Silvercorp Metals Inc. (TSX: SVM) (NYSE American: SVM) is pleased to report results from its 2021 exploration programs at the HPG mine. Extensive exploration drilling and tunneling are ongoing at the HPG mine, and all other mines at the Ying Mining District, Henan Province, China.
From November 1, 2020 to May 31, 2021, 23,977 metres from a total of 133 diamond drill holes, including 66 underground holes and 67 surface holes, were completed at the HPG mine. Assay results for 127 holes have been received, with 51 holes intercepting mineralization. Currently, 11 rigs are drilling at the HPG mine.
Drilling Intersected High-Grade Veins in the Production Areas
The diamond drilling programs at the HPG mine targeted blocks of known silver-lead-zinc and gold veins in the production areas that were previously missed due to limited drilling and tunneling, changes in the strikes and dips, and/or pinch-swelling of the pay-zones in the veins. Since access tunnels are already in place, any discovered high-grade blocks can quickly be converted to reserves and mined.
The high-grade intercepts for this period are associated with parallel silver-lead-zinc veins H5, H5W, and H5_2, and gold veins H16, H16_3, and H171W. Other veins include H10_1, H10_1a, H11, H12_1, and H13.
Highlights of high-grade intercepts at the HPG mine production area:
Surface and Underground Drilling Intersected High-Grade Gold Veins at Near Surface at the HPG Mine Resource Area
Surface and underground diamond drilling tested some artisanal workings in the northeast part of the HPG mining permit area and intersected high-grade Au veins. A follow-up drilling program will further test this discovery.
Highlights of high-grade, near-surface intercepts of Au vein H17 and H17_1 in the resource area:
Table 1: Selected intercepts from the 2021 drill programs at the HPG Mine
Hole ID | From (m) |
To (m) |
Elevation (m) |
Interval (m) |
True Width (m) |
Ag (g/t) |
Pb (%) |
Zn (%) |
Au (g/t) |
Cu ( %) |
Vein | Ore Type |
ZK01N03 | 44.83 | 46.77 | 373 | 1.94 | 1.58 | 719 | 13.09 | 5.09 | 1.77 | 0.19 | H5 | Ag-Pb-Zn |
incl. | 44.83 | 46.06 | 373 | 1.23 | 1.00 | 1051 | 20.11 | 7.58 | 1.71 | 0.25 | H5 | Ag-Pb-Zn |
ZK01N04 | 75.10 | 77.99 | 362 | 2.89 | 2.36 | 150 | 2.91 | 9.36 | 0.50 | 0.05 | H5W | Ag-Pb-Zn |
incl. | 76.41 | 77.17 | 362 | 0.76 | 0.62 | 420 | 8.33 | 30.93 | 0.56 | 0.14 | H5W | Ag-Pb-Zn |
