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Silvercorp Intersects Vein T15W2 With 1.74 Metres True Width Grading 3,911 Grams per Tonne Silver, 6.22% Lead, 2.11% Zinc and 0.55% Copper at the TLP Mine, Ying Mining District, China

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Silvercorp Intersects Vein T15W2 With 1.74 Metres True Width Grading 3,911 Grams per Tonne Silver, 6.22% Lead, 2.11% Zinc and 0.55% Copper at the TLP Mine, Ying Mining District, China

 

 

 

 

 

Silvercorp Metals Inc. (TSX: SVM) (NYSE American: SVM) is pleased to report results from its 2021 exploration programs at the TLP mine, Ying Mining District, Henan Province, China. Extensive exploration drilling and tunneling are ongoing at the TLP mine, and all other mines at the Ying Mining District.

 

From October 1, 2020 to May 31, 2021, 34,546 metres from a total of 196 diamond drill holes, including 161 underground holes and 35 surface holes, were completed at the TLP mine. Assay results for 193 holes have been received, with 108 holes intercepting mineralization. Currently, 13 rigs are drilling at the TLP mine.

 

Drilling Intersected High-Grade Veins in the Production Areas

 

The diamond drilling programs at the TLP mine targeted resource blocks of known silver-lead-zinc veins in the production areas that were missed by limited prior drilling and drifting tunnels, as a result of changes in the dip and 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 veins T15W, T15W1, T15W2, and T15W3. Other veins include T16E, T2, T2W, T3, T16E, T11, T1, T1a, T22, T23, T24, T33 and T35E1. Highlight of high-grade intercepts in the TLP production area:

 

  • Hole ZKG6AT15W304 intersected a 2.49 m interval (1.74 m true width) of vein T15W2 grading 3,911 grams per tonne silver, 6.22% lead, 2.11% zinc, 0.08 g/t gold and 0.55% copper at the 808 m elevation, which includes a 0.97 m interval (0.68 m true width) grading 9,901 g/t Ag, 15.30% Pb, 5.27% Zn, 0.19 g/t Au, and 1.39% Cu;
  • Hole ZKG6AT15W305 intersected a 1.62 m interval (1.11 m true width) of vein T15W3 grading 1,556 g/t Ag, 15.27% Pb, 0.24% Zn, 0.10 g/t Au, and 0.23% Cu at the 813 m elevation;
  • Hole ZKT3AT1W101 intersected a 4.00 m interval (2.56 m true width) of vein T23 grading 771 g/t Ag, 11.68% Pb, 0.23% Zn, 0.08 g/t Au, and 0.11% Cu at the 854 m elevation;
  • Hole ZKT7T3E02 intersected an 8.44 m interval (5.04 m true width) of vein T3E grading 523 g/t Ag, 5.10% Pb, 0.36% Zn, 0.11 g/t Au, and 0.13% Cu at the 1,086 m elevation, which includes a 4.20 m interval (2.51 m true width) grading 1,036 g/t Ag, 9.96% Pb, 0.67% Zn, 0.18 g/t Au, and 0.24% Cu at the 1,087 m elevation;
  • Hole ZKT23J001 intersected a 0.89 m interval (0.74 m true width) of vein T2 grading 1,283 g/t Ag, 8.60% Pb, 2.30% Zn, 4.22 g/t Au, and 1.30% Cu at the 676 m elevation;
  • Hole ZKTDB39T103 intersected a 2.90 m interval (2.03 m true width) of vein T3 grading 1,115 g/t Ag, 1.20% Pb, 0.09% Zn, 0.08 g/t Au, and 0.11% Cu at the 818 m elevation;
  • Hole ZKTDB05Y03_1 intersected a 0.52 m interval (0.51 m true width) of vein T35E1 grading 2,086 g/t Ag, 5.79% Pb, 0.62% Zn, 0.05 g/t Au, and 0.35% Cu at the 914 m elevation; and
  • Hole ZKTDB43T302 intersected a 1.04 m interval (0.72 m true width) of vein T3E grading 520 g/t Ag, 1.25% Pb, 0.05% Zn, 4.36 g/t Au, and 0.11% Cu at the 730 m elevation.

