New OPEN FILE reports and data available from recent co-funded projects

Round 16 guidelines
16 Apr 2025

The most recent Geophysics and Collaborations program projects from round 17 to become OPEN FILE include:

  • DevEx Resources Ltd undertook the Murphy West Magnetic and Radiometric Survey, improving on the pre-existing 400m spaced NTGS magnetic/radiometric data by adding 35,575-line kms at 100m spacing, 40m survey height, in the Murphy Province. The radiometric and magnetic airborne survey has identified multiple large (up to 2km in length), uranium anomalies along the southern margin of the McArthur Basin in the Northern Territory, west of the Westmoreland uranium deposits located in the neighbouring state of Queensland. Products provided: DTM, magnetics and radiometrics as SHP, GRD and TIFFs. Download through GEMIS: CR2024-0611: Round 17 - Geophysics and Drilling Collaborations program Final Report Murphy West Magnetic and Radiometric Survey
  • Alligator Energy Ltd undertook the Nabarlek North Magnetic and Radiometric Survey covering 1,100km2 at100 metre line spacing and 50m height, with two infill blocks were flown at 50m spacing in the Alligator Rivers region of the Pine Creek Orogen. SGC were contracted to complete a structural interpretation and targeting exercise with a total of 44 targets identified to focus future exploration work programs for uranium mineralisation. Products provided: Includes DTM, magnetics and radiometrics as SHP, GRD and TIFFs, SGC structural interpretation and targeting (Geotiffs, ECWs, Mapinfo workspace and QGIS project). Download through GEMIS: CR2024-0677: ELs 31480, 28389, 28390, 29991, 29992, 29993 Nabarlek North Project Regional-scale geophysical acquisition
  • Alligator Energy Ltd also drilled the Nabarlek North RC program. The northern drill holes intersected predominantly Archean gneiss and granite with radiometric and magnetic anomalies providing unexceptional CPS and uranium values. Three drillholes were completed in the southern area at the Bully target (identified from co-funded magnetics), intersecting low level uranium anomalism with a peak of 108ppm U3O8 at 83-84m depth. Future work will be to improve the geological interpretation for targeted drilling into the Lower Cahill Formation. 2024 drilling remains within the Cahill formation but not reaching the “more structurally ductile and potentially altered” Lower Cahill Formation. Further work is also planned to investigate other new targets identified from the co-funded magnetics program.  11 x 150m RC holes for 1,650m (NNRC24-010, NNRC24-011, NNRC24-012, NNRC24-013, NNRC24-014, NNRC24-015, NNRC24-016, NNRC24-017, NNRC24-018, NNRC24-019, NNRC24-020).  A selection of chip samples and trays are available at the Darwin Core Facility. Products provided: Drill data – Sampling frequency varies from every 12.5m to every 1m for zones of interest – assays include Pb & U isotopes, 58 suite multi-element 4A/ICP-MS, lithium borate fusion, loss on ignition, Fire assay by ICP-AES. Geophysics includes: scintillometer readings of RC chips in the bags, EZGAMMA-GAM-055 downhole gamma readings. Download through GEMIS: CR2024-0709: ELs 31480 and 29993 Nabarlek North Project RC Drilling
  • Northern Star Resources Ltd conducted the Gamma East Gravity Survey survey in the Tanami region comprising 1,127 line kms at 400m line spacing and minimum drape height of 80m. The high-resolution airborne gravity data supports magnetic and stratigraphic interpretations evident from 1:250,000 interpreted geological map sheets and can provide better understanding of the complexity of some of the structures and geological units evident in the area. Major and minor faults can be mapped with better confidence. Fold architecture, particularly near the Flores Shear Zone, is better resolved enabling targeting of structural geological settings considered favourable for gold mineralisation such as the Killi Killi, Mount Charles, and Dead Bullock formations. Products provided: DTM, TMI and Gravity imagery grd, TIFF, SHP, Geosoft GDB database files, ERS files. Download through GEMIS: CR2024-0710: Gamma East Geophysics Final Report Round 17 Geophysics and Drilling Collaborations 2024 

  • Core Lithium Ltd, under the new Advancing Critical Minerals category, re-analysed 2160 soil samples from the Barrow Creek area, Aileron Province, for a suite of REE was completed with anomalous results up to 652ppm TREO and at least three separate locations identified that require field investigation follow up. Although the existence of NYF-type pegmatites or other alkaline intrusion-related systems cannot yet be ruled out, the datasets do not appear to indicate an association with elements often found in such systems. The anomalous REE results may be related to a regional zonation pattern in which REE are slightly enriched in pegmatites closer to the source granite, possibly near the roof zone. Pegmatites in the region have more affinities with LCT pegmatites and remain prospective for Li mineralisation. Products provided: 2,160 soil pulps analysed using ME-MS81 Lithium Borate Fusion ICP-MS. Download through GEMIS: CR2024-0771: Schedule 5 Final Report: Geophysics and Drilling Collaborations Program 2024, Round 17 EL31058  

  • Barkly Operations Pty Ltd undertook the Georgina Project, a greenfields drilling program targeting geophysical anomalies for IOCG mineralisation in the Proterozoic basement beneath Georgina Basin. Drilling allowed the gathering of basin architecture along with important properties of the underlying geology that will be used to constrain future modelling and targeting. Age dating was completed on a basement granite sample giving weighted mean 206/207Pb ages:1838 ± 5 Ma. In the overlying cover sequence drilling intersected trace iron, lead ± zinc sulphides in narrow intervals of fractured, brecciated and vuggy carbonates with a Mississippi Valley type mineralisation character suggesting potential for base metal mineralisation. In the basement extensive ‘redrock’ alteration with dispersed trace sulphides is consistent with the IOCG target concept and approaching target, despite no significant copper. The targeted gravity anomalies are not explained by the observed specific gravity of rocks intercepted. Alteration in the holes, in particular 24GPDD001, may indicate mineralisation (higher density rocks) off-hole and the drill data is being critically applied to re-modelling to guide a next phase of drilling. Drilling was suspended on the third hole (24GPDD003) at 97m due to an unexpected gas intersection. The target is still valid and remains untested. Three drill holes for 1,326.48m including 470.9m of RC pre-collars (24GPDD001, 24GPDD002, 24GPDD003 (abandoned)). Drill holes are available to view and sample through the Alice Springs Core Facility – fossiliferous interval noted in RC in Georgina Basin. Products provided: Detrital zircon U-Pb geochronology for basement granite sample, multi-element (XRF and 4 acid/ICP-MS), SG measurements, magnetic susceptibility measurements, core photos, and drill logs. Download through GEMIS: CR2025-0051: Round 17 - Geophysics and Drilling Collaborations program Greenfields drilling EL 32109

Round 18 of the Geohpysics and Drilling Collaborations program is open for application until Monday 28th April. To find out more visit, Exploration grants | Resourcing the Territory

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