Silvercorp Launches a Drill Program for Gold Mineralization at the LMW, LME and TLP Mines

- May 28th, 2020

Silvercorp Metals is pleased to report that a drill program targeting gold mineralization is underway at the LMW, LME and TLP mines.

Silvercorp Metals Inc. (“Silvercorp” or the “Company”) is pleased to report that a drill program targeting gold (“Au”) mineralization is underway at the LMW, LME and TLP mines within the Ying Mining District, Henan Province, China.

Silvercorp has previously reported limited gold assay results in news releases dated
January 4, 2011,
January 10, 2011,
January 26, 2012,
February 13, 2012,
August 20, 2012,
January 31, 2013 and February 19, 2014 for the LMW, LME and TLP mines, but as the focus was on mining silver-lead-zinc veins the characterization of gold mineralization was poorly understood. As such, many gold-bearing intercept results from drilling over the years have never been released as they do not fit into any known silver-lead-zinc veins that are mined by the Company.

Recent tunneling programs have exposed gently-dipping quartz-ankerite-sulfide shear zones with high gold and copper values, such as LM22 and LM26 at the LMW mine and LM4E2 at the LME mine. The photos below show the exposed LM22 structure from the LMW mine of a massive quartz-ankerite-sulfide vein composed of 19% Cu and 20 g/t Au over 0.3 metres (“m”) within a silicification shear zone. This clearly shows that the gold-mineralized, sub-horizontal, quartz-ankerite-sulfide shear zones were cut and over-printed by the later stage sub-vertical silver-lead-zinc veins that Silvercorp has been mining.

Figure 1 is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/12645a9b-6567-4c24-8745-00588bbe568d

Figure 2 is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/7f7ba998-65f3-46dc-adfe-a1e7e9215f6d

Initial sample results from these tunnels and decline are listed in Table 1. LM22, from the decline at 805 m elevation, extends 30 m long with a 0.43 m sample width and an average grade of 13.95 g/t Au, 2.2% Cu and 26 g/t Ag. Vein LM26 also contains high copper and gold values.

Table 1: Au mineralized zones exposed by drift tunneling at the LMW and LME mines

Mines Tunnel ID Target
Vein
Level
(m)
Length
(m)
Sample Width
(m)
 Au
(g/t)
Ag
(g/t)
Pb
(%)
Zn
(%)
Cu
(%)
 
LMW PD924-LM22-834-3SYM_Decline LM22 805 30.0 0.43 13.95 26 0.09 0.03 2.20
LMW PD924-LM22-834-3NYM LM22 834 15.0 0.30 4.35 19 0.03 0.02 3.85
LMW XPDN-LM26-650-3WYM LM26 650 10.0 0.46 1.52 207 0.99 0.34 0.79

With the discovery of the sub-horizontal nature of gold-related shear zones, the Company has re-examined its database for drill intercepts with gold grades in earlier drilling programs. Table 2 lists the assay results of the drill holes with gold values higher than 2.0 g/t that have not been released before. Most of these gold carrying intercepts were not mined as many tunnels advanced horizontally and did not hit these sub-horizontal shear zones.

The intercepts from Table 2 are relatively narrow, which is mostly due to selective sampling techniques as current exploration in the Ying Mining District is targeting narrow veins. Logging of the drill core shows much wider quartz-ankerite-epidote-k-feldspar-biotite-sulfide alteration, but only narrow samples were taken in most occasions.

From Table 2, sub-horizontal shear zone LM22 was intercepted by three sub-vertical drill holes ZKX0308, ZKX0310 and ZKX0309 near 840 m elevation. ZKX0308 has a sample width of 0.28 m grading 22.65 g/t Au and 19.8% Cu, ZKX0310 has a sample width of 0.50 m grading 75.7 g/t Au and 0.35% Cu, and ZKX0309 has a sample width of 0.28 m grading 63.5 g/t Au and 0.32% Cu. ZKX0309 also intercepted multiple sub-horizontal shear zones, including LM26 with a sample width of 0.61 m grading 4.7 g/t Au at 662 m elevation, and an unknown shear zone at 403 m elevation with a sample width of 0.91 m grading 2.55 g/t Au.

LM26 was also intercepted by drill hole ZKX0306 at 625 m elevation with a sample width of 0.57 m grading 22.35 g/t Au.

