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Endeavour Silver Reports Positive Exploration Results for the Parral Project in Chihuahua, Mexico Including 332 gpt Silver over 13.1 m True Width

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Endeavour Silver Corp. (NYSE: EXK) (TSX: EDR) reports positive results from its ongoing 2019 exploration program on the Parral project in Chihuahua, Mexico.  Endeavour has completed 15 surface and underground drill holes totaling 3,160 meters (m) and 462 underground channel samples in 3 blocks in the Sierra Plata mine on the Veta Colorada vein system to date. 


The Veta Colorada (including the Sierra Plata and El Verde mines) was a past producing mining operation owned by Grupo Mexico that closed in 1991 due to the low silver price. Endeavour acquired the Veta Colorada properties in 2016 along with the past producing San Patricio and Palmilla mines and related silver veins in the Parral district. 


The Veta Colorada is a major silver vein structure that ranges from 1 to 30 m thick (average 5-10 m), was mined on 7 levels down to 300 m depths below surface in places and has been traced for 7 kilometers.


Surface and Underground Drill Results


Endeavour has drilled 6 surface and 9 underground drill holes so far this year, about half of the planned program, to test an area 600 m long by 500 m deep in and around the Sierra Plata mine workings. Every hole intersected strong silver mineralization, mostly adjacent to old workings, indicating that historic mining focused on very high silver grades and left behind significant high grade silver mineralization (view the Veta Colorada longitudinal section here).


Surface drilling highlights include 346 grams per tonne (gpt) silver over 9.6 m true width (11.1 oz per ton (opT) over 31.5 feet) in hole VCS-02.  Underground drilling highlights include 332 gpt silver over 13.1 m true width (10.7 opT over 43.0 feet) in hole VCU-05.  Several of the surface drill holes intersected old mine workings so the reported mineralized intervals represent only a part of the original silver mineralized zones. 


Complete drill results are shown in the following table:


Surface Drill Results
Hole Structure From True width Ag
(m) (m) (gpt)
VCS-01 Old Working (VC) 244.45 5.2 Old Working
Veta Colorada 250.35 0.9 160
Including 250.70 0.2 412


Hw Veta Colorada 189.70 9.6 346
Including 192.50 0.5 784
Veta Colorada 201.45 5.0 283
Including 204.95 0.5 975


Hw Veta Colorada 202.50 3.0 242
Including 204.00 0.5 299
Veta Colorada 206.30 1.1 265
Old Working (VC) 207.40 4.1 Old Working
Veta Colorada 211.50 1.5 263
Including 211.50 0.2 461
VCS-04 Old Working (VC)
VCS-05 Old Working (HW VC) 142.70 1.7 Old Working
Hw Veta Colorada 147.85 1.4 293
Including 148.35 0.4 457
Old Working (VC) 157.40 5.2 Old Working
Veta Colorada 165.00 0.9 855
Including 165.60 0.4 1,170
VCS-06 Veta Colorada 236.50 1.1 228
Old Working VC 237.70 1.5 Old Working
Including 236.95 0.7 320
Underground Drill Results
VCU-01 Veta Colorada 172.55 3.7 300
  Including 176.15 0.2 815
VCU-02 Veta Colorada 107.60 3.3 452
  Including 110.35 0.4 842
  Breccia 119.85 1.5 234
  Including 119.85 0.2 695
  Breccia 125.35 1.8 225
  Including 125.95 0.4 350
VCU-03 Veta Colorada 59.95 8.2 326
  Including 62.80 0.3 727
VCU-04 Veta Colorada 154.10 7.7 253
  Including 160.80 0.4 1,200
VCU-05 Veta Colorada 87.00 13.1 332
  Including 88.80 0.2 3,770
  Breccia 114.85 0.9 225
  Including 115.30 0.4 307
  Breccia 127.15 2.2 186
  Including 129.10 0.6 224
VCU-06 Veta Colorada 109.45 1.0 104
  Including 110.70 0.1 382
VCU-07 Veta Colorada 66.40 13.0 154
  Including 67.30 0.3 426
VCU-08 Veta Colorada 174.80 3.2 281
  Including 174.80 0.4 527
VCU-09 Veta Colorada 171.90 1.2 549
Including 172.55 0.5 801


Underground Channel Sample Results


Endeavour sampled 3 blocks on level 7 to test an area 250 m long by 25 m vertically within the north part of the Sierra Plata mine. Only minor work was needed to re-access and make safe the historic main haulage ramp into the mine.  The Company dewatered the lowest mine levels last year, sampled old mine fill on levels 1 to 6, and recognized the opportunity to drill unmined high grade in all mine levels and sample unmined high grade in the lower mine levels.


Channel sampling highlights include 2 samples exceeding 1,000 gpt such as 1,705 gpt silver over 0.55 m true width in channel 7+66 and 1,480 gpt silver over 0.95 m true width in channel 7+69.  The full width of the vein is not exposed in many of the mine workings so the sampling results are only partly indicative of the silver mineralization. 


