Data release [made at SA Director of Mines’ discretion] : Carnding. Annual reports to licence expiry/renewal, for the period 5/7/2005 to 4/7/2009.
Created: 12 Nov 2024 Revised: 12 Nov 2024

EL 3369 is located in the central Gawler Craton, and is centred approximately 35 km west and west-northwest of Tarcoola. The licence area consists of two geographically separate [by ~5 km] blocks – exploration activity in the eastern block has...

EL 3369 is located in the central Gawler Craton, and is centred approximately 35 km west and west-northwest of Tarcoola. The licence area consists of two geographically separate [by ~5 km] blocks – exploration activity in the eastern block has included drill-based evaluation of the “Soyuz” gold-copper prospect, while activity in the western block has focussed on establishing whether a continuation of the roll-front uranium mineralised Warrior Palaeochannel is present. Previous exploration of the Soyuz prospect, when held under separate prior tenure by Grenfell Resources and Gravity Capital as EL 2694, had included ground magnetic and gravity surveys plus soil sampling that defined several magnetic anomalies with coincident copper-in-soil and gravity anomalies; these were later sporadically tested by campaigns of shallow RAB, aircore hammer and RC drilling. Some of the drillholes encountered anomalous (+0.1 ppm Au) to highly anomalous (+10 g/t Au) gold over variable widths that defined a central high grade gold zone (‘CGZ’), besides revealing a number of other mineralised trends that were considered worthy of follow-up deep RC drilling. During 2005-2006, EL 3669 current operator Stellar Resources ('Stellar') completed a series of RAB/aircore hammer traverses and a number of deeper RC drill traverses to test the depth and strike continuity of the ‘CGZ’ and to test two secondary targets - a coincident soil copper and gravity anomaly to the north-east of the ‘CGZ’, and a local magnetic high to the north-west. All three target areas were regarded as having high prospectivity for economic mineralisation, since the earlier high grade gold intersections might possibly be distal vein occurrences to iron-oxide Cu-Au style mineralisation associated with the geophysical targets. During July 2005, 72 RAB hammer drillholes were completed at Soyuz, each to 40 m depth across the extent of the geophysical target zone (magnetics and gravity), to better define geochemical target areas. Three main gold anomalous zones were outlined. Later, 18 inclined RC drillholes were completed along 6 traverses for a total penetration of 1750 m during the period March-April 2006 as part of a PACE Initiative co-funded collaborative exploratory drilling project with the SA Government [PACE Project DPY2-40, with results previously reported in open file Env 11,176]. RC drilling within the CGZ intersected only narrow mineralised intervals (maximum assay value 2 m @ 4.4 g/t Au) beneath previous high grade gold intercepts. This drilling also intersected wider zones of weak mineralisation, including 48 m @ 0.15 g/t Au. Testing of the coincident copper-gravity anomaly returned only weakly elevated Cu values and weakly mineralised Au intervals. Drilling of the main magnetic feature returned anomalous Au values (max 2 m @ 2.2 g/t Au) within selvedges to intense K-silicate (magnetite-biotite) alteration. During licence Year 1 of EL 3369, Stellar purchased EL 3372, located a little distance to the north of the western block of EL 3369, because this particular ground includes historically defined Tertiary palaeochannel - hosted uranium mineralisation within the “Warrior” channel. Subsequently, airborne electromagnetic surveying using the proprietary GPX “HoistEM” system was carried out over EL 3372, and additional reconnaissance flight lines were included over both blocks of EL 3369, primarily to investigate the likely distribution of palaeochannel sediments. Total survey coverage was 661.3 line km, with EM, magnetic and DEM readings taken at a nominal 35 m mean terrain clearance height. In the western block of EL 3369, the AEM data indicated a likely southward continuation of the Warrior channel, so a single traverse of aircore drilling was carried out along Line 26 near the Trans-Australian Railway to investigate this interpretation. Buried channel sediments were confirmed, containing low level anomalous uranium and elevated gold values. During licence Year 2, Stellar undertook regional 200 m x 200 m and infill 50 m x 50 m surface calcrete sampling in the vicinity of the previously defined Sunshine prospect located near the Bulgunnia Shear Zone (total of 1234 samples submitted for assay), to explore for Challenger style metamorphic gold mineralisation associated with previously defined anomalous drill assay results and interpreted favourable stratigraphic units and fold structures. The calcrete sampling returned anomalous values to 56 ppb Au within a larger trend of anomalous values, although the 745 infill calcrete sample gold assay results often displaced and in some cases reduced the tenor of the initial anomalies. Overall, the sampling defined a main narrow north-south trending anomaly of approximately 300 m length and 100 m width centred to the north-west of previously defined moderately anomalous gold-in-calcrete values. Test drilling was planned for early 2008. Also during this year, new EL 3369 farminees Uranium SA (July 2006) and Toro Energy Limited (March 2007) undertook airborne EM surveys over their respective (licence eastern sub-block and licence western sub-block) joint venture areas. Toro defined the existence of interpreted extensions of the uranium mineralised Warrior Palaeochannel within the western part of its Carnding West JV area, with drilling planned for 2008 dependent on Native Title negotiations. Uranium SA likewise from ~55 line km of AEM data acquired during May 2007 was able to define the existence of interpreted prospective palaeochannels within its Carnding East JV area, and subject to Native Title negotiations, also planned to undertake a rotary mud drilling programme in early 2008. During January-February 2008, Stellar undertook shallow appraisal RC drilling at the Sunshine gold occurrence, of 27 inclined shallow holes into Archaean bedrock (although 8 holes were abandoned before reaching this target) for a total penetration of 1156 m, to test several gold-in-calcrete anomalies. Generally, only low level gold values were encountered, primarily in the vicinity of historical reported drill intercepts, e.g. near the 20 m @ 0.41 g/t Au previously recorded from 18-38 m depth in hole SUNRC012. In response to this lacklustre result, Stellar decided to review all of the drillhole and soil calcrete gold occurrence data for the licence area to try to assess the strategic importance to ongoing exploration decision-making / prioritisation of the numerous anomalous gold values seen within a thin transported cover of aeolian and sheet flow material that has developed over an extensive calcrete sheet. No uranium exploration field work was performed by the joint venture partners during licence Year 3: instead their activities were confined to making preparations for drilling and doing further AEM data interpretations. During licence Year 4 of EL 3369, Stellar carried out a small rock chip sampling programme at Sunshine prospect (8 samples of exposed basement collected for 52 element assaying). This surface sampling yielded disappointing results, with no anomalous trace metals detected, and gold levels being below detection limit. Nevertheless, Stellar gave notice that it intends to drill 58 inclined RC holes along six north-south traverses crossing the Bulgunnia Shear Zone, commencing in August 2009. No other field work took place, as principal farmin partner Toro Energy decided to withdraw from ongoing exploration at Carnding, and Uranium SA's planned campaign of palaeochannel drilling for uranium still remained pending. A Native Title Mining Agreement for exploration was signed between the Aboriginal claimant group and licence joint venture partners Uranium SA and Stellar, to allow the drilling to proceed.

