Golden Minerals Extends Gold Mineralization at Sarita Este Prospect in Argentina

2022-12-15 04:53:52

GOLDEN, Colo. / Dec 15, 2022 / Business Wire / Golden Minerals Company (“Golden Minerals,” “Golden” or the “Company”) (NYSE-A: AUMN and TSX: AUMN) is pleased to announce assay results from 31 holes of a diamond drilling (“DD”) program recently completed at its Sarita Este property in Salta Province, Argentina.

The Company has now received the remaining assay results for 12 DD holes completed in June and all assays from 19 DD holes drilled recently, totaling 1,825 meters (“m”). This third phase drill program followed up on the positive results obtained at the ‘Sico’ epithermal target drilled in 2021 and 2022 as part of an option agreement with Cascadero Copper Corp. (“CCD”). Drill results for 2021 were reported on January 19, 2022, and partial drill results for the second phase DD holes were reported on August 3, 2022. The recent DD campaign was completed in early October 2022. Highlights from the latest 31 DD holes drilled in the Sico epithermal targets include:

  • 16.3m @ 1.56 g/t Au and 6.0 g/t Ag from 12m, including 2.8m @ 3.04g/t Au and 8.5 g/t Ag

  • 12.5m @ 2.11 g/t Au and 2.5 g/t Ag from 23.5m, including 1.5m @ 10.29 g/t Au and 2.7 g/t Ag
  • 15.8m @ 2.76g/t Au and 0.8 g/t Ag from 32.5m, including 4.3m @ 8.39 g/t Au and 2.3 g/t Ag
  • 9.5m @ 2.39 g/t Au and 5.6 g/t Ag from 40.5m, including 3.5m @ 4.84 g/t Au and 11.2 g/t Ag
  • 6.3m @ 4.38 g/t Au and 7.5 g/t Ag from 0m, including 2.5m @ 9.14 g/t Au and 11.7 g/t
  • 12.8m @ 1.68 g/t Au and 6.2 g/t Ag from 7.0m
  • 2.5m @ 3.98g/t Au and 4.3g/t Ag from 28.5m

The recent results confirm the mineralization at Sico is concentrated on the eastern flank of the prospect, and the drilling to date has intercepted a mineralized footprint of approximately 300m x 120m with potential to expand in multiple directions. Current observations suggest the mineralization trend is heading northeast and west-southwest of the discovery section (SE21008 & SE22011). The Company has planned a follow up drilling campaign to test the trend of the mineralization, to follow up on the open trends, and to increase the size of the mineralized zone as well as to test targets to the north. Recent trenching to the north of the Sico prospect has uncovered quartz-hematite veins which appear mineralized and which have been sampled and sent for analysis.

Mineralization at Sico is hosted in near-surface iron-oxide bearing veins, veinlets and fractures within Tertiary volcanic rocks. Recently completed testing for cyanide extractability of gold shows excellent recoveries averaging 89%. The prospect lies approximately 3km southwest of the Taca Taca copper porphyry deposit (owned by First Quantum Minerals) and 55km directly north of the currently producing Lindero gold mine (owned by Fortuna Silver). The mineralization at the Sarita Este prospect extends south onto the Desierto I & II concessions (2,498 hectares) where Golden is a controlling shareholder with an agreement in place to form a JV with Cascadero Copper.

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Significant results are summarized in the tables below, with complete results available on the Company website at Golden Minerals – Sarita Este Property.















