 

Surface and Underground Drilling Outside the TLP Mine’s Resource Area

 

Exploratory surface drilling in the east and south sides of the resource area in the TLP mine discovered high-grade silver-lead-zinc mineralization at higher elevations. These intercepts of veins T39E2, T17 and T38 are expected to expand the resources in these areas.

 

  • Hole ZKG4T15W113 intersected a 3.96 m interval (3.62 m true width) of vein T15W1 grading 1,086 g/t Ag, 0.93% Pb, 0.19% Zn, 0.19 g/t Au, and 0.15% Cu at the 672 m elevation;
  • Hole ZKTDB20T1701 intersected a 3.48 m interval from 170.40 m to 173.88 m (2.54 m true width) of vein T17, grading 675 g/t Ag, 0.92% Pb, 0.43% Zn, 0.01 g/t Au, and 0.15% Cu at the 893 m elevation, which includes a 0.78 m interval from 171.26 m to 172.04 m (0.57 m true width) grading 2,206 g/t Ag, 1.44% Pb, 0.71% Zn, 0.02 g/t Au, and 0.40% Cu at the 892 m elevation;
  • Hole ZKTDB27AT39E201 intersected a 0.81 m interval from 99.41 m to 100.22 m (0.56 m true width) of vein T39E2 grading 1,705 g/t Ag, 1.3% Pb, 0.35% Zn, 0.02% Au, and 0.06% Cu at the 803 m elevation; and
  • Hole ZKTDB25AT39E201 intersected a 1.71 m interval from 169.08 m to 170.79 m (0.46 m true width) of vein T39E2 grading 456 g/t Ag, 16.16% Pb, 2.55% Zn, 0.01% Au, and 0.11% Cu at the 785 m elevation.

 

 

Table 1: Selected intercepts from the 2021 drill programs at the TLP Mine

 

