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Press release from PR Newswire

Nevsun Announces Further Drilling Results from Northwest Zone

Monday, October 21, 2013

Nevsun Announces Further Drilling Results from Northwest Zone

07:50 EDT Monday, October 21, 2013

VANCOUVER, Oct. 21, 2013 /PRNewswire/ - Nevsun Resources Ltd. (TSX:NSU) (NYSE:NSU) is pleased to announce further diamond drill results from resource definition drilling at the Northwest Zone poly-metallic massive sulphide deposit, located 2 kilometers from the Bisha processing plant within the Bisha mining license.

HIGHLIGHTS

  • Northwest Zone still open to south and north
  • Four down dip step-out holes demonstrate that the mineralized system continues at depth
  • Additional parallel zone identified but limited drilling to date
  • Maiden mineral resource estimate in early 2014

Selected New High Grade Results Include:

  • Hole NWDD129 - 14.1 m* @ 1.06 % Cu and 3.89% Zn from 111.9 m to 126.0 m (MS)*
  • Hole NWDD130 - 14.0 m @ 17.2 g/t Au and 49.0 g/t Ag from 101.0 m to 115.0 m (S)
  • Hole NWDD131 - 18.5 m @ 2.11 % Cu and 13.5 g/t Ag from 93.5 m to 112.0 m (M-S)
  • Hole NWDD160 - 3.7 m @ 2.21% Cu and 3.3 g/t Au and 12.1 g/t Ag from 216.0 m to 219.7 m (M-S)
  • Hole NWDD173 - 20.5 m @ 1.40 % Cu and 17.3 g/t Ag from 77.5 m to 98.0 m (M-S)
  • Hole NWDD185 - 5.2 m @ 5.2 g/t Au and 13.9 g/t Ag from 52.5 m to 57.7 m (O)
  • Hole NWDD187 - 14.2 m @ 1.21 % Cu and 2.06 % Zn from 110.6 m to 124.8 m (M-S)
  • Hole NWDD189 - 14.5 m @ 3.2 g/t Au from 39.0 m to 53.5 m (O)
  • Hole NWDD195 - 5.2 m @ 0.60 % Cu and 3.64 % Zn and 27.5 g/t Au and 174.6 g/t Ag (M-S) from 105.8 m  to 111.0 m (M-S)

*Notes: Mineralization Types:  M = Massive Sulphide; M-S = Massive and Stringer Sulphide; S = Stringer Sulphides; O = Oxidized Material; D = Dyke. Intervals given are drilled metres. True widths are generally 70 to 90% of drilled length depending on hole and mineralisation orientation.

Selected holes are shown in the deposit map below.

Bisha Mining Share Company (BMSC) completed the resource definition and expansion drilling program totaling 216 holes at the Northwest Zone in May 2013 and drilled a further 4 holes in July and August 2013.  A total of 18,892 meters of drilling has been completed at the Northwest Zone in 2013.  Assay results received to-date from holes NWDD118 - NWDD198 that were completed in 2013 are included at the end of the release. Prior drilling results were released on May 23, 2013. Remaining results will be released later in 2013.

Work on the maiden resource estimate is in progress and the results are expected to be included in a BMSC mineral resource and reserve update in early 2014.  The estimate will include Bisha Main and Harena resource and reserve updates and Hambok and the Northwest Zone maiden resources.

Map: Northwest Drilling Results

Mineralization at the Northwest Zone occurs in a series of massive sulphide lenses hosted within altered felsic volcanic rocks containing abundant copper and zinc-rich stringer sulphide mineralization.  Gold and silver are occasional highly enriched in these stringer zones and are often associated with later dykes.  Some of the massive sulphides have been exposed to weathering at surface creating oxide zones that are locally enriched in gold.  Beneath these areas, some supergene copper mineralization may also be present.  Core recovery is often poor in the oxide zones as unconsolidated material is easily washed away and not recovered during the diamond drilling process.  Further testing of these areas by reverse circulation drilling will be completed in due course.

The mineralized system at the Northwest Zone is extensive and resource expansion opportunities remain to the north, south and at depth.  In July, four holes were drilled beneath the central and northern portions of the deposit.  This drilling demonstrated that the mineralized system continues to depth and appears to be thickening to the south.  Assays are still outstanding, but further drilling to the south is warranted.  In addition, to the east there is a parallel zone of massive sulphide that is only defined by limited drilling.