Table 1 : Significant results drilled at Sico epithermal target 

 
Hole ID From (m) To (m) Interval (m) Au (g/t) Ag (g/t)
SE22021

12.0

28.3

16.3

1.56

6.0

including 

15.0

21.0

6.0

2.01

6.2

including 

25.5

28.3

2.8

3.04

8.5

SE22022

0.0

2.6

2.6

1.25

2.2

SE22022

21.0

31.2

10.2

1.05

1.7

including 

26.9

29.9

3.0

1.90

2.0

SE22023

23.0

25.5

2.5

1.38

2.1

SE22024

No significant results

SE22025

No significant results

SE22026

No significant results

SE22027

No significant results

SE22028

No significant results

SE22029

No significant results

SE22030

No significant results

SE22031

No significant results

SE22032

No significant results

SE22033

46.5

49.9

3.4

1.26

0.3

SE22034

No Significant Results

SE22035

23.5

36.0

12.5

2.11

2.5

including

23.5

25.0

1.5

10.29

2.7

SE22036

5.4

10.3

4.9

1.47

1.5

SE22037

No Significant Results

SE22038

32.5

48.3

15.8

2.76

0.8

including

44.0

48.3

4.3

8.39

2.3

SE22039

21.7

25.5

3.8

1.26

0.3

SE22040

34.0

37.3

3.3

0.77

2.5

SE22041

40.5

50.0

9.5

2.39

5.6

including

40.5

44.0

3.5

4.84

11.2

SE22042

0.0

6.3

6.3

4.38

7.5

including

3.0

5.5

2.5

9.14

11.7

SE22043

7.0

19.8

12.8

1.68

6.2

and

28.5

31.0

2.5

3.98

4.4

and

50.5

51.6

1.1

3.97

3.6

SE22044

59.0

62.1

3.1

1.22

0.4

SE22045

No Significant Results

SE22046

44.0

45.0

1.0

2.20

3.4

SE22047

No Significant Results

SE22048

No Significant Results

SE22049

7.5

8.5

1.0

1.27

0.3

SE22050

No Significant Results

SE22051

No Significant Results

Note: Intervals in the table represent drilled length. Intervals and grades have been rounded to either one or two decimal places. Columns may not total due to rounding.

Table 2: Drill hole collar locations





































Hole ID Easting Northing Elevation (m) Azimuth Inclination Length (m)

SE22021

2625614

7280664

3558

0

-60

51

SE22022

2625513

7280670

3570

0

-60

46

SE22023

2625464

7280708

3571

0

-60

51

SE22024

2625327

7280726

3581

0

-60

60

SE22025

2625412

7280675

3580

0

-60

60

SE22026

2625358

7280658

3584

0

-60

54

SE22027

2625253

7280661

3590

0

-60

70.5

SE22028

2625302

7280676

3582

0

-60

60

SE22029

2625355

7280583

3594

315

-60

51

SE22030

2625195

7280585

3588

90

-60

51

SE22031

2625191

7280635

3587

90

-60

51

SE22032

2624933

7280772

3610

45

-60

99

SE22033

2625756

7280672

3567

0

-60

60

SE22034

2625636

7280592

3559

135

-60

51.1

SE22035

2625596

7280651

3561

0

-60

61

SE22036

2625592

7280698

3559

0

-60

50.7

SE22037

2625462

7280653

3575

0

-60

30.1

SE22038

2625518

7280644

3568

0

-60

60

SE22039

2625550

7280649

3564

0

-60

50.3

SE22040

2625627

7280632

3557

45

-60

51.1

SE22041

2625639

7280647

3557

0

-60

61.5

SE22042

2625640

7280698

3561

0

-60

51

SE22043

2625675

7280683

3565

0

-60

61

SE22044

2625655

7280617

3555

0

-60

100.5

SE22045

2625705

7280620

3564

0

-60

50

SE22046

2625705

7280619

3564

135

-60

52.5

SE22047

2625794

7280603

3571

45

-60

60.2

SE22048

2625678

7280636

3563

0

-60

51

SE22049

2625808

7280671

3569

0

-60

58.3

SE22050

2625653

7280618

3555

45

-60

59.9

SE22051

2624541

7280754

3642

90

-60

100.5

 

Coordinates are in POSGAR 94 zone Argentina 2

“The results for the latest drill campaign at Sico have continued to show encouraging results and evidence for the potential of an economic, near-surface oxide gold deposit. Initial metallurgical testing shows excellent results for cyanide extractability. The next phase of drilling will concentrate on expanding the known mineralization and continuing to test targets to the north, while the JV agreement for the Desierto I & II concessions is finalized,” said Warren Rehn, President and Chief Executive Officer of Golden Minerals.

About Sarita Este

Sarita Este is a gold-silver prospect located in the Puna region in Salta Province, north-west Argentina. The property is 100% owned by CCD through its subsidiary Salta Geothermal S.A. Golden Minerals is conducting exploration activities at Sarita Este as a part of a 2019 option agreement whereby it can acquire 51% of the 830-hectare property by spending $2.5M over four years and forming a JV with CCD. Golden has met the earn-in requirements and will proceed with forming the joint venture with CCD as specified in the option agreement.

Review by Qualified Person and Quality Control

The technical contents of this press release have been reviewed by Aaron Amoroso, a Qualified Person for the purposes of NI 43-101. Mr. Amoroso has over 15 years of mineral exploration experience and is a Qualified Professional member of the Mining & Metallurgical Society of America (QP Geology & Ore Reserves, 01548QP).

To ensure reliable sample results, Golden Minerals uses a quality assurance/quality control program that monitors the chain of custody of samples and includes the insertion of blanks, duplicates, and reference standards in each batch of samples.