Hole ID From
(m)
To
(m)
Elevation
(m)
Interval
(m)
True Width
(m)
Ag
(g/t)
Pb
(%)
Zn
(%)
Au
(g/t)
Cu
(%)
Vein
ZKG02AT1101 8.63 9.48 835 0.85 0.56 789 2.25 0.36 0.05 0.08 T14E
ZKG02AT1101 134.30 135.77 782 1.47 0.94 124 0.42 0.35 0.05 0.06 T15
ZKG06AT15W101 88.62 89.37 780 0.75 0.54 149 1.89 0.38 0.02 0.05 T15Wa
ZKG06AT15W301 74.21 75.46 789 1.25 0.88 79 2.13 0.12 0.05 0.02 T15W1
ZKG06AT16E01 22.99 23.76 792 0.77 0.35 139 0.94 0.03 0.05 0.02 T16E
ZKG06J001 172.50 173.72 682 1.22 1.17 100 3.00 0.17 0.05 0.07 T15
ZKG06J004 116.53 117.12 820 0.59 0.56 71 2.02 0.08 0.05 0.02 T15
ZKG06J004 163.99 164.47 811 0.48 0.46 53 9.42 0.15 0.05 0.02 T11E
ZKG06J01 78.47 79.25 785 0.78 0.71 105 2.20 0.21 0.06 0.01 T15W1
ZKG06J01 138.49 139.04 773 0.55 0.50 235 1.01 0.14 0.05 0.08 T11
ZKG06J04 117.14 117.93 728 0.79 0.65 1,043 3.00 0.15 0.10 0.15 T15W
ZKG06T1101 66.08 67.18 827 1.10 0.92 48 2.85 0.23 0.18 0.02 T15W1
ZKG06T1102 77.45 78.18 785 0.73 0.57 59 2.18 0.60 0.02 0.01 T15W1
ZKG06T1102 138.01 138.93 773 0.92 0.72 101 1.08 0.04 0.02 0.01 T11
ZKG08AT1101 138.30 139.33 785 1.03 0.83 79 1.63 0.11 0.10 0.02 T11
ZKG08AT1101 146.80 148.27 784 1.47 1.22 59 2.27 0.11 0.10 0.01 T11E2
ZKG08S01_12 0.43 1.33 913 0.90 0.85 236 4.61 0.54 0.05 0.04 T15W3
ZKG08S01_12 31.74 32.67 517 0.93 0.92 159 0.26 0.46 0.05 0.05 T15a
ZKG0936 18.13 18.64 780 0.51 0.27 225 0.61 0.44 0.07 0.02 T16
ZKG0936 179.66 180.26 738 0.60 0.31 219 3.43 1.12 0.03 0.01 T11E1
ZKG10AT1102 98.36 98.87 823 0.51 0.48 196 1.68 0.16 0.05 0.03 T14E
ZKG10AT1102 144.53 145.59 815 1.06 1.02 223 0.68 0.11 0.10 0.08 T11E2
ZKG1217 53.03 53.57 801 0.54 0.30 180 0.74 0.23 0.03 0.07 T15W2
ZKG1218 145.13 146.13 743 1.00 0.95 262 1.17 0.11 0.05 0.03 T11E
ZKG1218 178.67 179.42 721 0.75 0.71 226 0.38 0.15 0.21 0.02 T12
ZKG12AT15W01 94.72 95.23 780 0.51 0.48 96 0.99 0.09 0.05 0.05 T15W
ZKG12AT15W01 254.59 255.09 688 0.50 0.45 349 0.81 0.30 0.05 0.02 T11E3
ZKG12AT15W101 155.03 155.78 768 0.75 0.39 242 3.61 0.22 0.05 0.05 T15
ZKG16AT1101 177.28 177.85 730 0.57 0.50 550 2.27 0.19 0.02 0.24 T11
ZKG4AT15W101 66.89 69.03 829 2.14 1.02 560 4.24 1.72 0.13 0.35 T15W1
ZKG4AT15W102 183.90 184.56 811 0.66 0.50 203 1.01 0.13 0.02 0.01 T11E2
ZKG4AT16E202 76.20 76.96 832 0.76 0.22 636 5.73 0.21 0.02 0.18 T15W1
ZKG4AT16E202 79.74 80.79 832 1.05 0.31 94 2.19 0.09 0.01 0.02 T16E2
ZKG4AT16E203 93.96 95.29 781 1.33 1.25 59 6.09 2.42 0.05 0.04 T15W3
ZKG4T15W113 137.93 141.89 672 3.96 3.62 1,086 0.93 0.19 0.19 0.15 T15W1
ZKG4T15W114 143.55 144.04 677 0.49 0.41 95 3.09 0.31 0.05 0.02 T15W
