100 ppm. Samples with gold assays greater than 100 ppm are re-analyzed using a 1,000g screen metallic fire assay. A selected number of samples are also analyzed using a 48 multi-elemental geochemical package by a 4-acid digestion, followed by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) and Inductively Coupled Plasma Mass Spectroscopy (ICP-MS).

About Osisko Development Corp.

Osisko Development Corp. is well-capitalized and uniquely positioned as a premier gold development company in North America to advance the Cariboo Gold Project and other Canadian and Mexican properties, with the objective of becoming the next mid-tier gold producer. The Cariboo Gold Project, located in central British Columbia, is Osisko Development's flagship asset with measured and indicated resources of 21.44 Mt at 4.6 Au g/t for a total of 3.2 million ounces of gold and inferred resource of 21.69 Mt at 3.9 Au g/t for a total of 2.7 million ounces of gold (see NI 43-101 Technical Report for resource October 5th, 2020). The considerable exploration potential at depth and along strike distinguishes the Cariboo Gold Project relative to other development assets as does the historically low, all-in discovery costs of US $19 per ounce. The Cariboo Gold Project is advancing through permitting as a 4,750 tonnes per day underground operation with a feasibility study on track for completion in the second half of 2021. Osisko Development's project pipeline is complemented by potential near-term production targeted from the San Antonio gold project, located in Sonora Mexico and early exploration stage properties including the Coulon Project and James Bay Properties located in Québec as well as the Guerrero Properties located in Mexico. Osisko Development began trading on the TSX Venture Exchange under the symbol "ODV" on December 2, 2020.

For further information, please contact Osisko Development Corp.:

Jean Francois Lemonde
VP Investor Relations
jflemonde@osiskodev.com
Tel: 514-299-4926

Forward-looking Statements

Certain statements contained in this press release may be deemed “forwardlooking statements” within the meaning of applicable Canadian and U.S. securities laws. These forwardlooking statements, by their nature, require Osisko Development to make certain assumptions and necessarily involve known and unknown risks and uncertainties that could cause actual results to differ materially from those expressed or implied in these forwardlooking statements. Forwardlooking statements are not guarantees of performance. Words such as “may”, “will”, “would”, “could”, “expect”, “believe”, “plan”, “anticipate”, “intend”, “estimate”, “continue”, or the negative or comparable terminology, as well as terms usually used in the future and the conditional, are intended to identify forwardlooking statements. Information contained in forwardlooking statements is based upon certain material assumptions that were applied in drawing a conclusion or making a forecast or projection, including management’s perceptions of historical trends, current conditions and expected future developments, including with respect to the projected underground development and the results from the processing of the bulk sample with the Ore Sorter, results of further exploration work to define and expand mineral resources, expected conclusions of optimization studies, that vein corridors continue to be defined as a high-density network of mineralized quartz within the axis of the last folding event and hosted within the sandstones and that the deposit remains open for expansion at depth and down plunge, as well as other considerations that are believed to be appropriate in the circumstances. Osisko Development considers its assumptions to be reasonable based on information currently available, but cautions the reader that their assumptions regarding future events, many of which are beyond the control of Osisko Development, may ultimately prove to be incorrect since they are subject to risks and uncertainties that affect Osisko Development and its business. Such risks and uncertainties include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management’s geological modelling; the ability of to complete further exploration activities, including drilling; property and royalty interests in the Cariboo gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions and the responses of relevant governments to the COVID-19 outbreak and the effectiveness of such responses.

For additional information with respect to these and other factors and assumptions underlying the forwardlooking statements made in this news release concerning Osisko Development, see the Filing Statement available electronically on SEDAR (www.sedar.com) under Osisko Development's issuer profile. The forwardlooking statements set forth herein concerning Osisko Development reflect management's expectations as at the date of this news release and are subject to change after such date. Osisko Development disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, other than as required by law.

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 news release. No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein.