ZK02N11 | 28.09 | 28.70 | 358 | 0.61 | 0.29 | 25 | 0.83 | 0.60 | 6.56 | 0.02 | H5E | Au |
ZK03N03 | 66.53 | 67.57 | 323 | 1.04 | 0.48 | 68 | 3.70 | 1.09 | 0.07 | 0.07 | H5 | Ag-Pb-Zn |
ZK07N10 | 24.58 | 26.10 | 368 | 1.52 | 1.20 | 407 | 1.36 | 3.99 | 0.66 | 0.06 | H5 | Ag-Pb-Zn |
ZK09N02 | 143.86 | 145.38 | 469 | 1.52 | 1.18 | 5 | 0.02 | 0.01 | 1.68 | 0.05 | H5 | Ag-Pb-Zn |
ZK09N03 | 207.58 | 208.82 | 402 | 1.24 | 0.95 | 8 | 0.10 | 0.05 | 2.73 | 0.01 | H5 | Ag-Pb-Zn |
ZK09N04 | 25.20 | 25.81 | 501 | 0.61 | 0.36 | 314 | 0.85 | 2.31 | 0.13 | 0.05 | H5_2 | Ag-Pb-Zn |
ZK09N11 | 26.97 | 28.80 | 543 | 1.83 | 1.19 | 164 | 0.18 | 0.03 | 0.96 | 0.07 | H5 | Ag-Pb-Zn |
ZK09N12 | 40.54 | 41.51 | 862 | 0.97 | 0.83 | 42 | 0.94 | 0.09 | 0.93 | 0.09 | H5_2 | Ag-Pb-Zn |
ZK09N14 | 19.21 | 20.89 | 552 | 1.68 | 1.45 | 14 | 0.03 | 0.02 | 1.62 | 0.05 | H5_2 | Ag-Pb-Zn |
ZK10N15 | 99.26 | 102.02 | 623 | 2.76 | 1.40 | 35 | 2.69 | 0.09 | 1.73 | 0.05 | H32E1 | Ag-Pb-Zn |
ZK10N15 | 110.46 | 111.44 | 621 | 0.98 | 0.80 | 85 | 6.19 | 0.08 | 0.48 | 0.08 | H15W | Ag-Pb-Zn |
ZK1122 | 43.05 | 47.55 | 714 | 4.50 | 2.01 | 28 | 4.20 | 0.24 | 0.11 | 0.03 | B1 | Ag-Pb-Zn |
ZK1122 | 114.49 | 120.04 | 646 | 5.55 | 1.61 | 156 | 5.18 | 0.15 | 0.35 | 0.03 | H10_1 | Ag-Pb-Zn |
ZK1122 | 275.47 | 276.43 | 491 | 0.96 | 0.35 | 26 | 5.63 | 1.36 | 0.04 | 0.04 | H11 | Ag-Pb-Zn |
ZK1132 | 2.80 | 4.04 | 660 | 1.24 | 0.63 | 108 | 1.21 | 0.18 | 0.15 | 0.03 | H14a | Ag-Pb-Zn |
ZK1132 | 132.16 | 133.37 | 622 | 1.21 | 0.78 | 235 | 0.65 | 0.07 | 3.33 | 0.07 | H11 | Ag-Pb-Zn |
ZK1132 | 172.78 | 174.13 | 611 | 1.35 | 0.90 | 138 | 1.82 | 0.30 | 0.29 | 0.17 | H9 | Ag-Pb-Zn |
ZK11N02 | 107.06 | 108.59 | 501 | 1.53 | 0.90 | 6 | 0.04 | 0.04 | 1.68 | 0.01 | H5_3 | Au |
ZK12202 | 110.53 | 111.51 | 628 | 0.98 | 0.73 | 7 | 0.21 | 0.26 | 1.48 | 0.01 | H12_1 | Au |
ZK12203 | 139.70 | 140.91 | 586 | 1.21 | 0.75 | 3 | 0.12 | 0.09 | 5.10 | 0.03 | H12_1 | Au |
ZK1325 | 109.67 | 111.59 | 654 | 1.92 | 1.60 | 137 | 0.65 | 2.60 | 0.90 | 0.03 | H16 | Ag-Pb-Zn |
ZK1326 | 174.61 | 175.50 | 604 | 0.89 | 0.67 | 64 | 3.10 | 2.48 | 0.03 | 0.01 | H9 | Ag-Pb-Zn |
ZK1327 | 183.00 | 184.08 | 623 | 1.08 | 0.77 | 15 | 0.16 | 0.27 | 2.01 | 0.01 | H10_1 | Ag-Pb-Zn |
ZK13N02 | 57.49 | 58.72 | 704 | 1.23 | 0.67 | 19 | 3.75 | 0.36 | 0.07 | 0.03 | H10_1W | Ag-Pb-Zn |
