Silvercorp Reports High-Grade Mineralization Discovery beneath Current Production Levels within Major Vein Structures at HZG, HPG and LMW Mines, Ying Mining District, China
-- Published: Tuesday, 5 September 2017 | Print | Disqus
Trading Symbol: TSX: SVM NYSE AMERICAN: SVM
VANCOUVER , Sept. 5, 2017 /CNW/ - Silvercorp Metals Inc. ("Silvercorp" or the "Company") (TSX:SVM / NYSE AMERICAN: SVM) is pleased to report results of the first half of its 2017 exploration programs at the HZG, HPG and LMW mines, Ying Mining District, Henan Province , China.
In the first half of 2017, the Company completed a total of 21,675 meters ("m") of underground diamond drilling and 7,989m of exploration tunneling at HZG, HPG and LMW mines. Exploration tunneling exposed significant high-grade mineralized zones beneath the current production levels within major production veins, especially HZ20 at the HZG mine and H17 at the HPG mine. Underground drilling continuously extended the major mineralized vein structures along strike and downdip at the three mines.
Highlights of selected mineralized zones exposed in exploration drift tunnels:
Drift Tunnel PD820-HZ20-600-133-SYM exposed mineralization of 66m long and 1.21m wide (true width) grading 1,389 grams per tonne ("g/t") silver ("Ag"), 0.40% lead ("Pb"), 0.67% zinc ("Zn") and 2.78% copper ("Cu") within vein structure HZ20 on the 600m level at HZG mine;
Drift Tunnel PD3-H17-251-10NYM exposed mineralization of 61m long and 1.53m wide (true width) grading 66g/t Ag, 5.41% Pb, 2.59% Zn and 1.13g/t gold ("Au") within vein H17 on the 251m level at HPG mine; and
Drift Tunnel XPDN-LM19W1-700-3NYM exposed mineralization of 80m long and 1.01m wide (true width) grading 514g/t Ag, 3.22% Pb and 0.86% Zn within vein structure LM19W1 on the 700m level at LMW mine.
Highlights of selected intersections of drill holes:
Hole ZK11905 at HZG mine intersected an 1.60m interval from 185.73m to 187.33m, 0.91m true width, of vein HZ20 grading 999g/t Ag, 1.84% Pb, 0.38% Zn and 1.12% Cu at the 761m elevation;
Hole ZKX116F03 at LMW mine intersected a 0.95m interval from 60.92m to 61.87m, 0.82m true width, of vein LM33 grading 1,174g/t Ag, 8.34% Pb and 0.78% Zn at the 583m elevation; and
Hole ZKX107N01 at LMW mine intersected a 3.13m interval from 464.55m to 467.68m, 2.17m true width, of vein LM14 grading 279g/t Ag, 1.55% Pb and 0.06% Zn at the 519m elevation.
Diamond drill holes are designed to define and upgrade inferred mineral resource blocks and test for new mineral resources. Underground drilling is mainly conducted from current production levels to delineate the downdip and along-strike extensions of known mineralized vein structures in the production area and test for new veins in the previous less-explored areas.
The first half of 2017 drilling programs at HZG, HPG and LMW mines are briefly summarized in the following table:
Major Target Veins
Meters Drilled
Holes Completed
Samples Collected
Holes with Assay Received*
Holes Intercepted Vein Structures
Holes Intercepted Mineralization
LMW Mine
LM12, LM13, LM14, LM19, LM19W1, LM19W2, LM30W
9,622
28
515
35
35
19
HPG Mine
H12, H21, H29
7,310
23
245
23
23
12
HZG Mine
HZ10, HZ11, HZ20, HZ22
4,743
15
255
18
18
7
*Including holes drilled in late 2016.
The 2017 exploration tunneling, comprising drifting, crosscutting and raising, was driven along and across major mineralized vein structures to upgrade drill defined mineral resources and test for new parallel and splay structures.
The first half of 2017 tunneling programs at HZG, HPG and LMW mines are briefly summarized in the following table:
Tables 1 and 2 below list assay results of some selected mineralized intersections in drill holes and mineralized zones exposed in drift tunnels in the first half of 2017 exploration programs.
