Assays from Great Northern Minerals Limited’s (ASX: GNM) diamond drilling programme at the Big Rush Gold Project in Northern Queensland have confirmed gold mineralisation to a vertical depth of at least 200 metres.
Managing Director, Cameron McLean, said the total recent diamond drilling at Big Rush comprised four HQ diamond holes for 1039.8 metres spread over approximately 200 metres of strike underneath the previously mined Central open pit.
The diamond holes under Big Rush confirm and lend strength to our geological modelling, that the mineralisation extends in depth,” Mr McLean said.
“At Big Rush we have already shown the strike over 2000m and all of this data is now being validated and compiled by CSA Global as we commence preliminary work on a JORC Resource for Big Rush.
“We have come a long way this year and the drilling programs completed have been comprehensive and the results are evidence that the company is on track.
“Extensional and infill drilling has commenced at Camel Creek which will evolve to the maiden JORC 2012 resource estimate for Camel Creek.”
Mr McLean said the individual detailed diamond results at Big Rush have highlighted an important laminated quartz vein which pinches and swells (boudinaged) and is the focus of the introduced gold at depth. The drilling has also allowed the commencement of a JORC 2012 resource estimate for Big Rush and final data compilation and validation has commenced for this work.
The initial diamond drilling programme at Big Rush was undertaken to test for extensions to the known mineralisation underneath the Central pit area. Holes were nominally spaced at 40-50 metres along strike and designed to intersect the interpreted gold zone at approximately 200 metres below natural surface.
All final assasy results have been returned and compiled.
The drilling was following up on the previously completed RC drill programme at Big Rush which totalled 22 RC drillholes for 3634 metres targeting underneath the Central, Southern and Northern pit areas. A number of high-grade gold results were returned including 1m @ 81.68 g/t Au, 3m @ 21.73 g/t Au.