http://www.miningreview.com/nevsun-resources-discovers-new-sulphide-deposit-at-bisha/
Nevsun Resources discovers new sulphide deposit at Bisha
Posted by: Chantelle Kotze
June 19, 2015
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Eritrea – Dual-listed Nevsun Resources has discovered a greenfield
volcanogenic massive sulphide discovery at the grassroots Asheli
prospect on the Mogoraib River exploration license, located 20 km
southwest of the Bisha processing plant.
The Asheli drilling forms part of the 2015 Bisha regional exploration
program which builds on the highly successful 2014 program. The
regional exploration program is currently focused on three main areas:
expansion of the Harena deposit at depth and along strike; exploring
the perimeter of the Bisha deposit at depth and along strike; and,
evaluating regional targets on the Mogoraib River license at Asheli,
Aderat and Tekewuda.
Asheli Prospect
The Asheli area was targeted for the initial drill testing of the over
5 km long Asheli Trend which is characterised by an extensive highly
siliceous felsic fragmental unit that has numerous geophysical
anomalies associated with it.
Having previously been tested, Bisha Mining Share Company re-evaluated
the area by field mapping and completing a lithogeochemical analysis
of the volcanic rocks. This work defined a 700 meter long zone of
highly sericite and chlorite altered felsic volcanic stratigraphy
associated with gossan zones enhancing the probability that a VMS
deposit was likely to be found in the area.
High grade massive sulphide intersections include:
MX-052: 2.29% copper, 4.50% zinc, 0.45 g/t gold, 37 g/t silver over 22.9 m
Including 3.67% copper, 8.04% zinc, 0.68 g/t gold, 50 g/t silver over 7.4 m
and 7.92% copper, 3.89% zinc, 1.14 g/t gold, 101 g/t silver over 2.9 m
MX-056: 1.26% copper, 6.08% zinc, 0.28 g/t gold, 26 g/t silver over 20.9 m
including 1.71% copper, 8.51% zinc, 0.37 g/t gold, 35 g/t silver over 10.9 m
The Asheli discovery highlights the prospectivity of the Asheli Trend.
With only 1 km of the trend drill tested during this first phase of
exploration and an additional 4 km that has never been drill tested
and having similar geology, the likelihood of further discoveries is
high. Rainy season begins in mid-June and will require further work to
be paused until later in the year.
“We continue to have excellent results from our exploration programs
at Bisha. The assay results demonstrate that the Bisha District hosts
numerous deposits like other classic volcanogenic massive sulphide
(VMS) camps worldwide.
“Our new greenfield discovery at Asheli is exciting in that it shows
that the mineralising systems on the Asheli trend are capable of
producing high grade deposits with good thicknesses of massive
sulphide. With over 4 km of untested strike length with similar
geology the potential for further discoveries on this trend looks very
promising”, says Nevsun CEO Cliff Davis.
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Received on Sat Jun 20 2015 - 10:00:02 EDT