ZKG4T15W114 155.80 158.32 667 2.52 1.88 479 1.29 0.27 0.29 0.07 T11
ZKG6AT15W303 18.44 19.47 824 1.03 0.55 214 0.80 0.06 0.10 0.03 T11
ZKG6AT15W304 68.56 69.71 812 1.15 0.81 284 1.16 0.31 0.02 0.22 T15W3
ZKG6AT15W304 83.91 86.40 808 2.49 1.74 3,911 6.22 2.11 0.08 0.55 T15W2
including 84.67 85.64 808 0.97 0.68 9,901 15.30 5.27 0.19 1.39 T15W2
ZKG6AT15W305 63.47 64.13 816 0.66 0.45 200 6.61 0.13 0.05 0.04 T15W
ZKG6AT15W305 78.22 79.84 813 1.62 1.11 1,556 15.27 0.24 0.10 0.23 T15W3
ZKG6AT16E10 30.77 34.30 825 3.53 0.67 589 0.98 0.13 0.02 0.06 T16E
including 33.48 34.30 824 0.82 0.15 2,267 2.55 0.50 0.07 0.20 T16E
ZKG6AT16E11 22.71 24.10 827 1.39 0.79 528 3.12 0.05 0.02 0.04 T16E
including 23.50 24.10 827 0.60 0.34 1,089 7.19 0.11 0.04 0.07 T16E
ZKG8AT15W302 126.18 127.40 784 1.22 1.11 98 1.74 0.12 0.05 0.01 T15W
ZKG8AT16E201 81.49 82.36 746 0.87 0.79 177 2.34 0.21 0.05 0.09 T15W1
ZKT04T2E02 220.62 221.76 878 1.14 0.99 127 0.31 0.05 0.02 1.09 T3
ZKT05AT2301 106.40 111.30 875 4.90 3.30 97 1.00 0.08 0.29 0.03 T23
including 106.40 106.80 876 0.40 0.22 804 2.66 0.10 0.05 0.15 T24
ZKT05AT2302 101.11 101.70 877 0.59 0.41 326 2.75 0.10 0.12 0.31 T23
ZKT05AT2303 98.17 99.07 874 0.90 0.89 381 4.97 0.61 0.10 0.22 T23
ZKT0724 143.73 145.56 787 1.83 1.81 223 1.08 0.53 0.02 0.05 T14E
ZKT0725 158.91 161.61 750 2.70 2.53 433 1.96 0.93 0.05 0.18 T14E
ZKT07AT201 78.81 80.09 742 1.28 1.09 141 2.10 0.06 0.09 0.04 T1
ZKT07AT5E104 105.47 106.29 914 0.82 0.42 1,324 5.40 0.48 0.10 0.08 T21W
ZKT07AT5E105 134.62 135.99 908 1.37 0.83 28 3.57 0.19 0.02 0.00 T21
ZKT07T14E03 162.44 164.70 775 2.26 2.16 89 2.02 0.14 0.03 0.03 T14E
ZKT07T14E05 156.81 157.41 753 0.60 0.57 71 4.69 0.11 0.01 0.09 T14E
ZKT07T1601 19.42 20.15 868 0.73 0.31 192 0.10 0.33 0.02 0.01 T16
ZKT07Y04 23.92 24.64 777 0.72 0.68 762 9.07 0.54 0.83 0.12 T2W
ZKT07Y04 50.53 51.10 796 0.57 0.55 411 2.91 0.04 1.92 0.31 T22
ZKT0808 211.75 212.43 871 0.68 0.22 1,070 1.47 0.34 0.10 0.96 T2
ZKT0809 64.21 65.00 889 0.79 0.74 155 0.19 0.08 0.01 0.01 T1W
ZKT09Y17 206.29 207.09 738 0.80 0.68 30 6.16 0.11 0.10 0.01 T33E1
ZKT09Y17 404.57 405.11 586 0.54 0.50 207 0.79 0.36 0.10 0.01 T3
ZKT09Y21 104.55 106.09 806 1.54 1.14 161 18.39 0.23 0.10 0.11 T33
ZKT11Y25 175.74 176.56 744 0.82 0.77 97 1.04 0.06 0.05 0.01 T1W1
ZKT18AT1703 207.26 208.08 894 0.82 0.64 211 1.50 1.66 0.01 0.03 T22E
ZKT19AT33W303 24.02 24.59 813 0.57 0.56 135 0.23 0.22 0.01 0.03 T33W1
ZKT19AT33W303 51.83 52.86 821 1.03 1.01 25 4.74 0.80 0.01 0.02 T22E1
ZKT19T33W301 78.12 79.42 786 1.30 0.45 15 6.90 0.37 0.05 0.01 T33W1
