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Golden Queen Announces Final Drill Assays from the 2018 Main Pit 2 Infill Drilling Program and April Production Results

17.05.2018  |  CNW

VANCOUVER, May 17, 2018 /CNW/ - Golden Queen Mining Co. Ltd. (TSX:GQM; OTCQX:GQMNF) (the "Company" or "Golden Queen") is pleased to announce drill results for nine (9) additional holes at its 50%-owned Soledad Mountain gold-silver mine (the "Mine") located south of Mojave, California. 

The drill results are part of the Company's recently completed 2018 Main Pit 2 Infill Drilling program. (See releases dated April 3, 2018 and April 19,, 2018 for complete results.) The completed holes GQ-836 through GQ-844 continue to be successful in intersecting and geologically verifying existing shallow mineralized zones in and around the currently mined East Pit, and also continue to be successful in exploring for and intersecting deeper mineralized zones. In some cases, new mineralized zones have potentially been identified.

Each hole listed in the table below has intersected strong alteration envelopes and locally significant gold/silver mineralization associated with the Patience, Independence, Queen Esther and Main Fault zones, and has continued to encounter the Silver Queen target beneath the East Pit and at shallower levels adjacent to the East Pit.

Several key features have been observed in the drill cuttings from this group of nine (9) holes and, in fact, these features have largely been observed in most drill holes from this program:

  • Several unnamed or unknown mineralized zones continue to be intersected in most holes drilled from the East Pit, usually situated between the Patience and Queen Esther zones and/or between the Queen Esther and Silver Queen zones. Previous interpretive work has concluded that these zones may be subparallel to the Queen Esther zone, may be relatively flat-lying, and locally carry significant gold and silver grades (see accompanying table, in particular holes GQ-836, GQ-837 and GQ-838). Further work and interpretation must be completed to determine whether the gold/silver grades encountered so far in these structures show continuity from section to section. It is worthy to note that the current drilling program was designed to explore new areas around the Queen Esther and Silver Queen veins for potential ore zones that may expand the current pit design;

  • A potentially new style of mineralization at Soledad Mountain, first mentioned in the previous press release of April 19, 2018, has continued to be observed from several drill holes in this final series of assays, specifically in holes GQ-836 and GQ-838. This mineralization appears to be associated with the contact between porphyritic rhyolite dikes and small plugs (rock unit Trp) with the pyroclastic volcanic country rock (rock unit Tmp). Quartz veinlet and stock work zones are hosted by the pyroclastic rocks with mineralization ranging from 5 to 20+ feet outward from the rhyolite dike contact. Further interpretive work is required to determine if this "new" mineralization is volumetrically significant, or if it represents a local phenomenon.

  • Two (2) drill holes, GQ-842 and GQ-843, were completed to target and test relatively shallow portions of the Silver Queen vein adjacent to the East Pit and between two (2) areas of historic mining on this vein system. These holes were successful in verifying the presence of unmined and in-place vein material with significant gold/silver mineralization (see attached table). Additional mineralization was also encountered from vein zones in the hanging wall (HW) and footwall (FW) areas of the Silver Queen vein structure.

  • Hole GQ-842 also hit a deeper structure below the Silver Queen vein. Initial interpretations suggest that this deep structure may be the Main Fault. Previous interpretive work at Soledad Mountain has concluded that the Main Fault is a post-mineral fault only; however, gold and silver mineralization was intersected in an area where the Main Fault would project through (see accompanying table). If this intersection represents Main Fault mineralization, then, in addition to post-mineral movement, this structure was active during periods of mineralization in addition to the previously noted post-mineral movement. Consequently, it would also become a noteworthy future exploration target.