Table 1: Selected drilling results from the 2017 drilling programs at HZG, HPG and LMW mines
Hole ID
From (m)
To (m)
Elevation (m)
Interval (m)
True Width (m)
Ag (g/t)
Pb (%)
Zn (%)
Vein
Remarks
HZG Mine
Cu (%)
ZK14902
56.83
57.24
595
0.41
0.16
95
3.07
0.32
0.11
HZ22E
Test*
ZK11905
181.46
181.98
762
0.53
0.30
144
0.26
0.13
0.16
HZ20Branch
Test
185.73
187.33
761
1.60
0.91
999
1.84
0.38
1.12
HZ20
Test
ZK15108
280.84
282.08
370
1.24
0.67
372
0.44
0.13
0.16
HZ20
Test
283.80
284.24
367
0.44
0.23
127
0.13
0.47
0.58
HZ20W-Branch
Test
ZK11702
258.85
259.15
739
0.31
0.23
437
0.30
0.12
0.66
HZ20
Test
ZK11507
252.83
254.39
767
1.56
1.35
223
1.20
0.22
0.50
HZ20
Test
ZK4309
254.19
254.86
505
0.67
0.64
72
1.07
0.53
0.54
HZ22E
Test
354.55
356.44
450
1.89
1.63
279
0.10
0.06
0.09
HZ26
Test
HPG Mine
Au (g/t)
ZK3106
178.33
179.09
516
0.76
0.46
20
8.43
2.45
0.05
H12W
Test
ZK2909
3.25
7.88
626
4.63
1.40
24
0.20
0.01
1.63
H12E
Infill**
10.31
10.71
621
0.40
0.22
40
2.95
0.16
1.19
H12E_Branch
Test
ZK1213
163.12
163.74
602
0.62
0.30
6
1.30
0.03
1.54
H18_1
Test
ZK2709
122.72
123.12
528
0.40
0.24
51
6.05
0.09
0.03
H12E2
Test
ZK3615
201.15
202.24
501
1.09
0.82
4
0.05
0.01
2.13
H21
Stepout***
ZK3107
3.08
4.99
626
1.91
0.67
6
0.06
0.01
2.04
H12E
Infill
ZK3107
224.15
228.30
445
4.15
2.20
22
4.30
0.28
0.05
H12
Stepout
ZK4101
105.00
105.48
588
0.48
0.40
24
1.54
1.30
0.28
H12E1
Test
231.22
231.56
537
0.34
0.31
52
1.75
0.92
0.99
H12E
Test
ZK4102
271.37
272.15
456
0.78
0.64
45
1.95
1.22
0.53
H12E
Test
ZK2530
303.72
305.13
444
1.41
0.94
17
0.14
0.12
1.92
H29
Test
ZK3901
102.88
103.60
579
0.72
0.47
17
0.44
0.29
1.72
H12E1
Test
251.28
251.76
511
0.48
0.36
139
8.31
0.72
0.13
H12E
Test
ZK3903
83.24
83.85
562
0.61
0.29
27
4.07
1.92
0.16
H12
Test
LMW Mine
ZKX130W01
150.80
151.49
863
0.69
0.69
186
0.26
0.43
LM8_5
Test
ZKX107N01
464.55
467.68
519
3.13
2.17
279
1.55
0.06
LM14
Stepout
ZKX109N01
499.27
499.72
472
0.45
0.24
69
3.85
0.66
LM14
Stepout
ZKX103N04
390.39
392.54
407
2.15
1.27
106
1.08
0.11
LM14
Test
ZKX100N01
245.07
246.70
512
1.63
0.93
195
0.34
0.05
LM14
Test
ZKX02Q00
244.05
248.27
823
4.22
3.67
146
3.93
0.14
LM17
Test
ZKX13063
140.42
143.14
784
2.72
1.88
290
0.33
0.15
LM19
Test
ZKX12261
183.45
183.71
803
0.26
0.18
96
2.17
0.18
LM19
Test
ZKX107N01
117.73
119.58
726
1.85
1.18
225
0.31
0.09
LM19W3
Test
ZKX11651
100.51
101.27
537
0.76
0.68
99
12.02
0.05
LM32E
Test
ZKX116F03
60.92
61.87
583
0.95
0.82
1,174
8.34
0.78
LM33
Test
ZKX120F01
77.14
77.95
562
0.81
0.58
645
2.58
0.56
LM33
Test
*Test: intersections in open areas without known mineralization for new resource delineation
**Infill: intersections within known resource blocks for resource upgrade
***Stepout: intersections adjacent to existing resource blocks for resource expansion
Table 2: Selected mineralized zones exposed by drift tunneling at HZG, HPG and LMW mines
Tunnel ID
Vein
