Yarramba. Final report at licence full surrender, for the period 27/8/2009 to 26/8/2014.
Published: 25 Nov 1914 Created: 12 Nov 2024 Revised: 12 Nov 2024

No field work was performed on EL 3904 Yarramba during the period August 2009 to August 2011. During Year 5 of EL 3904 ending on 26/8/2012, the following activities occurred: - Fugro Airborne Surveys were contracted by Uranium One to complete...

No field work was performed on EL 3904 Yarramba during the period August 2009 to August 2011. During Year 5 of EL 3904 ending on 26/8/2012, the following activities occurred: - Fugro Airborne Surveys were contracted by Uranium One to complete an airborne EM (TEMPEST) and magnetic survey in early October 2011, which covered the entire EL 3904 tenement area plus the northern portion of EL 3936, for a total of 1243 line km. The survey was designed to infill and complement data from the 2002 AEM survey flown for Southern Cross Resources and other regional AEM data from the Geoscience Australia 2010 Frome TEMPEST survey. The east -west flight line spacing varied depending on the availability of historical data - typically the spacing was 1 km, but it was narrowed to 500 m in places where re-flying of some earlier 2002 lines was undertaken, and to 250 m over the central portion of the Yarramba Palaeochannel. The new AEM data further defined the Yarramba Palaeochannel boundaries, whilst also identifying areas of high basement conductivity. The latter observations stirred fresh interest in base metal prospectivity within the Honeymoon Project area, prompting a subsequent review of historical data and a GIS desktop study which generated four targets based on geological, gravity, magnetic and AEM information, none of which had previously been tested. A PACE Initiative discovery drilling proposal was submitted to DMITRE seeking subsidy funds to assist with drilling these basement polymetallic targets [this application did not succeed]. - a total of 52 vertical open rotary mud drillholes for 5673 m were completed within EL 3904 as part of a regional sedimentary uranium drilling programme, while a further 26 holes were completed on the neighbouring EL 3936 South Eagle. The subject Yarramba drillholes were spread across several prospects including Callahan’s, Jason’s, Yarramba and East Kalkaroo Extension, the work being performed in two phases between December 2011 and May 2012 [Note: only lithology, wireline geophysical and composite well logs were submitted to DSD - no interpretation of the drilling results was provided in licence final report]. During Year 1 of renewed EL 5140, planning for the 2013 field season included doing more open hole rotary mud drilling at Yarramba, Yarramba South, Jason’s, East Kalkaroo Extension and Cummins Dam. Unfortunately, due to rapidly ensuing difficult economic conditions, the proposed field work was put on hold temporarily. Instead, an office-based comprehensive prospectivity analysis project was begun, covering the entire Honeymoon Project area (ELs 5140 and 5215, and parts of ML 6109 outside of the Honeymoon mine wellfield area). The aim here was to identify prospects that might have the best potential to provide a medium to longer-term supply of uranium, so that they could be prioritised and efficiently targeted during the next three years of exploration work. A database of uranium mineralisation intercept grade/thickness measurements was compiled for the study, using digital information compiled from 1204 modern and historical drillholes. 23 prospects were identified wherein at least one drillhole contained sedimentary uranium mineralisation exceeding 0.1% eU3O8. Once defined, each of these prospects was scrutinised against eleven critical parameters and assigned a ranking score. Encouragingly, 12 out of the 23 prospects scored a priority of high or better. It was decided that the prospectivity analysis had identified significant potential for expanding upon the current inventory of uranium reserves.

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About this record

Record No mesac26950
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Fugro Airborne Surveys;Borehole Wireline Pty Ltd
Sponsor Uranium One Australia Pty Ltd
Tenement
Tenement Holder Uranium One Australia Pty Ltd
Operator
Geological Province
Mine Name Yarramba uranium deposit;Honeymoon uranium deposit;East Kalkaroo uranium deposit;Brooks Dam Extension uranium prospect;Callahan's uranium prospect;East Kalkaroo Extension uranium prospect;Jason's uranium prospect;Yarramba Central uranium prospect
Stratigraphy
Commodity uranium
Notes
Geographic Locality: Yarramba Station;Mundaerno Hill;Honeymoon Well;Yarramba Palaeochannel;2001 Honeymoon Project Aerial EM Survey;2002 Frome Embayment Area 5 (part) Aerial EM Survey;2010 Frome Embayment Aerial EM Survey [part];2011 Lake Frome...

Geographic Locality: Yarramba Station;Mundaerno Hill;Honeymoon Well;Yarramba Palaeochannel;2001 Honeymoon Project Aerial EM Survey;2002 Frome Embayment Area 5 (part) Aerial EM Survey;2010 Frome Embayment Aerial EM Survey [part];2011 Lake Frome Aerial EM (TEMPEST) Survey [part];2011 Lake Frome Aerial Magnetic Survey [part] Doc No: Env 09893 Drillhole: BDE018;BDE019;BDE021 - BDE032;CAL001e;CAL003;CAL004;CAL006 - CAL010;CAL012;CAL013;CAL016 - CAL018;EKE001;EKE002;JAS001 - JAS006r;JAS007;JAS008;YAR001 - YAR014

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Language English
Metadata Standard ISO 19115-3

Citations

Use constraints License
License Creative Commons Attribution 4.0
Persistent identifier https://pid.sarig.sa.gov.au/document/mesac26950
Citation Cherry, J.L.;Dubieniecki, C. 1914. Yarramba. Final report at licence full surrender, for the period 27/8/2009 to 26/8/2014. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac26950

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[140.5,-32],[141,-32],[141,-31.5],[140.5,-31.5],[140.5,-32]]]}
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Lineage