Please use this identifier to cite or link to this item: https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/87559
Export to Endnote
Full metadata record
DC FieldValueLanguage
dc.contributor.authorOtto, Gen_US
dc.contributor.authorMathieson, Ten_US
dc.date.accessioned2018-07-31T02:21:24Z-
dc.date.issued2009en_US
dc.identifier.govdocCR2009-0751en_US
dc.identifier.urihttps://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/87559en_US
dc.description.abstractNabarlek Project is a uranium exploration project covering exploration licences (EL's) 10176 and 24371 for a total area of 383.8 km2 and located approximately 250 km east of Darwin. Cameco Australia Pty Ltd (Cameco) was granted the tenements on 1st September 2004. In early December 2006 a Joint Venture agreement was signed between Cameco and Uranium Equities Limited (UEL) to conduct exploration for uranium on the Nabarlek Project. EL 24372, which originally formed part of the project, was surrendered in September 2008. The exploration program for 2008 included drilling of 85 reverse circulation (RC) holes for 7,475 m, 532 aircore (AC) holes for 8,101 m, an airborne radiometric and magnetic survey by UTS at U40/42 for 321 line kilometres, a test VTEM survey by Fugro of 35.8 line kilometres on four lines, and downhole geophysical logging of selected holes from N147 and SMLB by Borehole Wireline and Geoscience Associates Australia. The RC drilling program at N147 was designed to test for extensions to the uranium mineralisation within Oenpelli Dolerite, first identified by QML in 1989. 19 RC holes for 2,737 m were drilled on the N147 prospect with the best uranium mineralisation intersection in 2008 being from NAR6318 with 28m at 0.145 % U3O8 from 112 to 140 m with a maximum grade of 0.63 % U3O8 from 120 to 121 m. Modelling of the dolerite hosted uranium mineralisation at N147 has interpreted four stacked en-echelon lenses trending east-southeast, dipping to the north and plunging to the west (Dorling 2009). The mineralisation occurs close to and is orientated sub-parallel to the intrusive contact of the Oenpelli Dolerite with the Mamadawerre Sandstone. Drilling appears to have closed off mineralisation to the east and west along strike of the mineralisation. The drilling conducted to date is sufficient to provide an outline of mineralisation, but is insufficient to provide an accurate resource calculation. Six RC drill holes for 804 m at SMLB were designed to follow up historical drilling of weak uranium mineralisation associated with the Boundary fault, a southeast trending reverse fault structure with 75 m offset, to the northwest of the Nabarlek Mine Lease. Best results were intersected in NAR6384 with 21 m at 510 ppm U3O8 from 94 to 115 m within chloritised schists of the Cahill Formation. The results of the drilling indicate weak mineralisation is associated with the footwall schists in the basement fault wedge. The prospect has not been upgraded and no further work in the vicinity is recommended. 48 RC holes for 2,798 m were drilled on a grid (400 m x 200 m grid) southeast of N147 and at 6 RC holes for 414 m at Coopers to the east of N147, through the sandstone unconformity and into basement rocks, to test for geochemical and alteration vectors that may indicate potential for uranium mineralisation. A southeast corridor on trend of the Nabarlek Shear is interpreted to represent the most prospective area for uranium mineralisation potential. The best result was intersected in NAR6345 of 134 ppm U3O8 from 48 to 52 m in chlorite schist, proximal to an interpreted fault in the magnetics. Regional RC drilling was conducted at MuddyWaters and Bus Stop testing Tempest conductive features. No results above expected background uranium values were returned. The nature of the conductive targets remains unexplained. Aircore drilling was concentrated