Sampling Protocols

DD drilling was conducted with a CSD 1800 diamond drill rig provided by Eco Drilling S.A. Holes were drilled at azimuths ranging from 0 to 315 degrees and a dip of -60 degrees. Drill holes were drilled to depths ranging from 30.1m to 100.5m. Local fresh water was used to flush, condition and recirculate within the holes. Holes were positioned with a hand-held GPS (accuracy +/- 5 meters) and will be surveyed with a Differential GPS once the campaign is completed. Sampling was conducted by qualified field assistants under the supervision of a geologist. The drilled core was photographed, measured, marked and cut into half and quarter core samples in lengths ranging from 30 centimeters to 2 meters. Diamond core was collected from the drill rig and logged by a geologist on-site at the core shack.

The Company has recently contracted the services of Alex Stewart International laboratories to keep all sample preparation and analysis within Argentina and avoid extended turnaround times. Analytical procedures for both laboratories used to analyze the drill core reported are explained below.

Alex Stewart International

Drill-core was shipped to Alex Stewart International’s sample preparation and analytical facility in Maipu, Mendoza, Argentina for sample preparation for gold and multielement analysis. The Alex Stewart International facility is ISO 9001 and ISO/IEC 17025 certified.

The samples were crushed to 80% passing 2mm, #10 mesh (P5), split to 600g and pulverized to 95% passing 106 microns. Pulps (30gram split) were submitted for Au analysis by Fire Assay with Atomic Absorption finish (Au4-30) and silver samples were analyzed by Four Acid Digestion and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-MA 39).

Over-limit Au and Ag samples were analyzed by Fire Assay with Gravimetric finish (Au4A-50, Ag4A-50). Base metals were analyzed by Four Acid Digestion followed by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Cu over-limit samples were analyzed by Four Acid Digestion and Atomic Absorption finish (CU-GMA-AAS-100ml).

ALS Chemex

Drill-core was shipped to ALS Chemex’s sample preparation facility in Godoy Cruz, Mendoza, Argentina for sample preparation and for analysis at the ALS laboratory in Lima, Peru. The ALS Mendoza and Lima facilities are ISO 9001 and ISO/IEC 17025 certified.

The samples were crushed to 70% passing 2mm (PREP-31) and a split of up to 250 grams pulverized to 85% passing 75 micrometers (-200 mesh). The sample pulps and crushed splits were transferred internally to ALS Global’s Lima, Peru analytical facility for gold and multi-element analysis. Pulps (30-gram split) are submitted for Au analysis by Fire Assay with Atomic Absorption finish (Au-AA23) and silver samples were analyzed by an atomic absorption (Ag-AA62).

Over-limit Au and Ag samples are analyzed by Fire Assay with Gravimetric Finish Ore Grade (Au-GRA21 and Ag-GRA22). Overlimit base metals are analyzed by Four Acid Digestion followed by Ore Grade Inductively Coupled Plasma Atomic Emission Spectrometry for Cu, Pb and Zn (Cu-OG62, Pb-OG62, Zn-OG62).

Cyanide leach Au samples are analyzed via a cyanide leach of a 30-gram pulp finished with atomic absorption (Au-AA13). Fire assay results are assumed to represent 100% extraction potential. To calculate the cyanide leach extraction potential the fire assay results (Au-AA23) and the cyanide leach assay (Au-AA13) results were compared and displayed as a percentage.

Quality Assurance/Quality Control

In-house quality control samples (blanks, standards, duplicates, preparation duplicates) were inserted into the sample set by Golden Minerals. Both laboratories conduct their own internal QA/QC program of blanks, standards and duplicates, and the results were provided with the Company sample certificates. The results of the control samples were reviewed by Golden Minerals and the Company’s QP and evaluated for acceptable tolerances.

All sample and pulp rejects are stored at the Company’s secure warehouse in El Quevar, Salta province, Argentina pending full review of the analytical data, and future selection of pulps for independent third-party check analyses, if required.

About Golden Minerals

Golden Minerals is a growing gold and silver producer based in Golden, Colorado. The Company is primarily focused on producing gold and silver from its Rodeo Mine and advancing its Velardeña Properties in Mexico and, through partner funded exploration, its El Quevar silver property in Argentina, as well as acquiring and advancing selected mining properties in Mexico, Nevada and Argentina.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended, and applicable Canadian securities legislation, including statements regarding the Company’s plans to conduct a follow-up drilling campaign on the Sarita Este property; the potential of an economic, near-surface oxide gold deposit at the Sico epithermal target, and the Company’s plans to enter into a JV agreement with CCD. These statements are subject to risks and uncertainties, including changes in interpretations of geological, geostatistical, metallurgical, mining or processing information, availability of sufficient capital, risks associated with operating in Argentina, and commodity price fluctuations. Golden Minerals assumes no obligation to update this information. Additional risks relating to Golden Minerals may be found in the periodic and current reports filed with the SEC by Golden Minerals, including the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

For additional information please visit http://www.goldenminerals.com/.


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