Highlights of selected drill hole interceptions with higher Au values:

  • Hole ZKX10505 has a sample width 0.51m from 397.94 m to 398.45 m, grading 25.42 g/t Au and 15 g/t Ag from LMW;
  • Hole ZKL5033 has a sample width of 0.55m grading 29.5 g/t Au from LME
  • Hole ZK-Ⅲ-1124 has a sample width of 1.22 m grading 9.17 g/t Au, 314 g/t Ag and 2.12% Pb from TLP;
  • Hole ZKT05S35 has a sample width of 2.0 m grading 3.92 g/t Au, 2765 g/t Ag, 4.95% Pb and 0.88% Cu from TLP;
  • Hole ZKT2901 has a sample width of 2.54 m grading 3.6 g/t Au, 266 g/t Ag, 8.55% Pb and 3.52% Cu from TLP.

Table 2: Selected drill holes with higher Au values

Mine Hole ID From
(m)
To
(m)
Interval
(m)
Elevation
(m)
 Au
(g/t)
 Ag
(g/t)
Pb
(%)
Zn
(%)
Cu
(%)
Vein Year Ag-Pb-Zn
Released
LMW ZKX10505 397.94 398.45 0.51 411 25.42 15 0.03 0.06 0.01 2019
LMW ZKX10508 174.83 175.70 0.87 545 2.22 5 0.02 0.01 0.00 2019
LMW ZKX10916 369.59 369.89 0.30 434 2.17 4 0.02 0.02 0.01 2019
LMW ZKX12004 28.50 29.22 0.72 886 4.96 4 0.02 0.01 1.93 2019
LMW ZKX117PA01 171.26 172.59 1.33 918 3.70 4 0.02 0.01 0.06 2017
LMW ZKX02Q01 189.37 190.10 0.73 787 3.71 351 2.62 1.32 2.56 2016 Released
LMW ZKX0662 211.28 212.36 1.08 743 5.62 1 0.01 0.01 0.01 2016
LMW ZKX104S23 187.44 188.64 1.20 796 2.18 295 3.35 0.18 0.07 2013 Released
LMW ZKX0604 155.71 155.88 0.17 864 4.45 27 0.05 0.11 1.97 2012
LMW ZKX1124 32.20 32.46 0.26 892 4.27 8 0.01 0.01 0.01 LM22 2012
LMW ZKX2201 209.23 210.33 1.10 805 4.06 3 0.01 0.01 0.01 2012
LMW ZKX0001 306.98 307.28 0.30 759 4.54 3 0.01 0.01 0.01 2011
LMW ZKX0001 332.55 333.42 0.87 745 4.04 4 0.01 0.01 0.32 2011
LMW ZKX0003 542.20 542.40 0.20 512 2.89 34 0.07 0.02 1.84 2011
LMW ZKX0004 617.55 618.21 0.66 399 8.84 1206 5.60 1.65 0.48 2011
LMW ZKX0404 31.79 33.22 1.43 907 3.06 9 0.03 0.03 0.01 2011
LMW ZKX0405 286.09 286.39 0.30 734 19.70 4 0.01 0.03 0.33 2011
LMW ZKX0406 256.04 256.24 0.20 726 135.00 27 0.01 0.07 4.28 2011
LMW ZKX10604 334.52 335.12 0.60 811 21.60 81 0.56 0.31 0.01 2011
LMW ZKX10606 149.78 150.82 1.04 851 5.59 6 0.05 0.03 0.01 LM22 2011
LMW ZKX10607 140.97 141.58 0.61 848 3.95 25 0.53 0.88 0.02 2011
LMW ZKX0305 341.77 342.10 0.33 689 10.23 12 0.12 0.05 0.08 2010
LMW ZKX0306 368.90 369.47 0.57 625 22.35 8 0.04 0.01 0.05 LM26 2010
LMW ZKX0307 150.43 150.71 0.28 786 3.55 23 0.04 0.02 2.62 2010
LMW ZKX0308 79.66 79.94 0.28 843 22.65 141 0.17 0.14 19.80 LM22 2010
LMW ZKX0308 194.30 194.44 0.14 735 3.98 22 0.31 0.02 0.80 2010
LMW ZKX0309 80.10 80.32 0.22 841 63.50 8 0.09 0.07 0.32 LM22 2010
LMW ZKX0309 264.95 265.56 0.61 662 4.70 3 0.01 0.02 0.12 LM26 2010
LMW ZKX0309 402.95 403.89 0.94 403 2.55 3 0.03 0.01 0.05 2010
LMW ZKX0310 84.37 84.87 0.50 834 75.74 6 0.02 0.01 0.35 LM22 2010
LME ZKL54T1701 393.93 397.47 3.54 520 2.54 31 0.64 0.61 0.00 LM4E2 2019
LME ZKL58T1703 363.71 364.70 0.99 547 4.94 43 0.50 0.71 0.01 LM4E2 2019
LME ZKL6712 153.05 153.64 0.59 728 7.30 19 1.93 0.02 0.02 LM4E2 2019
LME ZKL7605 672.22 672.83 0.61 214 3.99 5 0.02 0.02 0.00 2019
LME ZKL5033 454.22 454.77 0.55 64 29.50 15 0.03 0.03 0.01 2017
LME ZKL5337 297.77 298.22 0.45 239 3.01 315 0.58 0.43 0.04 2017 Released
