Nevsun Reports $75m of 1.7% Copper and 3.0% Zinc at Hambok

Eritrean Miner
Nevsun acquired the Mogoraib Exploration license from NGEx Resources that currently developing the Kerkebet deposit

By Nevsun,

Nevsun Resources Ltd. (TSX:NSU / NYSE MKT:NSU) announces previously unreported assay results from drilling completed by the previous owner of the Mogoraib River exploration license that includes the Hambok mineral deposit.

Nevsun reports that Bisha has started a resource definition drilling program at Hambok with expectation that the results will be included in a mineral resource estimate for Hambok that will be part of an overall resource and reserve estimate in Q1 2014 for the Bisha area deposits, effective December 31, 2013. A total of 2,713 metres in 8 holes were completed prior to the onset of the summer rainy season that has temporarily halted work until September. Assay results from these holes are pending. 

Highlights

  • Drilling confirms continuity of the massive sulphide body
  • Hambok mineral deposit still open to the south, north and at depth
  • Further mineral resource definition drilling underway
  • Updated Mineral Resource estimate anticipated in early 2014
  • High potential exploration targets in immediate mineral deposit area

Select high grade results include:

  • HAM-10-062: 79.1 m @ 1.56% Cu, 2.02% Zn from 189.1 – 268.2 m in massive sulphide
  • HAM-12-076: 47.9 m @ 1.48% Cu, 2.35% Zn from 213.8 – 261.7 m in massive sulphide
  • HAM-12-078: 75.4 M @ 1.70% Cu, 2.95% Zn from 192.5 – 267.9 m in massive sulphide
  • HAM-12-084: 47.0 m @ 1.50% Cu, 2.65% Zn from 141.6 – 188.5 m in massive sulphide

Assay results are from the thickest and best developed part of the Hambok deposit.

Hambok is a copper-zinc massive sulphide mineral deposit located 16 kilometers southwest of Nevsun’s Bisha Mine that represents potential additional feed for Bisha. Hambok is on the 97.4 square kilometer Mogoraib River exploration license acquired in October 2012.


The deposit consists of a single massive sulphide lens that is steeply east dipping and lenticular in shape. The massive sulphide lens extends for over 1,000 metres along strike and 350 metres on dip. The distribution of base metal values is regular within the sulphide body. The best grades generally occur nearer to surface along the top and outer edges in the central area of the body. The massive sulphide lens is open to the north and south and there is limited drilling at depth.

In 2009, the previous owner of the Hambok property completed 52 historical diamond drill holes totaling 11,984 metres on the deposit. Between 2010 and 2012 an additional 33 holes totaling 10,923 metres of in-fill diamond drilling and 42 holes totaling 2,675 metres of RC (reverse circulation) drilling targeting near surface gold potential was completed to further evaluate this mineral deposit. Much of the drilling completed in 2012 had not been assayed prior to the purchase of the Mogoraib River exploration license. Bisha has now finished this work and the results for all holes drilled between 2010 and 2012 are reported in this release.

Bisha believes that there is significant expansion potential at Hambok and in the immediate area. Compilation of a historical ground EM, IP (induced polarization) and soil geochemical data has highlighted possible extensions to the mineral deposit along strike and to the immediate west of the mineral deposit. In addition, encouraging mineralization (e.g. 29.0 metres (drilled length) grading 0.83 grams per tonne Au, 0.71% Cu, 3.36% Zn including 10 metres grading 1.23 grams per tonne Au, 1.10% Cu, 5.94% Zn in hole ANK-006) has been intersected in the Aderat area located approximately 5 kilometres along strike to the north of Hambok by the previous owner. A program of trenching has been initiated at this target with follow-up drilling planned for later in 2013.

TABLE 1: Hambok Drill Hole Data from holes drilled by previous owner, 2010 to 2012 (1) 

Hole ID From (m) To (m) Cu (%) Zn (%) Au (g/t) Ag (g/t) Length (m)
HAM-10-062 189.1 268.2 1.56 2.02 0.2 13.6 79.1
HAM-10-063 185.2 263.1 1.05 1.93 0.2 11.4 78.0
HAM-10-064 188.3 260 0.78 1.88 0.2 8.5 71.7
HAM-11-066 138.9 177.3 0.64 1.24 0.2 6.1 38.4
HAM-11-067 232.2 285.4 0.85 1.30 0.1 6.3 53.2
HAM-11-068 145.3 174.4 0.67 1.73 0.1 4.1 29.2
HAM-11-069 227.1 298.1 0.56 0.92 0.2 4.4 71.0
HAM-11-071 245.7 327.1 0.97 1.50 0.2 4.4 81.4
HAM-12-072 260.2 301.9 1.12 1.94 0.1 4.9 41.7
HAM-12-074 242.5 341.9 0.65 0.59 0.2 4.3 99.4
HAM-12-076 213.8 261.7 1.48 2.35 0.2 10.5 47.9
HAM-12-077 205.7 244.2 0.73 1.17 0.2 5.9 38.5
HAM-12-078 192.5 267.9 1.70 2.95 0.3 16.9 75.4
HAM-12-079 191.5 257 0.72 2.43 0.1 10.3 65.5
HAM-12-080 203.3 268.3 0.70 2.19 0.2 8.4 65.0
HAM-12-081 188.7 220 0.59 1.33 0.1 6.7 31.3
HAM-12-082 197.4 236.8 0.55 1.40 0.2 4.6 39.4
HAM-12-083 214.4 258.9 0.75 1.75 0.2 5.3 44.6
HAM-12-084 141.6 188.5 1.50 2.65 0.3 11.5 47.0
HAM-12-085 118.2 157.7 0.69 1.76 0.2 5.9 39.5
HAM-12-086 140.8 189.3 0.67 0.61 0.3 5.3 48.5
HAM-12-087 205.3 239.7 0.87 2.61 0.2 9.8 34.4
HAM-12-088 291.2 331.6 0.56 1.49 0.3 5.9 40.4
HAM-12-089 305.8 356.7 0.56 1.37 0.2 5.8 50.9
HAM-12-090 293.3 361.8 0.57 1.75 0.2 8.8 68.5
HAM-12-091 281.5 370.3 0.56 1.57 0.2 9.1 88.8
HAM-12-092 296.0 385.6 0.49 0.97 0.2 5.1 89.6
HAM-12-094 286.3 378.1 0.53 0.56 0.2 4.0 91.8
HAM-12-095 289.0 379.6 0.46 0.64 0.1 4.2 90.6
HAM-12-096 293.9 371.6 0.55 0.79 0.2 4.0 77.7