ZKT1AT2301 73.57 74.95 886 1.38 1.27 147 0.90 0.30 0.05 0.00 T33
ZKT1T1602 98.30 98.82 878 0.52 0.50 206 1.16 0.66 0.05 0.03 T16E
ZKT1T1603 95.73 96.36 886 0.63 0.63 136 0.97 0.71 0.05 0.02 T16
ZKT1T1603 183.99 184.98 821 0.99 0.57 334 0.28 0.71 0.05 0.03 T16E1
ZKT21C03 145.04 145.57 789 0.53 0.44 191 5.63 0.25 0.21 0.02 T33W5
ZKT21C05 166.15 166.75 786 0.60 0.46 167 1.73 2.11 0.21 0.03 T33W4
ZKT21T14E09 87.07 87.60 773 0.53 0.13 1,148 3.19 2.24 0.09 0.20 T38
ZKT21T22E02 216.94 217.44 768 0.50 0.48 105 4.67 0.67 0.10 0.08 T3
ZKT21Y35 193.17 194.17 723 1.00 0.64 32 13.18 0.07 0.10 0.11 T14E
ZKT23J001 99.39 100.28 676 0.89 0.74 1,283 8.60 2.30 4.22 1.30 T2
ZKT23J002 107.39 108.15 721 0.76 0.58 705 5.76 0.03 0.21 0.24 [1]
ZKT23J003 112.16 113.16 665 1.00 0.81 134 4.21 1.85 0.82 0.69 T2
ZKT2707 105.98 106.55 780 0.57 0.23 292 0.39 0.14 0.13 0.01 T39W
ZKT2708 153.41 154.07 751 0.66 0.25 396 1.79 2.20 0.01 0.05 T39E2
ZKT2708 161.96 163.99 744 2.03 1.54 125 0.34 0.43 1.90 0.01 T39
ZKT27T39W01 83.89 84.43 842 0.54 0.44 145 1.56 0.47 0.03 0.01 T39E2
ZKT29AT202 97.82 99.61 676 1.79 0.17 122 2.87 0.99 0.43 2.65 T2E
ZKT31AT35E03 194.56 195.27 686 0.71 0.46 116 20.00 4.97 0.33 0.13 T35E
ZKT31AT35E03 261.45 262.67 663 1.22 1.11 147 0.36 0.09 0.10 0.02 T35E1
ZKT33T31W303 34.97 36.14 898 1.17 1.14 340 0.44 0.54 0.06 0.02 T31W
ZKT33T31W303 120.70 121.25 844 0.55 0.18 335 4.24 0.42 0.15 0.01 T21
ZKT33T31W304 36.06 37.85 895 1.79 1.73 303 0.55 0.35 0.03 0.04 T31W
ZKT33T31W304 56.10 57.82 881 1.72 1.66 552 0.94 0.27 0.06 0.03 T31W1
ZKT33T31W305 58.82 60.10 878 1.28 0.59 187 0.10 0.10 0.03 0.01 T31W1
ZKT39AT31W01 54.66 55.61 786 0.95 0.80 200 0.42 0.13 0.57 0.02 T31W1
ZKT39AT31W02 15.33 16.77 795 1.44 1.42 26 5.22 0.19 0.02 0.01 T20
ZKT39AT31W02 109.52 110.65 766 1.13 0.32 374 3.99 1.85 0.75 0.34 T3E
ZKT39AT31W02 128.06 129.11 760 1.05 0.30 27 2.84 0.06 0.12 0.02 T3
ZKT3AT1W101 98.48 102.48 854 4.00 2.56 771 11.68 0.23 0.08 0.11 T23
ZKT3AT1W101 203.59 204.22 810 0.63 0.58 160 1.61 0.46 0.06 0.01 [1]
ZKT3AT1W104 96.12 96.84 840 0.72 0.47 326 17.38 0.57 0.06 0.08 T23
ZKT5AT1W101 178.42 179.20 632 0.78 0.68 109 0.33 0.13 0.15 0.22 T1W1
ZKT7T3E01 46.12 47.78 1,094 1.66 1.07 139 2.44 0.11 0.05 0.08 T3E
ZKT7T3E02 64.01 72.45 1,086 8.44 5.04 523 5.10 0.36 0.11 0.13 T3E
including 64.86 69.06 1,087 4.20 2.51 1,036 9.96 0.67 0.18 0.24 T3E
ZKT9AT1W102 208.22 208.83 645 0.61 0.60 72 1.52 0.07 0.10 0.44 T1
ZKT9AT1W102 253.06 253.66 620 0.60 0.59 97 0.26 0.05 0.10 2.53 T2W
ZKT9AT1W103 14.34 14.91 761 0.57 0.48 172 0.33 0.18 0.12 0.01 T33