The Northwest Zone was discovered in 2003 by the diamond drilling of an airborne EM anomaly and follow-up ground geophysics, soil sampling and drilling from 2004 to 2006 defined a 600 meter long zone of massive and stringer sulphide mineralization. Further work was deferred while the Bisha deposit was being prepared for mining.  A program of in-fill drilling was started in late 2011 designed to fully delineate the open-pit potential.  This drill program has now been completed and has successfully extended the mineralization an additional 400 meters in strike length.

Quality Assurance

A Quality Assurance/Quality Control program was part of the sampling program for the Northwest Zone work. This program includes a chain of custody whereby drill core samples are initially crushed and subsampled at the Bisha Mine preparation facilities before being transported to Asmara, sealed, and sent on to the laboratories of ALS Limited in Vancouver. ALS is accredited by the Standards Council of Canada. Multi-element analysis is completed using ICP-AES methods; gold is analyzed by fire assay with AAS finish. Certified reference material (standards), duplicates and blank samples are systematically inserted into the flow of core samples and results analyzed on a batch by batch basis.

Hole collars are surveyed using differential GPS; down hole survey was originally completed using the Reflex EZ shot method, now superseded with downhole gyro methods.

Mr. Paul Gribble C.Eng., FIMMM, BMSC's Chief Resource Geologist has been overseeing the drilling and resource work at the Northwest Zone and is a Qualified Person as defined by NI 43-101.  Mr. Gribble has reviewed the technical content of this press release and approved its dissemination.

Forward Looking Statements

The above contains forward-looking statements or forward-looking information within the meaning of the United States Private Securities Litigation Reform Act of 1995, and applicable Canadian securities laws. Forward-looking statements are frequently, but not always, identified by words such as "expects," "anticipates," "believes," "intends," "estimated," "potential," "possible" and similar expressions, or statements that events, conditions or results "will," "may," "could" or "should" occur or be achieved.  Forward-looking statements are statements concerning the Company's current beliefs, plans and expectations about the future and are inherently uncertain. The actual achievements of the Company or other future events or conditions may differ materially from those reflected in the forward-looking statements due to a variety of risks, uncertainties and other factors, including, without limitation, the risks that: (i) any of the assumptions in the historical resource estimates turn out to be incorrect, incomplete, or flawed in any respect; (ii) the methodologies and models used to prepare the resource and reserve estimates either underestimate or overestimate the resources or reserves due to hidden or unknown conditions, (iii) exploration activities or the mine operations are disrupted or suspended due to acts of god, internal conflicts in the country of Eritrea, unforeseen government actions or other events; (iv) the Company experiences the loss of key personnel; (v) the Company's operations or exploration activities are adversely affected by other political or military, or terrorist activities; (vi) the Company becomes involved in any material disputes with any of its key business partners, lenders, suppliers or customers; (vii) the Company is subjected to any hostile takeover or other unsolicited attempts to acquire control of the Company; or (viii) are associated with the speculative nature of exploration activities, periodic interruptions to exploration, failure of drilling, the uncertainty and difficulty with core recovery in oxide zones, processing and mining equipment, the interpretation of drill results and the estimation of mineral resources and reserves, changes to exploration and project plans and parameters and other risks are more fully described in the Company's Management Discussion and Analysis for the fiscal year ended December 31, 2012, which is incorporated herein by reference.  The Company's forward-looking statements are based on the beliefs, expectations and opinions of management on the date the statements are made and the Company assumes no obligation to update such forward-looking statements in the future, except as required by law.  For the reasons set forth above, investors should not place undue reliance on the Company's forward-looking statements.

Please see the Company's Annual Information Form for the fiscal year ended December 31, 2012, and the Company's Management Discussion and Analysis for the year ended December 31, 2012, for a more complete discussion of the risk factors associated with our business.

About Nevsun Resources Ltd.

Nevsun Resources Ltd. is a Vancouver-based mining company.  Nevsun's 60%-owned Bisha Mine commenced commercial production in February 2011 and ranks as one of the highest grade open pit copper mines in the world.  Nevsun has a strong balance sheet to grow shareholder value through exploration at Bisha and acquisition of additional mining assets.

NEVSUN RESOURCES LTD.

