2015 Press Releases
September 16, 2015
Nevsun Further Expands Harena Mineralization
Nevsun Resources Ltd. (TSX:NSU) (NYSE MKT:NSU) (Nevsun or the Company) is pleased to announce new assay results from the on-going 2015 Regional Exploration program at Bisha.
New drilling expands Harena by 250 m to the south and 100 m at depth
New massive sulphide intersections at Harena include:
HX-058: 1.31% Cu, 2.84% Zn, 0.35 g/t Au, 27 g/t Ag over 70.2m
including 3.58% Cu, 1.95% Zn, 0.69 g/t Au, 49 g/t Ag over 11.7m
HX-054B: 1.13% Cu, 2.48% Zn, 0.33 g/t Au, 24 g/t Ag over 67.0 m
including 2.66% Cu, 1.60% Zn, 0.69 g/t Au, 54 g/t Ag over 10.7 m
HX-052: 1.01% Cu, 4.33% Zn, 0.96 g/t Au, 32 g/t Ag over 57.3 m
including 3.44% Cu, 0.21% Zn, 7.49 g/t Au, 184 g/t Ag over 5.4 m
HX-053: 0.83% Cu, 4.08% Zn, 0.77 g/t Au, 30 g/t Ag over 28.8 m
Including 0.37% Cu, 9.56% Zn, 0.16 g/t Au, 13 g/t Ag over 11.0 m
and 2.11% Cu, 1.23% Zn, 0.79 g/t Au, 41 g/t Ag over 8.4 m
Harena still open with geophysical modeling suggesting further expansion potential possible
At Bisha, drilling at the southern end of the deposit demonstrates massive sulphides continue below the known deposit
Nevsun CEO Cliff Davis commented, "Our exploration programs at Bisha continue to produce excellent results. Drilling at Harena in particular, has been very encouraging. A mine plan optimization study for the Bisha operation is currently underway and the results from this new drilling will be included in this evaluation. We also look forward to returning later in the year to Aderat and Asheli on the Mogoraib Exploration License to further evaluate these recent discoveries."
Drilling at Harena, located 10 kilometres south of the Bisha processing plant, continues to expand the deposit along strike and at depth.
Holes HX-052, HX-054B and HX-058 further evaluated the Lower Zone high conductance borehole geophysical plate model associated with previously reported hole HX-050 (1.66% Cu, 6.62% Zn, 0.41 g/t Au, 28 g/t Ag over 67.2 metres). These holes demonstrate that the Lower Zone massive sulphide body remains thick down dip and down plunge and retains its classic high copper footwall zonation. It is still open to depth.
Holes HX-048, HX-049, HX-053 and HX-059 targeted the Upper Zone moderate conductance borehole geophysical plate model and continued to expand this zone down plunge to the south with the zone appearing to thicken. Hole HX-059 intersected a 33.0 metre wide zone grading 0.57% Cu, 4.30% Zn, 0.88 g/t Au, 61 g/t Ag. The zone remains open to the south and at depth with the geophysical modeling suggesting that mineralization likely continues for a significant distance in that direction.
Hole HX-057 was drilled into a gap between the geophysical plate models for the Upper Zone and Lower Zone. This hole intersected 14.4 metres of massive sulphide grading 0.33% Cu, 7.32% Zn, 0.20 g/t Au, 9 g/t Ag. The mineralization appears to be at a deeper level in the felsic volcanic host rock and is possibly a new separate zone. Borehole geophysical modeling suggests the mineralization intersected in HX-057 is located near the center of a relatively large conductive zone.
Part of the 2015 Regional Exploration program is exploration around the perimeter of the Bisha Main deposit both at depth and along strike.
Geophysical modeling of historic borehole responses from the Bisha deposit indicate that the southern half of the Bisha deposit likely continues down plunge below the known deposit for at least 200 metres. Four holes were drilled to test this concept, with the drilling being limited by mining activities in the pit. Three of the four holes intersected massive sulphides ranging from 10 metres to 25 metres in thickness. The massive sulphides are zoned with an upper base metal rich horizon and a lower low grade section. The best result was obtained in BX-010: 1.01% Cu, 3.21% Zn 0.61 g/t Au, 29 g/t Ag over 8.5 metres approximately 200 metres below the known deposit. The limited drilling has confirmed that Bisha continues to depth over an approximately 400 metre wide zone. Further drilling is required to determine the full extent and nature of this mineralization.
A Quality Assurance/Quality Control program was part of the assaying program at Bisha. 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. All samples were prepared and analyzed at Bisha's on-site laboratory independently operated by SGS.
Drilling intercept lengths only are reported in the tables and text below.
Mr. Robert Foy P.Geo., BMSC's Exploration Manager, has been overseeing the drilling at Bisha and is a Qualified Person as defined by NI 43-101. Mr. Foy has reviewed the technical content of this press release and approved its dissemination.
About Nevsun Resources Ltd.
Nevsun Resources Ltd. is a Vancouver-based mining company with an operating mine in Eritrea. Nevsun's 60%-owned Bisha Mine ranks as one of the highest grade open pit copper mines in the world. Nevsun has a strong balance sheet and future cash flows to grow shareholder value through exploration at Bisha and acquisition of additional mining assets.
Received on Wed Sep 16 2015 - 11:27:23 EDT