ZKT9AT1W103 227.84 229.66 667 1.82 1.76 520 0.74 2.04 0.16 0.06 T1
ZKT9AT1W103 245.94 246.49 659 0.55 0.53 211 0.10 0.44 0.12 0.02 T1E
ZKT9AT1W104 15.32 15.92 757 0.60 0.49 329 0.59 0.10 0.05 0.32 T33
ZKT9AT1W104 220.95 221.44 661 0.49 0.42 319 6.86 1.16 0.05 0.06 T1a
ZKT9AT1W105 164.39 166.91 644 2.52 2.30 65 2.41 0.26 0.12 0.11 T1W1
ZKT9AT1W105 190.36 191.37 625 1.01 0.92 157 0.12 0.03 0.05 0.01 T1W
ZKT9AT1W107 14.38 15.54 763 1.16 0.96 107 0.58 0.06 0.05 0.05 T33
ZKTA1AT14E01 158.29 159.55 782 1.26 0.42 53 5.65 0.35 0.04 0.06 T14E
ZKTA3AT14E01 141.61 142.93 781 1.32 0.81 53 7.35 0.27 0.05 0.07 T14E
ZKTA3AT14E02 93.90 94.66 773 0.76 0.64 243 0.41 0.07 0.10 0.03 T38
ZKTA5AT14E02 137.25 138.05 776 0.80 0.80 63 3.17 0.21 0.05 0.03 T14E
ZKTDB05AT5W101 101.19 102.35 1,035 1.16 0.62 122 0.51 0.19 0.03 0.01 T4
ZKTDB05Y03_1 156.09 156.66 938 0.57 0.35 141 1.17 0.25 0.05 0.05 [1]
ZKTDB05Y03_1 185.29 185.81 914 0.52 0.51 2,086 5.79 0.62 0.05 0.35 T35E1
ZKTDB06AT22W01 41.51 46.28 1,137 4.77 1.88 196 0.46 0.07 0.10 0.03 T1E
ZKTDB06AT22W01 50.86 52.14 1,133 1.28 0.51 94 0.88 0.11 0.10 0.03 T2W
ZKTDB06AT22W03 69.09 70.40 1,113 1.31 1.08 115 5.76 0.15 0.10 0.02 T1E
ZKTDB20T1701 170.40 173.88 893 3.48 2.54 675 0.92 0.43 0.01 0.15 T17
including 171.26 172.04 892 0.78 0.57 2,206 1.44 0.71 0.02 0.40 T17
ZKTDB20T1704 88.90 89.42 971 0.52 0.19 789 0.92 0.09 0.03 0.06 T17
ZKTDB25AT39E201 169.08 170.79 785 1.71 0.46 456 16.16 2.55 0.01 0.11 T39E2
ZKTDB27AT39E201 89.44 90.08 811 0.64 0.44 190 1.26 3.19 0.01 0.03 T39W
ZKTDB27AT39E201 99.41 100.22 803 0.81 0.56 1,705 1.30 0.35 0.02 0.06 T39E2
ZKTDB27AT5E111 122.45 123.21 955 0.76 0.74 200 1.34 0.67 0.05 0.01 T39E
ZKTDB33AT31W301 32.88 33.47 902 0.59 0.23 233 0.28 0.10 0.08 0.01 [1]
ZKTDB33AT31W301 49.38 50.30 893 0.92 0.36 110 1.15 0.20 0.06 0.02 T31W1
ZKTDB39T101 144.95 145.73 823 0.78 0.51 199 3.69 0.07 0.05 0.03 T2
ZKTDB39T103 66.76 67.63 892 0.87 0.64 151 0.80 0.05 0.03 0.01 T1W
ZKTDB39T103 147.21 150.11 818 2.90 2.03 1,115 1.20 0.09 0.03 0.11 T3
ZKTDB43AT303 176.86 177.44 797 0.58 0.37 165 0.27 0.03 0.02 0.01 T1W
ZKTDB43T301 299.35 300.13 712 0.78 0.58 9 3.57 0.05 0.17 0.04 T35
ZKTDB43T302 165.24 166.38 807 1.14 0.84 275 0.26 0.02 0.05 0.01 T23E
ZKTDB43T302 170.81 171.99 801 1.18 0.85 38 3.43 0.10 0.10 0.01 T1
ZKTDB43T302 210.24 211.23 764 0.99 0.70 407 0.90 0.21 0.47 0.17 T3
ZKTDB43T302 243.39 247.69 731 4.30 3.01 171 2.19 0.11 1.25 0.04 T3E
including 246.65 247.69 730 1.04 0.72 520 1.25 0.05 4.36 0.11 T3E
[1] No vein id assigned