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About this record

Record No mesac25448
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Fugro Airborne Surveys Pty Ltd;GPX Airborne Pty Ltd
Sponsor Stellar Resources Ltd;Uranium SA Pty Ltd;Toro Energy Limited
Tenement EL 3369
Tenement Holder Hiltaba Gold Pty Ltd;Uranium SA Pty Ltd;Toro Energy Limited
Operator Stellar Resources Ltd
Geological Province
Mine Name Soyuz prospect;Sunshine prospect
Stratigraphy
Commodity
Notes
Notes: This release to the public of the subject mineral exploration data, namely, company data which was acquired more than 5 years ago, is being done by DMITRE in accord with the provisions of Section 77D of the Mining Act 1971 and Regulation 88...

Notes: This release to the public of the subject mineral exploration data, namely, company data which was acquired more than 5 years ago, is being done by DMITRE in accord with the provisions of Section 77D of the Mining Act 1971 and Regulation 88 of the Mining Regulations 2011. The so-called 'Carnding West' portion of EL 3369 was subject to a joint venture agreement for all minerals which Hiltaba Gold Ltd made with Toro Energy Limited, which was in force from 1/3/2007 until it was terminated by Toro on 2/6/2009 by that company giving the licensee 30 days notice of its intention to withdraw. Geographic Locality: Tarcoola;Mulgathing Station;Carnding Road Outstation;Wilgena Station;Woomera Prohibited Area;Warrior Palaeochannel;2005 Warrior Aerial EM (HoistEM) Survey;Bulgunnia Fault Zone;2006 Carnding (West) Aerial EM (TEMPEST) Survey;2007 Tarcoola Aerial EM (RepTEM) Survey [part];2007 Tarcoola Aerial Magnetic Survey [part];2007 Kingoonya Aerial EM (RepTEM) Survey;2007 Kingoonya Aerial Magnetic Survey Doc No: Env 11288 Drillhole: SZAC012 - SZAC083;(267020 - 267091);SZRC018 - SZRC035;(218972 - 218989);WAAC029 - WAAC038;(315252 - 315261);SUNRC020 - SUNRC046;(315215 - 315241)

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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/mesac25448
Citation Anderson, C.G.;Rava, B.;Rigg, A.M. Data release [made at SA Director of Mines’ discretion] : Carnding. Annual reports to licence expiry/renewal, for the period 5/7/2005 to 4/7/2009. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac25448

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[134,-31],[134.5,-31],[134.5,-30.5],[134,-30.5],[134,-31]]]}
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