"Cliff T. Davis"

Cliff T. Davis President & Chief Executive Officer

Northwest Zone Intersections -May 12 to October 11, 2013

Hole Id From (m) To (m) Length (m) Cu (%) Zn (%) Au (g/t) Ag (g/t) Mineralization Type
NWDD118 93.0 97.0 4.0 1.03 0.02 0.6 11.8 S
and 121.3 132.8 11.5 1.29 0.66 0.3 10.9 M-S
NWDD119 73.0 80.7 7.70 0.54 0.03 0.2 76.6 M
NWDD129 111.9 126.0 14.1 1.06 3.89 0.3 14.4 M
and 137.0 141.0 4.0 0.50 0.24 0.1 5.8 M
and 152.0 160.0 8.0 0.56 0.10 2.0 10.6 M-S
and 169.0 216.0 47.0 0.82 0.13 0.5 8.4 M-S
NWDD130 76.0 91.0 15.0 1.29 0.00 0.1 8.9 M
and 101.0 115.0 14.0 0.36 0.01 17.2 49.0 S
NWDD131 93.5 112.0 18.5 2.11 0.04 0.3 13.5 M-S
NWDD132 76.0 125.0 49.0 0.71 0.05 0.1 7.5 M-S
NWDD134 72.0 84.9 12.9 0.77 0.01 0.3 7.6 M-S
NWDD135 68.0 74.0 6.0 1.51 0.00 0.1 13.3 M
and 108.0 125.6 17.6 1.45 0.06 0.1 11.8 M
NWDD136 78.7 93.8 15.1 1.02 0.01 0.1 4.9 M
and 102.0 109.2 7.2 0.86 0.15 0.1 7.6 M
and 126.0 135.3 9.3 0.83 0.11 0.1 6.5 M
and 151.0 167.0 16.0 0.58 0.14 0.1 4.6 M
and 192.0 196.0 4.0 0.00 0.02 9.3 22.0 S
NWDD137 50.00 54.0 4.0 0.02 1.76 0.0 9.9 O
NWDD138 31.50 34.3 2.8 0.25 1.46 0.3 15.0 M-S
NWDD139 NSV              
NWDD140 NSV              
NWDD141 NSV              
NWDD142 56.0 59.4 3.4 1.5 0.01 0.0 0.5 O
and 81.0 85.0 4.0 0.12 4.58 0.1 8.8 S
and 141.0 181.0 40.0 0.96 0.30 0.1 8.5 M-S
NWDD143 81.0 85.3 4.3 0.77 0.01 0.1 4.6 M
and 102.0 107.0 5.0 1.46 0.12 0.1 12.2 M
and 152.0 157.6 5.6 0.9 0.15 0.1 6.9 M
NWDD154 57.0 62.0 5.0 1.00 0.13 0.0 2.6 O
and 178.7 261.0 82.3 1.15 0.64 0.9 10.8 M-S 
NWDD157 NSV              
NWDD159 145.9 154.0 8.1 0.19 2.58 0.2 19.7 S
and 216.0 236.0 20.0 0.73 0.06 0.7 5.9 S-D
NWDD160 216.0 219.7 3.7 2.21 0.22 3.3 12.1 M-S
NWDD161 143.0 147.2 4.2 0.38 1.53 0.2 10.1 M-S
and 193.0 216.8 23.8 1.46 0.08 0.3 6.0 M-S
NWDD162 266.0 268.0 2.0 0.01 0.01 4.8 15.2 D
NWDD163 148.8 160.0 11.2 0.82 6.47 0.2 21.7 M
and 214.5 220.0 5.5 0.62 0.01 0.2 2.9 S
NWDD164 60.0 85.5 25.5 1.07 0.01 0.1 6.3 M
and 93.0 106.3 13.3 0.97 0.02 2.2 12.0 D