The highest grade samples in the channels are shown in the following table:



Block Channel Sample ID Structure Width (m) Ag (g/t)
8-VC-16-8 7+7 PAR-1800 Bx Hw 0.90 578
8-VC-16-8 7+7 PAR-1802 Hw ? 1.20 746
8-VC-16-8 7+8 PAR-1806 Bx Hw 1.00 557
8-VC-16-8 7+8 PAR-1807 Hw ? 1.10 590
8-VC-16-8 7+11 PAR-1819 Bx Hw 1.10 546
8-VC-16-8 7+12 PAR-1825 Bx Hw 1.50 544
8-VC-16-8 7+12 PAR-1826 Bx Hw 0.80 911
8-VC-16-8 7+20 PAR-1867 Bx Hw 0.70 681
8-VC-16-8 7+20 PAR-1868 Bx Hw 1.00 676
8-VC-16-8 7+21 PAR-1869 Vn – F 0.30 547
8-VC-16-8 7+21 PAR-1874 Bx Hw 1.10 767
8-VC-16-8 7+23 PAR-1886 Bx Hw 0.90 509
8-VC-16-8 7+30 PAR-1930 Vn 1.00 527




Block Channel Sample ID Structure Width (m) Ag (g/t)
8-VC-17-8 7+33 PAR-1951 Bx Hw 1.10 438
8-VC-17-8 7+37 PAR-1974 Bx Hw 0.80 503
8-VC-17-8 7+47 PAR-2044 Vn-F 0.45 340
8-VC-17-8 7+48 PAR-2054 Bx Hw 0.90 568
8-VC-17-8 7+48 PAR-2055 Bx Hw 1.20 369
8-VC-17-8 7+48 PAR-2056 Bx Hw 0.90 339
8-VC-17-8 7+51 PAR-2081 Bx Hw 1.00 377
8-VC-17-8 7+52 PAR-2085 Fw 0.70 346
8-VC-17-8 7+55 PAR-2108 Vn-F 0.55 522
8-VC-17-8 7+62 PAR-2153 Vn-F 0.50 349
8VC-17-8 7-55 (-A) PAR-2515 Tcog Sil-Hem 0.90 376
8VC-17-8 7-58 (-A) PAR-2518 Tcog Sil-Hem 1.10 903




Block Channel Sample ID Structure Width (m) Ag (g/t)
7-VC-20, 8-VC-2-6 7+64 PAR-2167 Hw 0.85 439
7-VC-20, 8-VC-2-6 7+66 PAR-2182 Vn 0.95 402
7-VC-20, 8-VC-2-6 7+66 PAR-2184 Vn 0.90 721
7-VC-20, 8-VC-2-6 7+66 PAR-2185 Hw 0.55 1705
7-VC-20, 8-VC-2-6 7+66 PAR-2186 Hw 0.70 312
7-VC-20, 8-VC-2-6 7+67 PAR-2194 Vn 0.75 461
7-VC-20, 8-VC-2-6 7+67 PAR-2195 Vn 0.65 305
7-VC-20, 8-VC-2-6 7+68 PAR-2201 Vn 0.80 423
7-VC-20, 8-VC-2-6 7+68 PAR-2204 Vn 1.00 669
7-VC-20, 8-VC-2-6 7+68 PAR-2205 Vn 0.75 370
7-VC-20, 8-VC-2-6 7+69 PAR-2212 Vn 0.95 1480
7-VC-20, 8-VC-2-6 7+69 PAR-2213 Vn 0.90 583
7-VC-20, 8-VC-2-6 7+70 PAR-2219 Vn 1.10 418


Bradford Cooke, Endeavour CEO commented, “With the success of our ongoing drilling and sampling exploration programs so far this year, management views the Parral Project as having good potential to develop another new high grade silver mine. The Parral Project is our largest exploration expenditure this year and represents an important part of our growth strategy.”


“We have re-conceptualized the development of the Parral Project as a potential two stage mine project due to the readily accessible high grade mineralized blocks we have delineated underground. Given there are several toll mills operating in the Parral district, and we have already applied for a mining permit requiring minimal new surface disturbance, we envisage a first stage, small scale, high grade toll mine averaging around 200-250 tonnes per day to generate cash flow while we evaluate the possibility of a second stage, larger scale, 1,000-2,000 tpd high grade mine that could become a new core asset.  We plan to mine a bulk sample and process it at a local toll mill in Q3, 2019 so that we can prepare a preliminary economic assessment for the stage one mine by year-end.”


Qualified Person


Godfrey Walton, M.Sc., P.Geo., Endeavour’s President and COO, is the Qualified Person who reviewed and approved this news release and supervised the drilling programs in Mexico. A Quality Control sampling program of reference standards, blanks and duplicates is used to monitor the integrity of all assay results. All samples are split at the local field office and shipped to ALS-Chemex Labs, where they are dried, crushed, split and 50 gram pulp samples are prepared for analysis. Gold is determined by fire assay with an atomic absorption (AA) finish and silver by aqua regia digestion and ICP finish, over-limits by fire assay and gravimetric finish.


About Endeavour Silver


Endeavour Silver Corp. is a mid-tier precious metals mining company that owns and operates four high-grade, underground, silver-gold mines in Mexico. Endeavour is currently advancing the Terronera mine project towards a development decision and exploring its portfolio of exploration and development projects in Mexico and Chile to facilitate its goal to become a premier senior silver producer.  Our philosophy of corporate social integrity creates value for all stakeholders.


Posted August 14, 2019

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