Parachilna (part of the Flinders Ranges Project). Final report at licence expiry/full surrender, for the period 14/10/1999 to 18/8/2017.
Published: 08 Oct 1917 Created: 12 Nov 2024 Revised: 12 Nov 2024

Following on from a previous data release for the subject licence that covered the period October 1999 to December 2010, this report deals with Perilya's activities performed since then, i.e. surface geochemical sampling and portable XRF...

Following on from a previous data release for the subject licence that covered the period October 1999 to December 2010, this report deals with Perilya's activities performed since then, i.e. surface geochemical sampling and portable XRF spectroscopic analysis undertaken in several field sorties between 2014 and 2014. A total of 614 soil samples and 13 rock chip samples were assayed for major and trace elements, and the relevant data is presented herein. The targets so evaluated were primarily developed based on Aster mulstispectral satellite remote sensing data covering the Flinders Ranges region that was purchased by Perilya in 2011. Aster quartz ratio index images (relevant example provided) were used to determine the extent of carbonate strata in the licence area, while Fe-ratio images (ditto) were used to identify potential haematite alteration. Although Fe-ratio data from both the PAR-1 and PAR-5 targets was deemed to be ambiguous, both of these targets did display probable structural dilational offsets suitable for the accumulation of zinc silicate mineralisation. Furthermore, the PAR-1 target was also associated with an interpreted body of Callana Group intrusive breccia. Soil geochemical sampling at PAR-1 returned assay maxima of only 294 ppm Zn, 39 ppm Pb and 211 ppm Cu, and no significant pathfinder element anomalism was apparent from later analysis of rock chip samples. Accordingly, no further work was recommended on this target. Extremely rugged topography in the area of the PAR-5 target in the southern portion of EL 5751 prevented gathering systematic surface geochemical sample coverage over the target. Although reconnaissance lines were completed over the western portion of the mapped Cambrian strata, sampling over the Proterozoic contact on those rocks' eastern margin was limited to locations along the base of the main range and along creek beds and ravines. A total of 458 pXRF soil analysis readings were taken, and although numerous moderately anomalous base metal values were returned (up to 1139 ppm Zn, plus up to 1378 ppm Pb), these points were isolated and scattered throughout the target area, and no zone of consistent anomalism could be defined. Rock chip sampling was concentrated in the areas of these sporadic good XRF results, but no anomalous pathfinder element results were returned from any of the 10 samples collected. Because no base metal anomalism suggestive of a sizeable bedrock-hosted zinc silicate or other type mineral occurrence was detected by the above-described work, and because no other targets remained for evaluation, it was decided to surrender the two remaining pieces of the original licence ground.

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About this record

Record No mesac27587
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor
Sponsor
Tenement
Tenement Holder Perilya Limited
Operator
Geological Province
Mine Name
Stratigraphy
Commodity
Notes
Geographic Locality: Northern Flinders Ranges;Elder Range;Parachilna Gorge;Druid Range
Doc No: Env 13030

Geographic Locality: Northern Flinders Ranges;Elder Range;Parachilna Gorge;Druid Range Doc No: Env 13030

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/mesac27587
Citation Rogers, D. 1917. Parachilna (part of the Flinders Ranges Project). Final report at licence expiry/full surrender, for the period 14/10/1999 to 18/8/2017. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac27587

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[138,-31.5],[139,-31.5],[139,-30.5],[138,-30.5],[138,-31.5]]]}
Purpose

                    
                    

                    
                  
Lineage