LME ZKL5337 300.94 301.54 0.60 236 2.12 4229 19.76 0.96 0.15 2017 Released
LME ZKL53A21 91.96 92.68 0.72 522 2.35 5 0.16 0.02 0.02 2017
LME ZKL5421 303.48 304.39 0.91 283 2.63 50 0.79 0.38 0.02 2017
LME ZKL5421 358.91 359.18 0.27 245 3.51 5 0.03 0.07 0.02 2017
LME ZKL5422 392.93 393.25 0.32 160 2.69 154 4.08 2.95 0.27 2017 Released
LME ZKL5422 424.88 426.14 1.26 132 2.72 182 9.08 1.79 0.14 2017 Released
LME ZKL5422 428.12 428.68 0.56 130 2.64 197 0.70 0.19 0.20 2017
LME ZKL5423 497.66 498.30 0.64 38 3.77 194 1.36 1.46 0.07 2017
LME ZKL55A21 62.38 63.13 0.75 530 2.11 89 0.43 0.60 0.21 2017
LME ZKL58S19 237.49 237.69 0.20 374 3.70 73 0.77 0.15 0.01 2017
LMF ZKL7005 400.30 400.77 0.47 272 2.81 5 0.06 0.12 0.01 2017
LME ZKL5144 486.69 487.18 0.49 518 2.31 5 0.03 0.09 0.01 2016
LME ZKL7004 330.85 331.33 0.48 350 7.45 1821 2.54 0.34 0.08 2016
LME ZKL5342 67.16 68.51 1.35 543 2.98 4 0.05 0.03 0.01 LM4E2 2015
LME ZKL58S17 226.24 226.79 0.55 397 3.04 338 0.74 0.48 0.06 2015
LME ZKL58S17 233.02 233.85 0.83 391 3.81 185 3.23 0.93 0.02 2015
LME ZK160401 105.51 105.77 0.26 1106 2.33 1 0.00 0.00 0.00 2011
LME ZKL5305 297.25 297.87 0.62 567 2.78 10 0.47 0.26 0.01 LM4E2 2010
LME ZKL5305 328.50 328.66 0.16 538 10.56 3 0.05 0.01 0.02 2010
LME ZKL5305 384.54 384.93 0.39 486 3.56 5 0.08 0.01 0.01 2010
LME ZKL6103 252.51 253.94 1.43 597 3.43 25 0.13 0.18 0.01 LM4E2 2010
LME ZKL6703 256.77 257.37 0.60 598 2.08 2 0.01 0.02 0.01 2010
LME ZKL6902 285.56 286.73 1.17 566 2.28 37 0.19 0.17 0.02 2010
LME ZKL6903 276.81 278.10 1.29 587 2.46 13 0.14 0.10 0.01 2010
TLP ZKG0527 537.22 537.63 0.41 195 2.02 6 0.27 0.02 0.01 2019
TLP ZKG0934 336.58 337.70 1.12 541 4.41 9 0.10 0.14 0.00 2017
TLP ZKTA2402 162.26 164.52 2.26 894 2.87 7 0.03 0.06 0.01 2016
TLP ZK-Ⅲ-1124 281.07 282.29 1.22 497 9.17 314 2.12 0.33 0.04 2014
TLP ZKX10607 140.97 141.58 0.61 848 3.95 25 0.53 0.88 0.02 2014
TLP ZK-Ⅲ-2510 429.20 430.10 0.90 404 2.32 331 10.02 1.32 0.51 2013 Released
TLP ZKG0404 304.94 305.90 0.96 553 4.30 1761 9.45 1.56 0.13 2012 Released
TLP ZKG1401 75.47 76.19 0.72 802 3.48 71 0.09 0.05 0.01 2011
TLP ZKT05S35 188.02 190.02 2.00 733 3.92 2765 4.95 0.80 0.88 2011
TLP ZKT11S31 61.46 62.00 0.54 888 2.29 75 1.95 0.39 0.05 2011
TLP ZKT13S31 112.87 113.77 0.90 867 4.27 6 0.02 0.03 0.01 2011
TLP ZKT0701 84.04 84.36 0.32 714 2.46 1149 7.15 2.22 0.15 2010
TLP ZKT0701 98.29 98.55 0.26 706 3.46 77 2.77 0.45 0.73 2010
TLP ZKT0904 119.08 119.69 0.61 643 3.05 198 0.36 0.50 0.03 2010
TLP ZKT09S32 222.00 222.73 0.73 682 2.09 167 1.99 0.70 0.55 2010
TLP ZKT1301 145.63 145.94 0.31 666 2.70 249 7.02 1.47 2.22 2010
TLP ZKT13S1 44.90 45.18 0.28 738 3.04 711 3.00 0.19 3.52 2010
TLP ZKT2105 291.86 293.52 1.66 463 3.05 22 0.08 0.09 0.03 2010
TLP ZKT21S4 43.70 44.25 0.55 772 7.62 478 2.98 0.15 6.54 2010
TLP ZKT31S1 63.73 64.03 0.30 762 4.28 146 24.24 0.12 0.16 2010
TLP ZKT2901 180.72 183.26 2.54 638 3.60 266 8.55 0.63 3.52 2009
TLP ZKT2904 238.00 239.64 1.64 525 3.83 110 0.60 0.15 1.58 2009
TLP ZKT33S22 59.16 60.73 1.57 707 2.95 4 0.23 0.01 0.11 2009
TLP ZK0601 361.12 361.48 0.36 636 2.75 256 0.71 4.28 0.10 2008