in a corridor to the southeast and northwest of the Nabarlek Mine Lease, along key structures in areas not covered by sandstone; and in areas of anomalous Tempest conductive features to better target the RC drilling. The drilling was conducted to test for geochemical and alteration vectors within the regolith and transported cover that may indicate potential for uranium mineralisation. Aircore drilling in the Coopers area intersected significant uranium mineralisation within Oenpelli Dolerite with NAA6406 returning 0.12 % U3O8 and other holes in the area returning anomalous uranium. The proximity of the Tip fault and other structures in the area together with the widespread uranium anomalies in the aircore drilling indicates that the Coopers area is prospective for mineralisation, and further work is required.en_US
dc.subject.classificationUraniumen_US
dc.subject.classificationPhysiographyen_US
dc.subject.classificationRegional geologyen_US
dc.subject.classificationGeneral geologyen_US
dc.subject.classificationExploration historyen_US
dc.subject.classificationGeophysical surveysen_US
dc.subject.classificationAerial geophysical surveysen_US
dc.subject.classificationAerial EM surveysen_US
dc.subject.classificationAerial magnetic surveysen_US
dc.subject.classificationAerial radiometric surveyen_US
dc.subject.classificationDrillingen_US
dc.subject.classificationRC drillingen_US
dc.subject.classificationAircore drillingen_US
dc.subject.classificationDrill collarsen_US
dc.subject.classificationDrill hole logsen_US
dc.subject.classificationDrill hole dataen_US
dc.subject.classificationWire line logsen_US
dc.subject.classificationGamma gamma logsen_US
dc.titleEL 10176 and EL 24371 Nabarlek Project Annual report period 1 September 2008 to 31 August 2009en_US
dc.relation.isatmap100Oenpelli 5573en_US
dc.relation.isatmap250Alligator River SD5301en_US
dc.relation.isatgeolprovincePine Creek Orogenen_US
dc.relation.isatgeolprovinceMcArthur Basinen_US
dc.description.stratnameMamadawerre Sandstone, Oenpelli Dolerite, Cahill Formation, Zamu Dolerite, Nimbuwah Complex, Nabarlek Granite, Tin Camp Granite, Maningkorrirr Phonoliteen_US
dc.description.geochemicalsampling2254 Drill samplesen_US
dc.description.drilling85 RC holes for 7,475 m (NAR6306 to NAR6390)en_US
dc.description.drilling532 Aircore holes for 8,101 m (NAA6401 to NAA6628, NAA6630 to NAA6895, NAA6901 to NAA6938)en_US
dc.description.mineprospectnameBus Stopen_US
dc.description.mineprospectnameCoopersen_US
dc.description.mineprospectnameDelveren_US
dc.description.mineprospectnameGabo faulten_US
dc.description.mineprospectnameMuddy Watersen_US
dc.description.mineprospectnameN147en_US
dc.description.mineprospectnameN147 Southen_US
dc.description.mineprospectnameN84en_US
dc.description.mineprospectnameN84 Southen_US
dc.description.mineprospectnameNW Boundaryen_US
dc.description.mineprospectnameSMLBen_US
dc.description.mineprospectnameU40en_US
dc.description.mineprospectnameU42en_US
dc.identifier.tenureEL10176en_US
dc.identifier.tenureEL24371en_US
dc.description.modifyhistory02/11/2009en_US
dc.description.modifyhistory05/06/2013en_US
dc.description.modifyhistory11/11/2013en_US
dc.description.modifyhistory07/02/2014en_US
dc.description.modifyhistory17/11/2016en_US
dc.description.modifyhistory12/06/2018en_US
dc.contributor.holderCameco Australiaen_US
dc.identifier.collectionnameMinerals Exploration Reports (MEX)en_US
dc.identifier.govdocprefixCR2009en_US
local.flag.notified1
Appears in Collections:Minerals Exploration Reports (MEX)

Files in this Report:
File SizeFormat Add to
Download
GR062_2009_GA.pdf221.7 kBPDF Add
CR2009-0751_Appendices.zip87.96 MBZIP Add
CR2009-0751_Data.zip238.39 MBZIP Add
CR2009-0751_Figures.zip40.32 MBZIP Add
CR2009-0751_Tables.zip6.26 MBZIP Add


Items in GEMIS are protected by copyright unless otherwise indicated.

Get Adobe Reader