NWDD165 84.0 90.0 6.0 1.01 0.02 0.2 8.3 M-S
and 110.0 158.0 48.0 0.70 0.32 0.1 7.5 M
NWDD166 28.5 31.0 2.5 0.01 0.01 6.0 2.4 O
and 40.0 41.5 1.5 0.00 0.00 4.4 19.0 O
NWDD170 40.7 44.8 4.2 0.01 0.03 1.7 270 O
including 43.5 44.8 1.3 0.00 0.06 0.6 837 O
NWDD172 55.5 58.0 2.5 0.00 0.02 1.2 166.4 O
including 55.5 56.0 0.50 0.01 0.04 2.7 440 O
NWDD173 77.5 98.0 20.5 1.40 0.03 0.8 17.3 M-S
NWDD174 98.0 102.0 4.0 0.58 0.01 0.1 2.0 M-S
NWDD175 48.0 55.7 7.70 0.01 0.03 1.6 15.9 O
NWDD176 82.4 88.9 6.50 0.42 0.15 0.5 19.5 M-S
NWDD177 82.0 118.0 36.0 1.05 0.04 0.2 9.4 M-S
NWDD178 78.0 108.4 30.4 1.13 1.83 0.2 26.7 M
including 78.0 79.5 1.50 5.59 0.19 0.1 13.0 M
NWDD179 115.5 133.5 18.0 1.05 1.35 0.2 12.5 M
and 134.3 147.0 12.7 1.00 1.55 0.2 9.5 M
NWDD180 NSV              
NWDD181 130.3 160.0 29.7 1.02 0.94 0.2 8.7 M-S
NWDD182 NSV              
NWDD183 NSV             S
NWDD184 148.2 153.3 5.1 0.92 0.34 1.0 9.3 M-S
NWDD185 52.5 57.70 5.2 0.00 0.01 5.2 13.9 O
NWDD186 177.0 198.0 21.0 0.66 1.56 0.2 6.1 M-S
including 183.0 185.0 2.00 0.50 7.23 0.2 16.0 M-S
and including 189.0 192.2 3.2 0.72 3.58 0.3 8.4 M-S
NWDD187 110.6 124.8 14.2 1.21 2.06 0.4 11.5 M-S
including 112.0 118.0 6.0 1.16 3.88 0.2 10.0 M-S
and including 120.0 124.8 4.8 1.54 0.79 1.0 16.4 M-S
NWDD188A 196.0 217.0 21.0 0.44 2.48 0.2 4.2 M-S
NWDD189 39.0 53.5 14.5 0.00 0.01 3.2 7.0 O
including 39.0 40.5 1.50 0.00 0.00 7.2 7.0 O
including 46.5 49.7 3.20 0.01 0.03 10.9 8.0 O
NWDD190 42.0 46.5 4.5 0.00 0.02 3.6 15.5 O
NWDD191 161.0 172.0 11.0 0.08 0.16 3.3 8.1
and 183.0 187.0 18.0 0.91 1.22 0.3 7.5 M
NWDD193 163.6 172.0 8.4 0.80 2.73 0.3 11.1 M-S
NWDD194 204.1 213.0 8.90 0.48 3.26 0.0 9.3 M-S
NWDD195 105.8 111.0 5.2 0.60 3.64 27.5 174.6 M-S
including 107.5 109.0 1.5 0.50 1.74 34.9 208.3 M-S
and 109.0 110.0 1.0 0.21 4.49 95.8 558.0 D
NWDD196 81.0 85.0 4.0 0.05 2.12 0.1 6.8 S
NWDD197 247.0 254.5 7.5 0.02 0.04 11.6 17.7 D
NWDD198 NSV              
NWGT005 118.0 133.0 15.0 0.01 3.06 0.9 39.8 M
NWGT008 52.2 55.1 2.90 0.32 1.66 0.1 15.4 M-S