Currently, the historical drill cores are being re-logged and sampled for the alteration zones not previously sampled and assayed. Meanwhile, the Company will focus its ongoing drilling program to target gold bearing zones intercepted by the above drill holes with a total of ten drill rigs at the LMW, TLP and LME mines (three underground rigs and two surface rigs for LMW, three underground rigs for TLP, and two underground rigs for LME) with the intention of continuous sampling of all alteration zones to test for the existence of broad gold mineralization zones.

Quality Control

Drill cores are NQ size. Drill core samples, limited by apparent mineralization contact or shear/alteration contact, were split into halves by saw cutting. The half cores are stored in the Company’s core shacks for future reference and checking, and the other half core samples are shipped in security-sealed bags to the Chengde Huakan 514 Geology and Minerals Test and Research Institute in Chengde, Hebei Province, China, 226 km northeast of Beijing, and the Zhengzhou Nonferrous Exploration Institute Lab in Zhengzhou, Henan Province, China. Both labs are ISO9000 certified analytical labs. For analysis the sample is dried and crushed to minus 1mm and then split to a 200-300g subsample which is further pulverized to minus 200 mesh. Two subsamples are prepared from the pulverized sample. One is digested with aqua regia for gold analysis with atomic absorption spectroscopy (AAS), and the other is digested with two-acids for analysis of silver, lead, zinc and copper with AAS.

Channel samples are collected along sample lines perpendicular to the mineralized vein structure in exploration tunnels. Spacing between sampling lines is typically 5m along strike. Both the mineralized vein and the altered wall rocks are cut with continuous chisel chipping. Sample length ranges from 0.2m to more than 1m, depending on the width of the mineralized vein and the mineralization type. Channel samples are prepared and assayed with AAS at Silvercorp’s mine laboratory (Ying Lab) located at the mill complex in Luoning County, Henan Province, China. The Ying lab is officially accredited by the Quality and Technology Monitoring Bureau of Henan Province and is qualified to provide analytical services. The channel samples are dried, crushed and pulverized. A 200g sample of minus 160 mesh is prepared for assay. A duplicate sample of minus 1mm is made and kept in the laboratory archives. Gold is analysed by fire assay with AAS finish, and silver, lead, zinc and copper are assayed by two-acid digestion with AAS finish.

A routine quality assurance/quality control (QA/QC) procedure is adopted to monitor the analytical quality at each lab. Certified reference materials (CRMs), pulp duplicates and blanks are inserted into each lab batch of samples. QA/QC data at the lab are attached to the assay certificates for each batch of samples.

