Bluestone Resources (BSR-V) Additional Drill Results including 28.6 metres grading 11.6 g/t Gold and 217.6 metres grading 1.4 g/t Gold
May 4th 2021 - NR
Bluestone Resources is pleased to report additional drill assays from the infill drill program completed in the South Zone of the Cerro Blanco gold project in late 2020. Results from three underground holes and thirteen surface holes are reported in this press release, totalling 4,493 meters.
Highlights include the following drilled intercepts:
28.6 meters grading 11.6 g/t Au and 11.7 g/t Ag (CB20-442)
217.6 meters grading 1.4 g/t Au and 5.6 g/t Ag (CB20-433)
111.8 meters grading 2.1 g/t Au and 12.5 g/t Ag (CB20-444)
114.9 meters grading 2.5 g/t Au and 13.4 g/t Ag (CB20-449)
101.4 meters grading 2.4 g/t Au and 9.7 g/t Ag (UGCB20-191)
21.2 meters grading 11.2 g/t Au and 11.7 g/t Ag (CB20-443) The holes reported include significant widths of near surface mineralization within the Salinas unit, and underlying Mita sediments and tuffs, which host the majority of the high-grade epithermal vein swarms. Drilling is currently focused on mineralization within the upper portion of the deposit to improve drill density and better define limits of the mineralization.
Jack Lundin, President and CEO, commented, "As anticipated, the South Zone continues to yield +100-meter intervals at over 2 g/t gold near surface. Combined with the impressive widths of high-grade vein mineralization deeper in the deposit, these unique attributes to Cerro Blanco create an asset capable of producing over 300,000 oz Au per year. The drill results will be incorporated into an updated resource estimate that will form the basis of our ongoing Feasibility Study which is progressing on schedule."
Assay results include infill sampling of mineralized wall rocks, and compliment assay results for individual veins reported previously for some holes (see news releases dated February 16, 2021 and March 18, 2021). High-grade intervals reported in holes CB20-442 and CB20-443 (11.6 g/t Au over 28.6 meters and 11.2 g/t Au over 21.2 meters respectively) represent approximate true widths and incorporate vein VS_01 and associated splay vein VS_21.
Assays for several holes are still being received and compiled, in addition to holes currently being drilled that are targeting mineralization in the Salinas unit.
Drill hole locations, sections, and core photos can be accessed by clicking HERE.
Table of Drill Intercepts and Assays
HOLE ID
| PREVIOUSLY
REPORTED
| FROM (m)
| TO (m)
| CORE INTERVAL
(m)
| Au g/t
| Ag g/t
| CB20-432
| *
| 64.0
| 161.9
| 97.9
| 0.9
| 4.6
| CB20-433
| *
| 75.6
| 293.2
| 217.6
| 1.4
| 5.6
| CB20-437
| *
| 75.3
| 147.0
| 71.7
| 1.4
| 5.0
| CB20-438
| *
| 61.2
| 86.6
| 25.4
| 0.9
| 4.7
| CB20-439
|
| 70.4
| 134.1
| 63.7
| 0.8
| 4.6
| CB20-440
|
| 210.9
| 212.2
| 1.3
| 6.7
| 1.5
|
|
| 281.8
| 306.6
| 24.9
| 1.5
| 4.3
| CB20-442
| *
| 58.2
| 166.7
| 108.5
| 0.9
| 4.9
|
|
| 182.0
| 253.5
| 71.5
| 1.5
| 1.9
|
|
| 263.5
| 292.1
| 28.6
| 11.6
| 12.3
| CB20-443
|
| 77.7
| 173.3
| 95.6
| 1.0
| 4.8
|
|
| 204.2
| 217.0
| 12.8
| 0.7
| 1.0
|
|
| 293.1
| 314.3
| 21.2
| 11.2
| 11.7
| CB20-444
| *
| 54.6
| 166.3
| 111.8
| 2.1
| 12.5
| CB20-445
| *
| 0.0
| 12.2
| 12.2
| 0.5
| 2.7
|
|
| 85.0
| 151.5
| 66.5
| 1.2
| 5.2
| CB20-446
|
| 74.7
| 134.8
| 60.1
| 0.9
| 5.5
|
|
| 190.2
| 199.8
| 9.6
| 0.5
| 0.5
|
|
| 333.8
| 349.4
| 15.6
| 2.0
| 18.9
| CB20-449
| *
| 43.3
| 158.2
| 114.9
| 2.5
| 13.4
| CB20-450
|
| 92.7
| 240.8
| 148.2
| 0.6
| 9.7
|
|
| 308.0
| 314.3
| 6.3
| 8.2
| 16.9
| UGCB20-189
| *
| 34.7
| 96.6
| 61.9
| 2.8
| 14.8
|
|
| 122.9
| 154.7
| 31.7
| 0.5
| 2.3
| UGCB20-190
| *
| 0.0
| 80.9
| 80.9
| 0.8
| 4.9
|
|
| 122.5
| 145.4
| 22.9
| 0.8
| 5.0
|
|
| 168.4
| 185.0
| 16.6
| 1.1
| 2.0
| UGCB20-191
| *
| 24.8
| 126.2
| 101.4
| 2.4
| 9.6
|
Intervals in bold are cited in the text of the news release. A drill hole location plan table with hole coordinates and azimuth/ dip information is attached to this release. * denotes drill hole with high-grade assay results for individual veins previously reported (see Bluestone news releases dated February 16, 2021 and March 18, 2021).
|
Quality Analysis and Quality Control
Assay results listed within this release were performed by Inspectorate Laboratories ("Inspectorate"), a division of Bureau Veritas, which are ISO 17025 accredited laboratories. Logging and sampling are undertaken on site at Cerro Blanco by Company personnel under a QA/QC protocol developed by Bluestone. Samples are transported in security-sealed bags to Inspectorate Labs in Managua, Nicaragua for sample preparation. Sample pulps are then shipped to Inspectorate in Hermosillo, Mexico, and assayed using industry-standard assay techniques for gold and silver. Gold and silver were analyzed by a 30-gram charge with atomic absorption and/or gravimetric finish for values exceeding 5 g/t Au and 100 g/t Ag. Analytical accuracy and precision are monitored by the analysis of reagent blanks, reference material, and replicate samples. Quality control is further assured by Bluestone's QA/QC program, which involves the insertion of blind certified reference materials (standards) and field duplicates into the sample stream to independently assess analytical precision and accuracy of each batch of samples as they are received from the laboratory. A selection of samples is submitted to ALS Chemex Laboratories in Vancouver for check analysis and additional quality control.
Qualified Person
David Cass, P.Geo., Vice President Exploration, is the designated Qualified Person for this news release within the meaning of National Instrument 43-101 and has reviewed and verified that the scientific and technical information set out above in this news release is accurate and therefore approves this written disclosure of the technical information.
About Bluestone Resources
The Cerro Blanco Gold Project is an advanced stage near surface development project. A PEA on the project highlighted an asset capable of producing over 300 koz/yr with an average annual production of 231 koz/yr at all-in sustaining costs of ~$642/oz (as defined per World Gold Council guidelines, less corporate general and administration costs) over an initial 11-year mine life. The Company trades under the symbol "BSR" on the TSX Venture Exchange and "BBSRF" on the OTCQB.
On Behalf of Bluestone Resources Inc.
"Jack Lundin"
Jack Lundin | President, Chief Executive Officer & Director |
