Mt Craig Critical Minerals Project. Final report, Project ADI RD03-411 [Accelerated Discovery Initiative Round 3, 2022]. Morgan Creek Prospect Drilling and Geophysics Programs, April 2023.
Created: 12 Nov 2024 Revised: 12 Nov 2024

This ADI funded programme consisted of exploration drilling, geophysics programs and aboriginal employment relating to critical mineral exploration conducted over the Mt Craig Project in the Flinders Ranges of South Australia. ADI funded...

This ADI funded programme consisted of exploration drilling, geophysics programs and aboriginal employment relating to critical mineral exploration conducted over the Mt Craig Project in the Flinders Ranges of South Australia. ADI funded activities were carried out on the Morgan Creek Prospect area which is the focus location for discovery of critical minerals including rare earth elements. Morgan Creek is located on the southern portion of the Worumba anticline tenement package. It covers an entire zone from west to east across the anticline structure and diapiric rocks. Taruga considers the Adelaide geosyncline and areas such as Morgan Creek, frontier terrain where there is scope for unlocking mineralisation potential through discoveries using modern exploration and testing concepts not previously considered. This is especially the case in areas of diapirism in which the relationship to mineralisation has historically been debated and has in general not been well understood. During the ADI funded period, Taruga conducted drilling and high-resolution ground magnetic surveys of the Morgan Creek prospect area. Approximately 2,156 m of RAB drilling from 59 inclined holes and 212 m of Auger drilling from 79 completed vertical holes was conducted. In addition, over 350-line km worth of ground magnetics data was acquired. The aim of the auger drilling was to provide a broad geochemical dataset from below the soil horizon/in the saprock over the Yednalue formation and the surrounding alluvial landforms to provide vectoring and validation to targets. Samples were analysed inhouse using a handheld portable XRF, allowing for instantaneous results for timely interpretation and exploration planning. The purpose of the RAB drilling program was to test the strike extension of previously intersected REE mineralisation at Hydrothermal Hill. The program aimed to test the exploration model that rare earth element enrichment is potentially ionically absorbed and occurs within the highly oxidised and weathered zones of the Yednalue formation. All RAB samples were initial analysed with the portable XRF and then submitted for laboratory analysis. Drilling highlight include hole MCRB044 – 43 m @ 1687 ppm TREO from surface to EOH, including 5 m @ 3,343 ppm TREO from 12 m, with 1 m @ 9,082 ppm TREO from 13 m, and hole MCRB053 – 31 m @ 1,444ppm TREO from surface to EOH including 2 m @ 2,656 ppm TREO from 16 m, and 6 m @ 3,903 ppm TREO from 22 m with 2 m @ 5,760 ppm TREO from 24 m. Taruga carried out an in-house ground magnetic survey in select areas of the Morgan Creek Critical Minerals Prospect. High resolution images were produced by Southern Geoscience Consultants to assist with exploration model development and future drilling targets. The geophysics work in combination with other exploration tools such as mapping, and surface sampling has ultimately led to the discovery of REE mineralisation at Morgan Creek. Given the nature of the REE mineralisation Taruga is continuing to expand its knowledge of the and the lithological and structural relationships with mineralisation and at this prospect. Taruga advertised extensively and managed to find and employee a full-time local Adnyamathanha person as a field technician. Taruga engaged local Aboriginal owned businesses for auger drill hire and maintenance whilst other businesses supplied Cultural Awareness and sensitivity training to staff.

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About this record

Record No mesac30432
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Exploration Initiative
Contributor Taruga Minerals Limited
Sponsor
Tenement EL 6541
Tenement Holder Taruga Minerals Limited
Operator
Geological Province Adelaide Geosyncline
Mine Name
Stratigraphy
Commodity
Notes
Geographic Locality: Morgan Creek;Mount Craig;Worumba Anticline;Worumba Diapir
Doc No: Env 13396

Geographic Locality: Morgan Creek;Mount Craig;Worumba Anticline;Worumba Diapir Doc No: Env 13396

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/mesac30432
Citation Mt Craig Critical Minerals Project. Final report, Project ADI RD03-411 [Accelerated Discovery Initiative Round 3, 2022]. Morgan Creek Prospect Drilling and Geophysics Programs, April 2023. Exploration Initiative
https://pid.sarig.sa.gov.au/document/mesac30432

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[138,-32.5],[139,-32.5],[139,-31.5],[138,-31.5],[138,-32.5]]]}
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