Table 1: Cariboo Gold Project 2021 Length Weighted Drill Hole Gold Composites

HOLE ID

FROM M

TO (M)

LENGTH (M)

AU G/T

TARGET

IM-21-037

41.05

42.05

1.00

6.64

Shaft

Including

41.55

42.05

0.50

11.20

47.00

48.00

1.00

7.26

72.00

76.30

4.30

4.11

Including

74.35

75.00

0.65

16.40

272.10

279.50

7.40

11.76

Including

277.65

278.50

0.85

22.30

and

278.50

279.50

1.00

63.90

312.20

316.30

4.10

3.85

Including

312.20

312.90

0.70

19.95

322.20

325.25

3.05

5.52

IM-21-038

33.00

34.00

1.00

3.71

Shaft

IM-21-039

No Significant Assays

Mosquito

IM-21-040

85.25

85.75

0.50

5.68

Mosquito

135.20

135.70

0.50

20.00

172.75

176.15

3.40

8.50

Including

174.70

175.65

0.95

15.75

208.60

209.50

0.90

7.53

258.10

258.70

0.60

17.35

289.30

289.80

0.50

19.75

342.50

346.50

4.00

4.60

Including

342.50

343.00

0.50

25.60

and

343.60

344.10

0.50

8.25

351.00

351.50

0.50

14.75

410.90

411.70

0.80

6.60

439.50

440.00

0.50

6.58

IM-21-041

112.90

113.60

0.70

6.71

Shaft

160.50

161.15

0.65

5.23

274.25

274.75

0.50

4.33

300.00

300.70

0.70

3.10

303.00

304.10

1.10

5.24

IM-21-042

302.00

305.05

3.05

2.87

Shaft

Including

304.40

305.05

0.65

6.99

318.00

318.65

0.65

20.80

322.35

323.50

1.15

3.67

325.90

329.50

3.60

4.08

Including

326.50

327.00

0.50

8.43

and

329.00

329.50

0.50

6.59

388.60

389.25

0.65

4.40

IM-21-043

100.50

101.65

1.15

47.40

Shaft

110.00

111.50

1.50

12.20

Including

110.00

110.90

0.90

19.50

IM-21-044

No Significant Assays

IM-21-045

91.75

92.30

0.55

3.40

Shaft

95.00

97.00

2.00

7.67

Including

95.00

96.00

1.00

14.25

339.50

343.80

4.30

4.11

Including

339.50

340.00

0.50

20.20

and

343.30

343.80

0.50

12.25

IM-21-046

62.00

62.50

0.50

5.51

Shaft

80.55

81.20

0.65

17.30

IM-21-047

27.15

27.65

0.50

3.63

Shaft

88.70

91.10

2.40

5.63

Including

90.00

91.10

1.10

10.20

IM-21-048

121.20

122.80

1.60

5.70

Mosquito

185.20

187.40

2.20

6.36

Including

185.20

186.30

1.10

11.25

224.25

226.70

2.45

4.93

275.30

275.80

0.50

10.95

418.75

419.25

0.50

21.20

422.60

423.40

0.80

3.53

427.35

427.85

0.50

11.20

432.00

432.50

0.50

3.50

434.65

435.35

0.70

11.00

437.70

438.50

0.80

25.30

488.00

488.50

0.50

3.13

536.50

537.10

0.60

4.55

IM-21-049

28.25

28.75

0.50

3.97

Shaft

32.00

32.50

0.50

5.84

IM-21-050

No Significant Assays

IM-21-051

149.90

151.00

1.10

10.20

Shaft

168.15

175.50

7.35

6.96

Including

168.15

168.85

0.70

36.00

and

173.15

174.65

1.50

15.55

227.20

227.70

0.50

10.75

IM-21-052

249.00

251.50

2.50

21.59

Shaft

Including

249.70

250.30

0.60

9.45

and

250.30

250.95

0.65

73.20

328.15

328.65

0.50

12.75

363.45

364.95

1.50

4.67

Including

363.45

363.95

0.50

10.05

IM-21-053

29.55

31.30

1.75

4.51

Shaft

Including

30.80

31.30

0.50

12.90

54.30

55.00

0.70

87.30

194.15

194.70

0.55

9.01

200.00

200.65

0.65

10.90

228.50

232.50

4.00

5.00

Including

231.50

232.00

0.50

11.30

and

232.00

232.50

0.50

12.35

IM-21-054

40.70

42.00

1.30

5.15

Shaft

122.40

123.40

1.00

11.50

176.00

176.50

0.50

8.54

IM-21-055

72.50

74.00

1.50

4.45

Shaft