Mineralization Types:  M = Massive Sulphide; M-S = Massive and Stringer Sulphide; S = Stringer Sulphides O = Oxidized Material; D = Dyke Assay results for holes NWDD122-124 and NWDD126-128 were previously reported on May 23, 2013 Assay results are still awaited for holes NWDD125, NWDD133, NWDD144-153, NWDD155-156, NWDD158, NWDD167-169, NWDD171, 192 Holes prefixed NWGT are results encountered in geotechnical holes drilled for pit stability considerations.

Northwest Zone Drill Collars 2013

Hole ID Final Depth Azimuth Dip UTM_East UTM_North Elevation
NWDD118 237.0 135 -50 338768.466 1717913.493 554.861
NWDD119 111.0 135 -50 338553.038 1717670.663 554.790
NWDD129 306.0 135 -50 338666.139 1717911.602 554.018
NWDD130 202.5 135 -50 338595.152 1717735.030 554.259
NWDD131 205.5 135 -50 338630.379 1717770.385 553.991
NWDD132 217.5 135 -50 338701.016 1717841.384 554.526
NWDD134 158.0 135 -50 338725.783 1717816.349 554.840
NWDD135 164.0 135 -50 338637.947 1717798.227 553.523
NWDD136 280.5 135 -50 338644.942 1717862.094 553.851
NWDD137 134.0 135 -50 338554.936 1717527.642 555.507
NWDD138 80.0 135 -50 338591.003 1717491.66 555.744
NWDD139 152.0 135 -50 338968.505 1717821.387 559.279
NWDD140 239.0 135 -50 338916.055 1718091.406 556.346
NWDD141 152.0 135 -50 338967.656 1718034.317 556.735
NWDD142 233.1 135 -50 338609.436 1717862.169 553.431
NWDD143 202.5 135 -50 338634.038 1717837.505 553.595
NWDD154 328.0 135 -50 338630.087 1717946.923 553.371
NWDD157 115.0 135 -50 338747.348 1717759.595 555.210
NWDD159 274.0 135 -50 338559.514 1717876.674 552.846
NWDD160 319.0 135 -50 338634.561 1717978.326 553.208
NWDD161 265.5 135 -50 338549.378 1717851.563 552.840
NWDD162 352.5 135 -52.5 338445.983 1717778.085 553.033
NWDD163 304.0 135 -50 338662.444 1717950.72 553.618
NWDD164 157.5 135 -50 338570.568 1717688.801 554.469
NWDD165 178.0 130 -50 338700.300 1717872.755 554.528
NWDD166 85.5 135 -50 338602.361 1717657.058 554.721
NWDD170 85.5 135 -50 338618.067 1717676.512 554.758
NWDD172 75.0 135 -50 338570.358 1717653.719 555.030
NWDD173 117.0 135 -50 338768.493 1717874.114 555.328
NWDD174 106.5 135 -50 338538.326 1717685.918 554.951
NWDD175 82.5 135 -50 338818.164 1717865.374 555.957
NWDD176 157.5 135 -44 338496.742 1717763.079 553.560
NWDD177 133.0 135 -50 338786.201 1717897.539 555.511
NWDD178 115.5 315 -50 338508.536 1717572.762 555.363
NWDD179 169.5 135 -50 338742.376 1717908.753 554.946
NWDD180 126.0 315 -50 338435.322 1717435.401 554.385
NWDD181 169.5 135 -50 338758.242 1717926.070 555.013
NWDD182 190.5 135 -48 338508.883 1717650.831 555.735
NWDD183 190.5 135 -45 338479.183 1717649.579 555.274
NWDD184 175.5 135 -50 338772.176 1717946.54 554.573
NWDD185 106.5 135 -50 338846.958 1717872.747 556.201
NWDD186 226.5 135 -50 338747.515 1717971.306 554.481
NWDD187 188.0 135 -50 338823.104 1717937.679 557.228
NWDD188 76.5 135 -50 338772.203 1718017.784 554.553
NWDD188A 250.5 135 -50 338773.965 1718015.863 554.707
NWDD189 100.5 135 -50 338870.523 1717884.155 556.629
NWDD190 112.5 135 -50 338877.698 1717912.004 556.965
NWDD191 286.5 135 -50 338761.460 1717992.849 554.695
NWDD193 205.5 135 -50 338842.319 1718018.193 555.662
NWDD194 262.5 135 -48 338812.577 1718046.563 555.015
NWDD195 143.0 135 -50 338916.480 1718014.815 556.944
NWDD196 259.5 135 -49 338840.238 1718084.804 555.176
NWDD197 319.5 135 -50 338774.992 1718085.925 554.557
NWDD198 211.5 135 -50 338881.008 1718050.166 556.151

 

SOURCE Nevsun Resources Ltd.

PDF available at: http://stream1.newswire.ca/media/2013/10/21/20131021_C5464_DOC_EN_32266.pdf

For further information: <p> <b>Contact:</b><br/> Kin Communications<br/> Tel: 604 684 6730<br/> Toll free: 1 866 684 6730<br/> Email: <a href="mailto:nsu@kincommunications.com">nsu@kincommunications.com </a> </p> <p> Website: <a href="http://www.nevsun.com/">www.nevsun.com</a> </p>

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