Level (m)
Length (m)
True Width (m)
Ag (g/t)
Pb (%)
Zn (%)
HZG Mine
Cu (%)
PD820-HZ20-650-123-NYM
HZ20
650
30
0.45
1,865
0.51
0.54
3.32
PD820-HZ20-600-133-SYM
HZ20
600
66
1.21
1,389
0.40
0.67
2.78
PD820-HZ20-600-133-NYM
HZ20
600
48
0.70
553
0.27
0.42
1.75
PD820-HZ20-550-133-SNYM
HZ20
550
20
0.67
320
0.22
0.78
1.32
PD820-HZ22-770-N1-SNYM
HZ22
770
25
0.81
873
0.60
0.23
0.62
PD810-HZ22-700-49-NYM
HZ22
700
60
0.59
172
1.62
0.22
0.33
PD810-HZ22W-700-47A-SYM
HZ22W
700
20
0.33
95
6.28
0.11
0.12
PD820-HZ23-650-47A-SYM
HZ23
650
95
0.91
474
2.86
0.14
0.21
PD810-HZ27-700-47A-NYM
HZ27
700
30
0.50
390
1.40
0.24
0.20
HPG Mine
Au (g/t)
PD2-H17-580-4NYM
H17
580
55
0.91
31
4.35
0.04
0.26
PD3-H17-310-32NYM
H17
310
24
2.27
162
10.79
3.02
1.40
PD3-H17-251-10NYM
H17
251
61
1.53
66
5.44
2.59
1.13
PD3-H17-200-12NYM
H17
200
50
0.82
63
3.42
0.33
0.58
PD3-H17-150-10NYM
H17
150
102
1.55
48
2.90
3.77
0.94
LMW Mine
XPDS-LM17-770-26SYM
LM17
770
50
0.78
115
1.97
0.18
XPDS-LM17-675-26SYM
LM17
675
25
0.74
83
1.53
0.06
XPDN-LM19W1-700-3NYM
LM19W1
700
80
1.01
514
3.22
0.86
SJ969-LM19W2-600-120NYM
LM19W2
600
35
0.47
41
4.92
0.12
SJ969-LM19W2-500-114SYM
LM19W2
500
20
1.05
369
3.71
0.29
PD969SJ-LM31-550-114SNYM
LM31
550
20
0.36
291
6.92
0.21
PD969SJ-LM31-550-114NYM
LM31
550
40
0.46
230
6.56
0.06
PD924-T27E-924-112SYM
T27E
924
45
0.84
194
4.48
0.38
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 Zhenzhou Nonferrous Exploration Institute Lab in Zhengzhou , Henan Province , China , and both labs are ISO9000 certified analytical lab. 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 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 service. 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 at 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 the 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 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.
Ruijin Jiang , P. Geo, reviewed the exploration data and prepared the scientific and technical information regarding exploration results contained herein. Alex Zhang , P. Geo, VP exploration of the Company, is the Qualified Person on the project as defined under National Instrument 43-101 and he has verified and approved the contents of this news release.
About Silvercorp
Silvercorp is a low-cost silver-producing Canadian mining company with multiple mines in China . The Company's vision is to deliver shareholder value by focusing on the acquisition of under developed projects with resource potential and the ability to grow organically. For more information, please visit our website at www.silvercorp.ca.
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: 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 Annual Information Form for the year ended March 31, 2017 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.
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