IM-21-056

159.60

160.20

0.60

4.26

Shaft

IM-21-057

39.00

40.00

1.00

4.46

Shaft

109.00

109.70

0.70

5.46

IM-21-058

195.15

196.30

1.15

5.35

Shaft

260.50

262.50

2.00

13.92

Including

261.95

262.50

0.55

43.50

IM-21-059

24.00

25.00

1.00

7.82

Shaft

157.35

157.85

0.50

11.00

IM-21-060

29.00

30.50

1.50

4.09

Shaft

92.10

99.50

7.40

4.66

Including

92.10

93.20

1.10

7.57

and

95.40

96.00

0.60

15.75

and

96.00

96.50

0.50

8.12

and

99.00

99.50

0.50

9.01

105.20

106.30

1.10

22.00

182.00

183.50

1.50

6.79

Including

183.00

183.50

0.50

14.40

IM-21-061

147.50

148.10

0.60

6.66

Mosquito

IM-21-062

181.40

182.70

1.30

11.20

Shaft

311.80

317.40

5.60

8.90

Including

311.80

312.30

0.50

82.00

IM-21-063

20.50

22.10

1.60

15.72

Shaft

Including

21.60

22.10

0.50

46.90

28.00

28.65

0.65

7.55

318.00

318.65

0.65

6.49

330.95

331.95

1.00

6.35

IM-21-064

108.70

109.20

0.50

11.40

Shaft

163.80

166.65

2.85

13.27

Including

163.80

165.15

1.35

15.45

and

166.15

166.65

0.50

33.90

IM-21-065

Hole Abandoned

Mosquito

IM-21-066

183.90

188.10

4.20

5.59

Shaft

Including

183.90

184.40

0.50

7.05

and

186.90

187.50

0.60

24.90

227.75

228.25

0.50

12.45

249.80

250.30

0.50

57.40

IM-21-067

120.00

125.50

5.50

6.73

Shaft

Including

120.00

120.60

0.60

21.80

and

123.75

125.00

1.25

15.10

197.50

198.00

0.50

7.06

IM-21-068

70.15

71.20

1.05

6.43

Mosquito

99.00

102.50

3.50

6.49

Including

99.00

99.50

0.50

10.05

and

102.00

102.50

0.50

11.15

262.50

263.60

1.10

12.27

Table 2: Drill Hole Locations and Orientations

HOLE ID

EASTING

NORTHING

ELEV

DIP

AZI

DEPTH (M)

IM-21-037

594913

5884185

1293

-64

145

348

IM-21-038

594383

5884721

1392

-60

119

264

IM-21-039

593690

5885199

1396

-46

118

324

IM-21-040

593945

5884991

1380

-44

322

516

IM-21-041

594291

5884713

1407

-47

127

315

IM-21-042

594986

5884348

1303

-49

148

504

IM-21-043

594383

5884722

1391

-60

118

173

IM-21-044

593689

5885197

1395

-49

121

309

IM-21-045

594382

5884721

1394

-65

142

357

IM-21-046

594291

5884713

1407

-56

121

369

IM-21-047

594456

5884340

1438

-51

316

154

IM-21-048

593945

5884993

1379

-48

321

567

IM-21-049

594455

5884340

1437

-57

321

213

IM-21-050

594384

5884722

1392

-55

111

225

IM-21-051

594455

5884339

1434

-46

326

243

IM-21-052

594986

5884349

1301

-45

135

504

IM-21-053

594290

5884715

1408

-54

110

357

IM-21-054

594455

5884338

1436

-67

328

180

IM-21-055

594384

5884721

1392

-52

133

216

IM-21-056

594455

5884340

1435

-56

305

192

IM-21-057

594455

5884338

1436

-68

305

192

IM-21-058

594384

5884722

1396

-56

137

287

IM-21-059

594249

5884689

1415

-46

134

219

IM-21-060

594473

5884351

1430

-70

325

234

IM-21-061

593943

5884990

1379

-53

294

198

IM-21-062

594985

5884348

1302

-45

153

324

IM-21-063

594249

5884690

1415

-52

133

468

IM-21-064

594473

5884351

1430

-56

325

171

IM-21-065

593909

5885012

1369

-48

282

93

IM-21-066

594384

5884722

1394

-60

143

261

IM-21-067

594474

5884351

1430

-60

330

201

IM-21-068

593910

5885015

1369

-45

303

339