ZK13N02 | 224.37 | 225.99 | 551 | 1.62 | 0.88 | 123 | 0.03 | 0.01 | 1.02 | 0.00 | H11 | Ag-Pb-Zn |
ZK13N03 | 110.59 | 111.57 | 676 | 0.98 | 0.77 | 120 | 0.06 | 0.08 | 0.33 | 0.00 | H9 | Ag-Pb-Zn |
ZK13N05 | 4.20 | 5.14 | 664 | 0.94 | 0.64 | 20 | 0.45 | 0.47 | 1.15 | 0.02 | H14a | Ag-Pb-Zn |
ZK13N05 | 41.42 | 44.83 | 669 | 3.41 | 2.33 | 421 | 0.79 | 1.77 | 2.47 | 0.08 | H11_1 | Ag-Pb-Zn |
ZK1413 | 433.50 | 438.09 | 484 | 4.59 | 2.89 | 13 | 0.36 | 0.16 | 1.40 | 0.01 | H21 | Ag-Pb-Zn |
ZK14N09 | 115.47 | 116.47 | 624 | 1.00 | 0.70 | 31 | 2.48 | 0.09 | 0.29 | 0.10 | H15Wa | Ag-Pb-Zn |
ZK1639 | 34.49 | 35.99 | 794 | 1.50 | 1.12 | 110 | 0.19 | 0.09 | 1.08 | 0.01 | H17_1 | Au |
ZK1639 | 56.81 | 57.83 | 776 | 1.02 | 0.76 | 6 | 0.04 | 0.09 | 4.59 | 0.01 | H17 | Au |
ZK1710 | 83.02 | 84.22 | 702 | 1.20 | 1.06 | 13 | 2.01 | 2.59 | 0.03 | 0.00 | H10_1 | Ag-Pb-Zn |
ZK1812 | 72.17 | 73.42 | 748 | 1.25 | 0.78 | 367 | 12.33 | 0.42 | 1.42 | 0.09 | H18 | Ag-Pb-Zn |
ZK1816 | 122.49 | 123.63 | 727 | 1.14 | 1.11 | 15 | 0.15 | 0.05 | 1.64 | 0.00 | H18 | Ag-Pb-Zn |
ZK1819 | 119.47 | 119.98 | 715 | 0.51 | 0.49 | 452 | 0.46 | 1.12 | 0.44 | 0.08 | H17 | Au |
ZK1824 | 32.42 | 33.43 | 778 | 1.01 | 0.78 | 13 | 0.06 | 0.04 | 6.08 | 0.01 | H17 | Au |
ZK1952 | 85.47 | 86.22 | 609 | 0.75 | 0.34 | 21 | 0.15 | 0.20 | 3.52 | 0.03 | H10_1a | Au |
ZK1952 | 185.96 | 186.84 | 559 | 0.88 | 0.65 | 47 | 2.30 | 0.17 | 0.28 | 0.01 | H11 | Ag-Pb-Zn |
ZK2019 | 80.80 | 82.61 | 756 | 1.81 | 1.68 | 37 | 0.31 | 0.05 | 10.15 | 0.03 | H17 | Au |
ZK2118 | 101.24 | 102.05 | 695 | 0.81 | 0.79 | 3 | 0.02 | 0.02 | 1.85 | 0.01 | H11 | Ag-Pb-Zn |
ZK2132 | 88.76 | 89.81 | 617 | 1.05 | 0.76 | 23 | 6.30 | 0.22 | 0.14 | 0.01 | H39_2 | Ag-Pb-Zn |
ZK2132 | 110.21 | 111.41 | 613 | 1.20 | 0.87 | 1 | 0.03 | 0.02 | 2.19 | 0.01 | H12_1 | Au |
ZK2136 | 204.35 | 205.70 | 573 | 1.35 | 1.33 | 5 | 0.06 | 0.10 | 1.66 | 0.01 | H10_1 | Ag-Pb-Zn |
ZK2137 | 39.75 | 41.26 | 599 | 1.51 | 0.90 | 2 | 0.01 | 0.01 | 3.65 | 0.00 | H12Ea | Au |
ZK2214 | 124.48 | 127.20 | 749 | 2.72 | 1.53 | 132 | 0.17 | 0.15 | 0.92 | 0.02 | H17 | Au |
ZK2335_1 | 224.93 | 226.93 | 611 | 2.00 | 1.43 | 149 | 4.64 | 0.96 | 1.45 | 0.53 | H12_1 | Au |
ZK2335_1 | 453.34 | 454.29 | 427 | 0.95 | 0.68 | 8 | 0.14 | 0.20 | 6.85 | 0.01 | H16 | Ag-Pb-Zn |
ZK2335_1 | 457.34 | 460.03 | 423 | 2.69 | 1.94 | 60 | 0.47 | 0.33 | 1.20 | 0.01 | H16a | Ag-Pb-Zn |
