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Data release [made at SA Director of Mines’ discretion] : Stony Hill (part of the Northern Eyre Peninsula Project). First annual report (submitted prior to start of the project's joint reporting status), for the period 2/12/2004 to 1/12/2005.
Created: 12 Nov 2024 Revised: 12 Nov 2024
Author: Gaughan, C.;Cowan, D.R.

A licence area covering the subdued hilly terrain lying a short distance to the west of the northern Middleback Range on north-eastern Eyre Peninsula was taken up to explore for possible economic buried deposits of stratabound magnetite iron ore...

A licence area covering the subdued hilly terrain lying a short distance to the west of the northern Middleback Range on north-eastern Eyre Peninsula was taken up to explore for possible economic buried deposits of stratabound magnetite iron ore which might occur in Palaeoproterozoic basement metasediments, as well as for any economic base or precious metal mineralisation that might also occur in the basement rocks. Initially, office studies of available geophysical and open file geological data were performed during 2005 to try to identify possible drilling targets. Reprocessing of historic government and company open file aeromagnetic data was done for the entire portfolio of Centrex Metals' SA exploration tenements. Data spacing and quality were variable, which led to some uncertainty in drill target selections. Consequently, in November 2005 a new detailed airborne magnetic, radiometric and digital elevation model survey was flown over the Stony Hill area, for a total of 1635 line km acquired along east-west flight line spaced 100 m apart, using a nominal sensor height of 30 m above the ground surface. The survey's expenses and data were shared between Centrex Metals and Lincoln Minerals. According to the JV's geophysical consultant, the new Stony Hill survey's detailed data had dramatically improved the resolution of magnetic anomalies, revealing details of fold and fault structures considered to be highly prospective for haematite and magnetite ore. The central BIF zone could now be seen to consist of several parallel trends, with variations in anomaly amplitude along strike. The main high amplitude BIF anomaly was seen to have a strike length of ~6 km, with a separate high amplitude zone in the south. The BIFs appeared to be totally enclosed in Lincoln Complex rocks, with evidence seen of both strike faulting and cross faults.

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About this record

Record No mesac25257
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor UTS Geophysics Pty Ltd;Cowan Geodata Services
Sponsor Centrex Metals Ltd;Lincoln Minerals Limited
Tenement EL 3287
Tenement Holder Centrex Metals Ltd;Lincoln Minerals Limited;South Australian Iron Ore Group Pty Ltd
Operator Centrex Metals Ltd;Lincoln Minerals Limited
Geological Province
Mine Name
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.  Before it began its tenure of EL 3287 Stony Hill, Centrex Metals became a partner in the SAIOG (South Australia Iron Ore Group) joint venture with Portman Iron Ore Ltd. Centrex acquired 100% ownership of SAIOG and its tenements in September 2003. The focus of Centrex’s exploration was iron ores. After 8/7/2005, Lincoln Minerals Limited acquired rights to all non-ferrous minerals within the tenement, by entering into a multi-licence joint venture agreement with Centrex called the Northern Eyre Peninsula Project.  Includes:   - Cowan, D.R., May 2005. [Report on] Magnetic and gravity interpretation of Centrex tenements, Eyre Peninsula, South Australia (Cowan Geodata Services consultant's report for Centrex Metals). Attachment 2 to EL 3287 first annual report to 1/12/2005. 40 pages, figures, references;   - Pal, M., August 2005. A preliminary report on Eyre Peninsula's iron resources potential (geological consultant's report for Centrex Metals). Attachment 3 to EL 3287 first annual report to 1/12/2005. 83 pages, 2 appx, figures, plates, references, tables;   - Gaughan, C., 4/11/2005. Model for iron mineralisation in the Middleback iron formations of the Hutchison Group (Centrex Metals geologist's report). Attachment 1 to EL 3287 first annual report to 1/12/2005. 11 pages, figures, 2 ref.
Geographic Locality: Western Middleback Range;Stony Hill;Polygonum Swamp;Gilles Downs Station;2005 Stony Hill Aerial Magnetic Survey;2005 Stony Hill Aerial Radioactivity Survey;2005 Stony Hill Aerial DEM Survey
Doc No: Env 11111

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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/mesac25257
Citation Gaughan, C.;Cowan, D.R. Data release [made at SA Director of Mines’ discretion] : Stony Hill (part of the Northern Eyre Peninsula Project). First annual report (submitted prior to start of the project's joint reporting status), for the period 2/12/2004 to 1/12/2005. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac25257

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[136.5,-33.5],[137.5,-33.5],[137.5,-32.5],[136.5,-32.5],[136.5,-33.5]]]}
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