  • Holes GQ-840 and GQ-841 were drilled mostly for geotechnical and mine planning purposes, but also to test for any remaining mineralization in and around areas of historical mining. Hole GQ-840 targeted stoping areas within the Golden Queen vein, and GQ-841 targeted stoping areas within the Silver Queen vein. After hitting underground workings, the drilling operations were hampered by poor drill circulation, poor sample returns and other adverse conditions, but satisfactory mineralized material was recovered nonetheless (see accompanying table). Although this material is most likely not 'in-place' and should not be used in any resource determination, it shows that mineralized material exists around these old stopes and potentially could be recovered should future mining progress down to these levels.

  • GQ-839 was completed to target the strike extension of the Silver Queen vein system to the southeast. The hole hit several substantial vein quartz and silicified zones, including a vein zone underneath the main Silver Queen structure, which may represent the Main Fault or a new structure. Although only a small gold mineralized zone was intersected (see attached table), trace element geochemistry throughout this hole was strongly enriched in elements such as mercury, arsenic and antimony. This suggests that the drill hole penetrated the upper level of an epithermal, precious metals-bearing vein system, which is typically precious metals-poor. Future drilling in this vicinity would target areas which are deeper and underneath the vein quartz zones intersected in this hole. Productive, precious metals-bearing vein systems could exist in this targeted area and future drilling programs would test this hypothesis.

In general, the true thickness of the various mineralized zones is estimated at 75-95% of the mineralized interval in the drill hole. The table below highlights the assay results and initial observations:

Hole #

Hole
depth

(feet)

Drilled
interval (feet)

Length of

drilled
interval
in hole
(feet)

Estimated
true
thickness of
drilled
interval
(feet)

Au (opt)

Ag (opt)

Structure

GQ-836

900

140 – 175

35

30.7

0.042

0.62

Patience

(including

150 – 155)

5

4.4

 

0.149

 

0.36



190 - 195

5

4.9

0.016

0.05

unknown



420 - 430

10

9.7

0.017

0.07

Queen Esther



450 - 455

5

4.9

0.017

0.09

Queen Esther



610 - 615

5

4.1

0.040

1.33

TRP dike – TMP
contact

GQ-837

885

20 – 35

15

14.5

0.057

0.27

unknown



(including

 30 - 35

5

 

4.8

 

0.152

 

0.34

unknown



90 - 100

10

9.6

0.011

0.09

Independence



110 - 115

5

4.8

0.010

0.07

Independence



200 - 205

5

4.7

0.010

0.08

unknown



235 - 290 

55

51.7

0.048

0.29

Queen Esther



(including

240 - 245)

5

4.7

0.159

0.30



(including

260 - 265)

5

4.7

0.118

0.22



645 - 660

15

13.3

0.002

0.25

Silver Queen

GQ-838

900

45 - 50

5

4.9

0.027

0.55

unknown



75 - 85

10

9.8

0.012

0.07

Independence



100 - 105

5

4.9

0.011

0.15

Independence



125 - 160

35

34.0

0.029

0.28

Queen Esther



195 - 200

5

4.1

0.016

0.18

TRP dike-TMP contact



380 - 385

5

4.7

0.010

0.06

TRP dike-TMP contact



445 - 450

5

4.6

0.095

0.06

unknown



460 - 465

5

4.6

0.010

0.03

unknown



570 - 620

50

45.6

0.003

0.18

TRP dike-TMP contact



895 - 900

5

4.2

0.010

0.52

Silver Queen

GQ-839

1,065

885 - 900

15

13.5

0.018

0.28

Silver Queen vein

GQ-840

555

70 - 115

45

40.5

0.022

0.06

Golden Queen
hanging wall
(HW) vein zone



125 - 140

15

13.4

0.015

0.21

Starlight HW
vein zone



180 - 185

5

4.5

0.022

0.46

Golden Queen
HW vein zone



210 - 235

25

22.3

0.012

0.18

Golden Queen
HW vein zone



255 - 260

5

4.5

0.014

0.10

Golden Queen
HW vein zone



300 - 340

40

35.8

0.021

0.19

Golden Queen
vein



340 - 430

90

80.6

0.037

0.50

Golden Queen
vein(1)