 

Tunneling Program at the TLP Mine

 

In addition to the drilling program, 4,526 m of exploration drift tunneling were developed at the TLP mine during this period. The exploration tunneling, comprised of drifting, cross-cutting and raising, was driven along and across major mineralized vein structures to upgrade the drill defined mineral resources and test for new parallel and splay structures, and are summarized in the following table.

 

 

Mine Major Target Veins Elevation
(m)
Total
Tunneling
(m)
Channel
Samples
Collected
Drift
Included
(m)
Total Mineralization Exposed by Drifts
Length
(m)
Average
True Width
(m)
Ag
(g/t)
Pb
(%)
Zn
(%)
TLP T1, T2, T3, T3E, T5,
T26, T26E, T14E,
15W, T15W3,
T33E, T23, T11, T16,
T17, T14, T35E, T38,
T39E2, T39E, T27
510-1070 7,020 3,461 4,526 1,667 0.54 276 3.06 0.60
[1] Mineralization is defined by silver equivalent value (AgEq) greater than or equal to 130 g/t at the TLP mine.
(Formulae used for AgEq calculation: TLP=34.19*Pb%+Ag g/t)

 

Highlights of selected mineralized zones exposed in the drift tunnels:

  • Drift Tunnel PD890-T16E-890-2NYM exposed mineralization 85 m long and 0.64 m wide (true width) grading 721 g/t Ag, 2.62% Pb and 0.72% Zn within vein T16E on the 893 m level;
  • Drift Tunnel PD820-T22E-700-16NYM exposed mineralization 30 m long and 0.81 m wide (true width) grading 692 g/t Ag, 3.43% Pb and 1.05% Zn within vein T22E on the 704 m level;
  • Drift Tunnel PD960-T33-990-13NYM exposed mineralization 20m long and 0.44 m wide (true width) grading 1,841 g/t Ag, 1.81% Pb and 1.31% Zn within vein T33 on the 960m level; and
  • Drift Tunnel PD846-T11E-846-10SYM exposed mineralization 110m long and 0.68 m wide (true width) grading 427 g/t Ag, 2.26% Pb and 0.44% Zn within vein T11E on the 858 m level.

 

 

Table 2: Selected mineralized zones exposed by drift tunneling at the TLP mine

 

Tunnel ID Vein Elevation
(m)
Ore Length
(m)
True Width
(m)
Ag
(g/t)
Pb
(%)
Zn
(%)
PD846-T11E-846-10SYM T11E 858 80.00 0.68 427 2.26 0.44
PD930-T15W-930-12NYM T15W 922 15.00 0.58 485 3.59 0.35
PD930-T15W-930-12SYM T15W 922 55.00 0.56 188 2.20 0.23
PD820-T15W1-700-4SYM T15W1 700 70.00 0.61 84 5.17 0.22
PD820-T15W3-795-8NYM3 T15W2 800 20.00 0.45 172 5.51 0.68
PD820-T15W3-755-8NYM T15W2 761 15.00 0.62 359 5.72 1.05
PD960-T16E-960-1SYM T16E 957 45.00 0.30 494 2.46 2.02
PD890-T16E-890-2NYM T16E 893 85.00 0.64 721 2.62 0.72
PD820-T17W-700-14SYMA T17 702 20.00 0.92 153 8.27 0.12
PD730-T1W1-700-13NYM T1W1 707 15.00 0.36 78 3.09 0.67
PD820-T22E-700-16NYM T22E 704 20.00 0.81 692 3.43 1.05
PD960-T33-990-13NYM T33 996 20.00 0.44 1,841 1.81 1.31
PD890-T33-890-23NYM T33 897 30.00 0.60 261 1.22 0.13
PD730-T33W2-700-15NYM T33W2 706 15.00 0.34 14 6.04 0.06
PD800-T39E2-800-23NYM T39E2 800 45.00 0.48 173 2.07 0.95
PD820XPD-T39E2-700-25NYM T39E2 700 15.00 0.59 82 3.02 0.88

 

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 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 by 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 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.

 

Posted June 1, 2021

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