Locality Map

Investment Highlights

AusIMM Presentation
20th June 2008
AusIMM presentation by Andrew Bisset, U3O8's Chief Geophysicist - "High Resolution Radiometric Surveying in the East Kimberley Region of Western Australia".
Boardroom Radio Broadcast - Tempest Survey highlights coincident EM & Uranium anomalies
20th May 2008
Listen to an audio broadcast with Stephen Mann, Managing Director in a presentation entitled "U3O8 Limited (UTO) - Tempest Survey Identifies Major Coincident Uranium Anomalies - Mr Stephen Mann, MD".
U3O8 Limited's Regional Ashburton Joint Venture with Cameco
3rd October 2007
The Directors of U3O8 Limited are pleased to announce the U3O8 - Cameco Regional Ashburton Uranium Joint Venture.

Mad Gap

(U3O8 Limited 100%)

  • Major airborne magnetic and radiometric survey in progress
  • Rock Chip sampling to 4.65% U3O8
The Mad Gap project comprises 3 granted tenements located approximately 100 kilometres north-west of Halls Creek in the Kimberley region of Western Australia.  U3O8 holds 100% interest in these tenement applications, with a private group retaining rights to diamond deposits on one tenement. Rock chip sampling on the Mad Gap tenements in the 1970s returned assays including 4.65% U3O8, 4.42% U3O8 and 1.69% U3O8 from pits on outcropping secondary uranium mineralisation located along joints and cracks and within porous, highly weathered sandstones. Uranium mineralisation is exposed for over 20 kilometres around the Mad Gap Anticline, hosted by the Brown Sandstone unit of the O'Donnell Formation, the basal member of a Palaeoproterozoic sediment sequence unconformably overlying older rocks of the Halls Creek Orogen.

Widely spaced shallow drilling (average 60 metres depth) beneath the outcropping uranium mineralisation returned consistently anomalous radioactivity associated with the Brown Sandstone unit.  Of 23 shallow holes testing the 20 kilometres of strike at Mad Gap, 8 holes returned assays in excess of 0.05% U3O8, and two holes reported intersections of 0.2% U3O8 or greater over narrow intervals, with better intersections including 1m @ 0.208% U3O8.

Visible secondary uranium is exposed at several prospects and is clearly stratabound along a sandstone/siltstone contact within the O'Donnell Formation, immediately above the unconformity.

The Mad Gap project area forms part of the strategic tenement package acquired by U3O8 Limited in the Kimberley region of Western Australia. It abuts the U3O8 Limited - Northern Star Resources, East Kimberley Joint Venture immediately to its northeast and together covers some of the most prospective ground for unconformity style uranium mineralisation in Australia.

U3O8 Limited is currently flying a 34,000 line kilometres detailed magnetic - radiometric survey over the combined area of Mad Gap and the East Kimberley Joint Venture. Upon the completion of the survey and analysis of the results, follow-up programmes, including drilling, can be planned.

Mad Gap Project - Regional Geology and prospectsMad Gap Project