ZK2335_1 | 551.74 | 552.19 | 349 | 0.45 | 0.36 | 136 | 5.71 | 0.04 | 0.98 | 0.11 | H15 | Ag-Pb-Zn |
ZK2337 | 80.78 | 82.33 | 705 | 1.55 | 1.27 | 47 | 4.49 | 3.06 | 0.81 | 0.11 | H9 | Ag-Pb-Zn |
ZK2337 | 171.77 | 172.34 | 641 | 0.57 | 0.47 | 2 | 0.11 | 0.42 | 3.35 | 0.01 | H14 | Au |
ZK2337 | 182.89 | 185.10 | 633 | 2.21 | 1.82 | 11 | 1.12 | 1.21 | 0.81 | 0.07 | H16a | Ag-Pb-Zn |
ZK2345 | 169.12 | 169.86 | 575 | 0.74 | 0.67 | 5 | 0.04 | 0.08 | 7.74 | 0.00 | H13 | Au |
ZK2410 | 101.35 | 106.33 | 774 | 4.98 | 2.53 | 16 | 0.06 | 0.04 | 9.86 | 0.01 | H17 | Au |
incl. | 101.35 | 102.41 | 775 | 1.06 | 0.67 | 21 | 0.08 | 0.02 | 26.38 | 0.01 | H17 | Au |
ZK2411 | 119.48 | 120.50 | 770 | 1.02 | 0.65 | 8 | 0.53 | 0.04 | 3.72 | 0.00 | H18 | Ag-Pb-Zn |
ZK2541 | 79.84 | 81.60 | 710 | 1.76 | 1.42 | 200 | 2.73 | 4.04 | 0.59 | 0.12 | H9 | Ag-Pb-Zn |
ZK2541 | 191.12 | 193.07 | 637 | 1.95 | 1.74 | 18 | 0.61 | 0.77 | 1.74 | 0.11 | H16 | Ag-Pb-Zn |
ZK2541 | 250.58 | 251.30 | 599 | 0.72 | 0.54 | 2 | 0.16 | 0.25 | 2.35 | 0.01 | H17_1 | Au |
ZK2729 | 4.71 | 6.25 | 652 | 1.54 | 0.93 | 1 | 0.00 | 0.00 | 2.47 | 0.00 | H39_1 | Au |
ZK2729 | 145.58 | 146.23 | 630 | 0.65 | 0.48 | 7 | 2.11 | 0.12 | 1.71 | 0.02 | H11 | Ag-Pb-Zn |
ZK2736 | 51.22 | 51.87 | 759 | 0.65 | 0.51 | 240 | 9.34 | 0.16 | 0.23 | 0.07 | H39_2 | Ag-Pb-Zn |
ZK2736 | 355.40 | 356.31 | 540 | 0.91 | 0.78 | 14 | 0.54 | 0.16 | 1.46 | 0.01 | H16 | Ag-Pb-Zn |
ZK2736 | 417.01 | 418.17 | 498 | 1.16 | 1.01 | 8 | 0.06 | 0.03 | 11.80 | 0.01 | H16_3 | Au |
ZK2736 | 547.95 | 549.04 | 409 | 1.09 | 0.48 | 148 | 0.61 | 0.06 | 0.06 | 0.19 | H20W | Ag-Pb-Zn |
ZK2739 | 73.18 | 73.91 | 710 | 0.73 | 0.40 | 1 | 0.03 | 0.06 | 4.95 | 0.01 | H39_1 | Au |
ZK2739 | 333.61 | 334.54 | 528 | 0.93 | 0.56 | 14 | 4.07 | 0.15 | 0.24 | 0.03 | H12E | Ag-Pb-Zn |
ZK3620 | 207.87 | 210.18 | 760 | 2.31 | 2.11 | 33 | 0.07 | 0.02 | 2.30 | 0.00 | H17_1 | Au |
ZK3624 | 366.14 | 366.86 | 635 | 0.72 | 0.65 | 3 | 0.05 | 0.09 | 2.57 | 0.04 | H22 | Au |
ZK3625 | 238.47 | 239.48 | 707 | 1.01 | 0.89 | 39 | 0.18 | 0.11 | 3.45 | 0.01 | H17_1 | Au |
ZK3625 | 265.31 | 266.04 | 686 | 0.73 | 0.65 | 65 | 0.27 | 0.10 | 3.58 | 0.03 | H17 | Au |
ZK3816 | 200.84 | 203.36 | 705 | 2.52 | 1.74 | 31 | 0.41 | 0.12 | 1.98 | 0.01 | H17 | Au |
ZK3817 | 129.92 | 131.16 | 774 | 1.24 | 0.70 | 3 | 0.04 | 0.02 | 1.63 | 0.00 | H17_1W | Au |