440 - 445

5

4.5

0.012

0.59

Golden Queen
footwall (FW)
vein zone



455 - 475

20

18.1

0.023

0.82

Golden Queen
(FW) vein zone

GQ-841

 

670

300 - 315

15

14.4

0.015

0.12

Silver Queen
hanging wall
(HW) vein zone



330 - 335

5

4.8

0.013

0.20

Silver Queen HW
vein zone



370 - 405

35

33.1

0.009

0.29

Silver Queen HW
vein zone



405 - 425

20

N/A

N/A

N/A

OPEN STOPE



425 - 455

30

28.5

0.048

5.34

Golden Queen
vein(1)



455 - 495

40

N/A

N/A

N/A

No sample return



495 - 540

45

43.3

0.019

0.24

Silver Queen vein
(2)



580 - 600

20

19.4

0.018

0.18

Silver Queen
footwall (FW)
vein zone(2)



645 - 670

25

24.2

0.011

0.05

Silver Queen
(FW) vein zone(2)

GQ-842

900

280 - 295

15

12.3

0.033

0.21

Silver Queen
hanging wall
(HW) vein zone



335 – 435

100

83.1

0.046

0.42

Silver Queen vein



(including

360 – 365)

5

4.2

0.091

0.72



(including

405 – 420)

15

12.5

0.093

0.72



460 - 465

5

4.2

0.010

0.09

Silver Queen footwall (FW)
vein zone



525 - 530

5

12.5

0.017

0.31

Silver Queen FW
vein zone



540 – 545

5

4.2

0.015

0.62

Silver Queen FW
vein zone



590 – 620

30

23.8

0.048

0.34

unknown



(including

600 -605)

5

4.0

0.197

0.60

unknown



690 - 695

5

4.3

0.010

0.27

Unknown



755 – 825

70

60.6

0,021

0.97

Unknown



(including

755 – 760)

5

4.3

0.180

1.12

Main Fault

GQ-843

800

415 - 435

20

16.3

0.054

0.16

Silver Queen
hanging wall
(HW) vein zone


475 - 485 

10

8.1

0.028

0.81

Silver Queen HW
vein zone

515 - 570 

55

43.9

0.049

0.32

Silver Queen vein

(including
550 - 560)

10

8.0

0.145

0.64

585 – 600

15

12.0

0.017

0.27

Silver Queen
footwall (FW)
vein zone

GQ-844

800

240 - 250

10

8.9

0.014

0.09

unknown

(1)            

Working intersected with poor sample recovery and poor drill circulation; samples most likely not in place.
Use this data with caution.

(2)            

May not be in place.

 

Additional information on the geographic parameters of the drilling program is presented in the table and figure below:

Hole ID

Collar

azimuth

Collar
inclination

TD

GQ-836

225

-45

900

GQ-837

225

-54

885

GQ-838

225

-50

900

GQ-839

0

-90

1065

GQ-840

45

-85

555

GQ-841

225

-55

670

GQ-842

0

-90

900

GQ-843

225

-85

800

GQ-844

225

-45

800

 

The following figure illustrates the geographic parameters of the drill program:

Golden Queen Mining LLC is currently completing the final analysis and interpretation of all the data generated from this drilling program. This work will lead to the generation of an updated resource model for the East Pit and adjacent areas. This work is expected to be completed by the end of May 2018. The resources defined by this exercise will be incorporated into an updated mine plan and 43-101 as required, to be completed during the third quarter.

April Production Results

The Company announces its operating results for April 2018, including total gold production of 3,035 ounces and revenue of US$2.11 m from the sale of 1,351 ounces of gold from the Soledad Mountain gold-silver mine.  The remaining April production sale revenue will be recognized in May 2018.