The Company maintains its own comprehensive QA/QC program to ensure best practices in sample preparation and analysis of the exploration samples. Project geologists regularly insert CRM, field duplicates and blanks to each batch of 30 core samples to monitor the sample preparation and analysis procedures at the labs. The analytical quality of the labs is further evaluated with external checks by sending about 3-5% of the pulp samples to higher level labs to check for lab bias.

Data from both the Company’s and the labs’ QA/QC programs are reviewed on a timely basis by project geologists.

Guoliang Ma, P. Geo., Manager of Exploration and Resource of the Company, is the Qualified Person for Silvercorp under NI 43-101 and has reviewed and given consent to the technical information contained in this news release.

About Silvercorp

Silvercorp is a profitable Canadian mining company producing silver, lead and zinc metals in concentrates from mines in China. The Company’s goal is to continuously create healthy returns to shareholders through efficient management, organic growth and the acquisition of profitable projects. Silvercorp balances profitability, social and environmental relationships, employees’ wellbeing, and sustainable development. For more information, please visit our website at www.silvercorp.ca.

For further information

Lon Shaver
Vice President
Silvercorp Metals Inc.

Phone: (604) 669-9397
Toll Free: 1(888) 224-1881
Email: investor@silvercorp.ca
Website: www.silvercorp.ca

CAUTIONARY DISCLAIMER – FORWARD LOOKING STATEMENTS

Certain of the statements and information in this press release constitute “forward-looking statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and “forward-looking information” within the meaning of applicable Canadian provincial securities laws. Any statements or information that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always, using words or phrases such as “expects”, “is expected”, “anticipates”, “believes”, “plans”, “projects”, “estimates”, “assumes”, “intends”, “strategies”, “targets”, “goals”, “forecasts”, “objectives”, “budgets”, “schedules”, “potential” or variations thereof or stating that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved, or the negative of any of these terms and similar expressions) are not statements of historical fact and may be forward-looking statements or information. Forward-looking statements or information relate to, among other things: the price of silver and other metals; the accuracy of mineral resource and mineral reserve estimates at the Company’s material properties; the sufficiency of the Company’s capital to finance the Company’s operations; estimates of the Company’s revenues and capital expenditures; estimated production from the Company’s mines in the Ying Mining District; timing of receipt of permits and regulatory approvals; availability of funds from production to finance the Company’s operations; and access to and availability of funding for future construction, use of proceeds from any financing and development of the Company’s properties.

Forward-looking statements or information are subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual events or results to differ from those reflected in the forward-looking statements or information, including, without limitation, risks relating to: social and economic impacts of COVID-19; fluctuating commodity prices; calculation of resources, reserves and mineralization and precious and base metal recovery; interpretations and assumptions of mineral resource and mineral reserve estimates; exploration and development programs; feasibility and engineering reports; permits and licenses; title to properties; property interests; joint venture partners; acquisition of commercially mineable mineral rights; financing; recent market events and conditions; economic factors affecting the Company; timing, estimated amount, capital and operating expenditures and economic returns of future production; integration of future acquisitions into the Company’s existing operations; competition; operations and political conditions; regulatory environment in China and Canada; environmental risks; foreign exchange rate fluctuations; insurance; risks and hazards of mining operations; key personnel; conflicts of interest; dependence on management; internal control over financial reporting as per the requirements of the Sarbanes-Oxley Act; and bringing actions and enforcing judgments under U.S. securities laws.

This list is not exhaustive of the factors that may affect any of the Company’s forward-looking statements or information. Forward-looking statements or information are statements about the future and are inherently uncertain, and actual achievements of the Company or other future events or conditions may differ materially from those reflected in the forward-looking statements or information due to a variety of risks, uncertainties and other factors, including, without limitation, those referred to in the Company’s most recent Annual Information Form under the heading “Risk Factors”. Although the Company has attempted to identify important factors that could cause actual results to differ materially, there may be other factors that cause results not to be as anticipated, estimated, described or intended. Accordingly, readers should not place undue reliance on forward-looking statements or information.  

The Company’s forward-looking statements and information are based on the assumptions, beliefs, expectations and opinions of management as of the date of this press release, and other than as required by applicable securities laws, the Company does not assume any obligation to update forward-looking statements and information if circumstances or management’s assumptions, beliefs, expectations or opinions should change, or changes in any other events affecting such statements or information. For the reasons set forth above, investors should not place undue reliance on forward-looking statements and information.

 

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May 28, 2020 – 4:45 AM PDT
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