Nov 18 2010
Goldrush Resources Ltd. (TSX VENTURE:GOD) President & CEO Len Brownlie, Ph.D has reported further assay results from the Phase 2 Reverse Circulation drilling and trenching program on the Company's Ronguen Gold Deposit in Burkina Faso, West Africa.
The highlight of the drilling results is RC hole KGRR010-099 which intersected 3.10 g/t of gold over 34 metres, centered at a vertical depth of 12 metres. Visible gold was observed from 11 to 16, 22 to 24, 25 to 30 and 32 to 34 metres down-hole. Gold grades in the mineralized interval ranged from 0.55 g/t to 6.32 g/t gold.
Hole KGRR010-099 is located on the eastern grid (G1) on section 970E, at the northern limit of the current grid. This hole was collared 22.5 metres grid north on the same section as hole KGRR010-096 that intersected 7.63 g/t gold over 15 metres at a depth of 12.7 metres, and 3.17 g/t gold over 22 metres at a depth of 31.1 metres (Goldrush news release #13-2010, October 25, 2010). Preliminary interpretation of the drilling results of section 970E indicates that near surface gold grades in this area of the Ronguen gold deposit appear to have been enhanced by supergene enrichment.
Assays results received from eight additional holes on the G1 grid returned the following significant composites:
- 1.51 g/t gold over 15 metres in hole KGRR010-095
- 1.63 g/t gold over 12 metres in hole KGRR010-093
- 1.17 g/t gold over 9 metres in hole KGRR010-094
The assay results from RC holes 90 to 95 and 97 have confirmed the presence of gold mineralization in areas with little prior drilling. For example, holes KGRR010-094 and KGRR010-095 on section 1140E have intersected a zone of gold mineralization that begins at surface and continues to a vertical depth of at least 60 metres, at which point it is still open down dip. This zone was previously identified in trench KGRT07-1143E but had not been confirmed by drilling.
Ronguen Deposit Mineralization
The Ronguen gold deposit is located within the northeastern part of the highly prospective Birimian age Boromo greenstone belt in Burkina Faso. The local geology at Ronguen is dominated by an ENE trending metasedimentary sequence consisting of interlayered siltstone, mudstone and minor conglomerates that are intruded by plugs, and narrow dykes and sills of gabbroic composition. The Ronguen mineralized zone is located in the structural footwall of a major ENE thrust fault which recorded a tectonic transport direction towards the north. The mineralized deformation corridor represents a major ENE trending high angle reverse fault zone, dipping moderately to steeply towards the south. Gold mineralization is found in both metasedimentary and mafic intrusive rock; there are no obvious lithological controls yet recognized at this epigenetic gold deposit. The gold mineralization is associated with quartz-carbonate veins/veinlets and with sulphides occuring as disseminations, veinlets and patches. Two sets of gold-bearing quartz veins are developed: subvertical shear veins parallel to the shear zone foliation and to the shear zone boundaries, and subhorizontal extension veins. Small quartz stockworks are present and represent a part of the gold mineralization.
Ongoing Exploration
Assay results from the final eight RC holes drilled on the western G2 grid have been received and will be announced following their interpretation. The Company is awaiting assay results from three trenches excavated on the northeastern border of the G1 grid. A 4,000 metre rotary air blast ("RAB") drilling program is currently underway to test new targets on the two permits that host the Ronguen deposit and will include holes to probe the area to the north of hole KGRR010-099 to delineate the limits of that interpreted area of supergene enrichment.
Trenching and ground geophysical programs will also be initiated shortly on the prospective Ouavousse and Salbo permits. Management has just returned from a very productive site visit to the Ronguen gold deposit and has approved a 5,000 metre RC drilling program on the permits that contain the Ronguen deposit. A contract has been signed for the program which will commence in mid-December or early January, depending on rig availability and will be operated on a two shift per day basis, thereby accelerating the program.
Quality Assurance/Quality Control
Goldrush maintains a rigorous quality control program involving the use of repeat assays, inserted blanks and the use of certified standards from an accredited Canadian laboratory. Details of Goldrush's quality control program were provided in the Company's News Release #2010-13, dated October 25, 2010.
The ALS Chemex laboratory in Ouagadougou, Burkina Faso was used for sample analysis. For its internal control, ALS Chemex inserted two certified standards, one blank and analyzed one random duplicate for approximately each 25 samples submitted. For its certified standard and blank samples included in the QA-QC procedure, Goldrush averaged 7.3% of the total samples submitted.
Mr. Driffield Cameron, P. Geo., Director of Goldrush, is the Qualified Person for this press release for the purposes of National Instrument 43-101 and has reviewed the technical information herein.
Source: Goldrush Resources Ltd.