Quality Assurance and Quality Control Procedures

The Main Pit 2 Infill Drilling Program is being accomplished with Reverse Circulation ("RC") drilling methods using an established contractor, Boart Longyear of Elko, Nevada. Each drill hole has been sampled on five-foot intervals throughout the entire length of the hole, and every interval drilled has been submitted to the independent lab for analysis. On average, approximately eight to ten kg of RC drill cuttings were sent to the lab for each five-foot drill interval. All sampling was conducted under the supervision of the Company's Qualified Person and/or project geologists, and the chain of custody from the project to the independent lab was continuously monitored. The Company submits approximately 10 to 15% of the samples in the form of blanks; standard reference materials and field duplicates for Quality Assurance/Quality Control ('QA/QC') purposes. In addition, the independent lab also completes their own set of QA/QC checks on the Company's submitted samples. The analytical results of all QA/QC samples have been reviewed prior to the release of this data. All analytical results have also been reviewed for their geological context and checked against the drill logs.

The independent laboratory used for this project was Bureau Veritas Mineral Laboratories ('BV') of Sparks, Nevada, an ISO 9001:2000 certified laboratory. Drill samples were picked up at Soledad Mountain by a BV employee and taken to the BV laboratory, where the samples were crushed, pulverized, digested and analyzed. All samples were analyzed for gold and silver. Gold analyses were completed using fire assay fusion and an atomic absorption spectroscopy ('AAS') finish on a 30-gram split (FA430-Au method). Silver analyses were completed using aqua regia digestion and an atomic absorption spectroscopy finish (AQ400-Ag method).

Drill hole deviation was measured by north-seeking, gyroscopic down hole surveying tools completed on all holes by Minex of Elko, Nevada. Final collar locations were surveyed by differential GPS by on-staff mine surveyors.

Technical Information                                                                                                                                        

The scientific and technical content of this news release relating to the drill results was reviewed, verified and approved by George F. Klemmick, BSc. Geology and CPG-10937, independent consulting geologist, and a qualified person as defined by National Instrument 43-101. 

The scientific and technical content of this news release relating to the operational results was reviewed, verified and approved by Tim Mazanek, SME, a qualified person as defined by National Instrument 43-101. 

About Golden Queen Mining Co. Ltd.:

Golden Queen is a gold and silver producer holding a 50% interest in an open pit, heap leach mining operation on the Soledad Mountain property, located just outside the town of Mojave in Kern County in southern California.

Caution with Respect to Forward-looking Statements:  Except for statements of historical fact contained herein, the information in this press release includes certain "forward-looking information" or "forward-looking statements" within the meaning of applicable Canadian and U.S. securities legislation. Forward-looking statements can generally be identified by the use of forward-looking terminology such as "will continue to", or similar terminology.  Forward-looking statements include but are not limited to, statements related to the potential that the results of the ongoing infill drilling program, once completed, will support expansion of the mine plan area as well as plans and intentions with respect to activities on the Project. There can be no assurance that such statements will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements.  Forward-looking information is based on reasonable assumptions that have been made by the Company as at the date of such information and is subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of the Company to differ materially from statements in this press release regarding our intentions including, without limitation, risks and uncertainties regarding results of future drilling supporting theoretical interpretation based on limited drill data, the uncertainties inherent in the interpretation of the results of exploration drilling in general, and other risks and uncertainties disclosed in the section entitled "Risk Factors" contained in our Annual Report on Form 10-K for the year ended December 31, 2017. Investors are cautioned that forward-looking statements are not guarantees of future performance and, accordingly, investors should not put undue reliance on forward-looking statements. Any forward-looking statement made by the Company in the press release is based only on information currently available to us and speaks only as of the date on which it is made. The Company does not undertake to update any forward-looking information that is contained or incorporated by reference herein, except in accordance with applicable securities laws.

View original content with multimedia:http://www.prnewswire.com/news-releases/golden-queen-announces-final-drill-assays-from-the-2018-main-pit-2-infill-drilling-program-and-april-production-results-300650294.html

SOURCE Golden Queen Mining Co. Ltd.



Contact
Brenda Dayton, Telephone: 778.373.1557, Email: bdayton@goldenqueen.com
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