ZK3817 | 187.33 | 188.78 | 730 | 1.45 | 1.27 | 64 | 0.26 | 0.05 | 20.78 | 0.01 | H17_1 | Au |
ZK3817 | 193.98 | 199.21 | 725 | 5.23 | 4.71 | 33 | 0.30 | 0.11 | 1.33 | 0.02 | H17 | Au |
ZK3818 | 119.20 | 120.41 | 782 | 1.21 | 1.05 | 2 | 0.05 | 0.02 | 2.49 | 0.00 | H17_1W | Au |
ZK3818 | 183.39 | 184.57 | 733 | 1.18 | 1.07 | 56 | 0.12 | 0.01 | 2.01 | 0.02 | H17 | Au |
ZK4013 | 143.68 | 144.51 | 776 | 0.83 | 0.57 | 659 | 0.06 | 0.01 | 1.77 | 0.01 | H17 | Au |
ZK4014 | 173.28 | 174.12 | 731 | 0.84 | 0.70 | 74 | 0.06 | 0.08 | 0.90 | 0.01 | H17 | Au |
ZK4016 | 189.85 | 192.66 | 707 | 2.81 | 2.23 | 52 | 0.77 | 0.54 | 3.71 | 0.02 | H17 | Au |
ZK4401 | 195.07 | 197.31 | 696 | 2.24 | 1.92 | 8 | 0.01 | 0.02 | 11.39 | 0.01 | H17 | Au |
incl. | 196.01 | 197.31 | 695 | 1.30 | 1.11 | 12 | 0.01 | 0.01 | 18.19 | 0.01 | H17 | Au |
Quality Control
Drill cores are NQ size. Drill core samples, limited by apparent mineralization contacts or shear/alteration contacts, were split into halves by saw cutting. The half cores are stored in the Company’s core shacks for future reference and checks, and the other half core samples are shipped in securely sealed bags to the Chengde Huakan 514 Geology and Minerals Test and Research Institute in Chengde, Hebei Province, China, 226 km northeast of Beijing, the Zhengzhou Nonferrous Exploration Institute Lab in Zhengzhou, Henan Province, China, and the Analytical Lab of the Inner Mongolia Geological Exploration Bureau in Hohhot, Inner Mongolia, China. All the three labs are ISO9000 certified analytical labs. For analysis, the sample is dried and crushed to minus 1 mm and then split to a 200-300 g 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 5 m along strike. Both the mineralized vein and the altered wall rocks are cut by continuous chisel chipping. Sample length ranges from 0.2 m to more than 1 m, 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 200 g sample of minus 160 mesh is prepared for assay. A duplicate sample of minus 1 mm 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 procedure is adopted to monitor the analytical quality at each lab. Certified reference materials, pulp duplicates and blanks are inserted into each batch of lab 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 approximately 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.
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