(1) Drill holes without significant mineralization have been excluded from the above table (holes 65, 70, 73, 75, 93).

A renewal for the Mogoraib River exploration license is pending as of the date of this news release.

TABLE 2: Location of drill holes for which results are being reported

Hole ID Easting (mUTM) Northing (mUTM) Elevation (mabmsl) Hole Depth Azimuth Dip
HAM-10-062 329143.3 1705039.6 628.6 280 285 -50
HAM-10-063 329119.5 1704947.8 628.3 280 285 -50
HAM-10-064 329166.9 1705093.0 627.8 277 285 -50
HAM-10-065 328833.1 1704498.9 632.1 137 285 -50
HAM-11-066 329176.2 1705319.3 627.9 189 285 -50
HAM-11-067 329260.2 1705291.1 626.7 295 278.5 -50
HAM-11-068 329154.1 1705225.9 628.3 190 280 -50
HAM-11-069 329236.2 1705197.2 626.8 313 280 -50
HAM-11-070 329355.0 1704980.0 614.0 550 285 -60
HAM-11-071 329198.3 1704980.4 620.0 340 285 -50
HAM-12-072 329163.6 1704886.9 617.0 328 285 -50
HAM-12-073 329395.0 1704913.0 612.0 529 285 -60
HAM-12-074 329227.0 1705116.0 614.0 352 285 -50
HAM-12-075 329323.0 1704853.0 618.0 514 285 -60
HAM-12-076 329110.0 1704904.0 618.0 280 285 -50
HAM-12-077 329095.0 1704853.0 620.0 277 285 -50
HAM-12-078 329143.0 1704998.0 619.0 283 285 -50
HAM-12-079 329177.0 1705131.0 613.0 265 285 -50
HAM-12-080 329197.0 1705164.0 619.0 283 285 -50
HAM-12-081 329201.0 1705216.0 620.0 238 285 -50
HAM-12-082 329217.0 1705260.0 618.0 253 285 -50
HAM-12-083 329231.0 1705316.0 617.0 274 285 -50
HAM-12-084 329093.0 1705014.0 619.0 208 285 -50
HAM-12-085 329109.0 1705176.0 620.0 172 285 -50
HAM-12-086 329057.8 1704921.1 618.0 214 285 -50
HAM-12-087 329233.0 1705361.1 624.0 255 285 -50
HAM-12-088 329318.7 1705335.7 622.0 351 285 -50
HAM-12-089 329327.4 1705285.9 621.0 375 285 -50
HAM-12-090 329308.9 1705235.0 622.0 377 285 -50
HAM-12-091 329289.1 1705190.2 615.0 376 285 -50
HAM-12-092 329276.4 1705098.9 619.0 398 285 -55
HAM-12-093 328795.0 1705324.0 621.0 300 105 -50
HAM-12-094 329286.7 1705139.0 613.0 391 285 -50
HAM-12-095 329262.1 1705069.2 617.0 394 285 -55
HAM-12-096 329255.0 1705012.8 617.0 385 285 -55

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Quality Assurance

A Quality Assurance/Quality Control program was part of the sampling program on the Hambok deposit. This program includes chain of custody protocols as well as systematic use of standards, duplicates and blank samples into the flow of samples produced by the sampling. Results from work by the previous owner are acceptable.

Samples were prepared at African Horn Testing Services (Eritrea) and analyzed at Genalysis Laboratories (a NATA registered laboratory) in Perth, Western Australia.

Drilling intercepts lengths only are reported in the tables and text above; it is estimated that true width will be approximately 85% of the mineralized intersections reported

Mr. Paul Gribble C.Eng., FIMMM, BMSC’s Chief Resource Geologist has been overseeing the drilling and resource work at Hambok 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.

The Hambok copper-zinc deposit represents potential feed for Bisha that could impact the size and timing of the primary phase investment in a zinc flotation plant
The Hambok copper-zinc deposit represents potential feed for Bisha that could impact the size and timing of the primary phase investment in a zinc flotation plant

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