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Truro. First annual report plus final report to licence full surrender, for the period 13/9/1996 to 30/3/1999.
Published: 27 Jul 1998 Created: 29 Oct 2024 Revised: 07 Dec 2024
Author: Raddock, A.K.;Carter, R.

Following earlier identification by PIRSA of mineralised gossans located at the stratigraphic contact between the Cambrian Karinya Shale and Backstairs Passage Formation, exploration comprising rock chip, soil and stream sediment geochemical...

Following earlier identification by PIRSA of mineralised gossans located at the stratigraphic contact between the Cambrian Karinya Shale and Backstairs Passage Formation, exploration comprising rock chip, soil and stream sediment geochemical sampling, drilling (3 inclined RC and 2 inclined diamond holes totalling 312 m and 475 m respectively), and downhole geophysical surveys, targeted base metals within the Karinya Syncline. Anomalous base metal geochemistry was returned from the surface sampling, and downdip drilling of the contact yielded a best intersection of 4 m @ 3.5% Zn, 1.1% Pb and 10 ppm Ag. The mineralisation comprises sphalerite-galena contained within a carbonate facies below the Karinya Shale, and shows strong similarities to the Mississippi Valley style.

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About this record

Record No mesac18632
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor
Sponsor
Tenement EL 2198
Tenement Holder CRA Exploration Pty Ltd;Rio Tinto Exploration Pty Ltd
Operator CRA Exploration Pty Ltd;Rio Tinto Exploration Pty Ltd
Geological Province
Mine Name Malabena North prospect;Malabena South prospect;Deep Creek North prospect;Deep Creek South prospect;Truro Gossan (syn. Holmes-Watson) prospect
Stratigraphy
Commodity iron
Notes 
Notes: On 15/7/1991, CRA Exploration Pty Ltd (CRAE) changed its corporate name to Rio Tinto Exploration Pty Ltd (RTE).  The same area has been held for the previous 5 years by CRAE as EL 1732 (related diamond exploration reports are held in open...
Notes: On 15/7/1991, CRA Exploration Pty Ltd (CRAE) changed its corporate name to Rio Tinto Exploration Pty Ltd (RTE).  The same area has been held for the previous 5 years by CRAE as EL 1732 (related diamond exploration reports are held in open file Env 8481 and in partial relinquishment open file Env 8718).  Includes a report prepared by consultant J.C. Gum (University of South Australia, Geology Dept., Nov. 1997) entitled "Stratigraphy and petrology [of diamond drill core samples], Holmes-Watson prospect, The Basin, Karinya Syncline, South Australia".  Appx 8 to annual report to 11/9/1997.
Geographic Locality: Lower North;Truro;Keyneton;Tanunda Creek;Frankton;Stonefield;Deep Creek;Palmer Fault
Doc No: Env 09303
Drillhole: DD97TR029;(179171);DD97TR030;(179172);RC97TR031 - RC97TR033;(160411);(179173);(179174)

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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/mesac18632
Citation Raddock, A.K.;Carter, R. 1998. Truro. First annual report plus final report to licence full surrender, for the period 13/9/1996 to 30/3/1999. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac18632

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[139.001363,-34.581854],[139.301355,-34.581854],[139.301355,-34.165183],[139.001363,-34.165183],[139.001363,-34.581854]]]}
Purpose 

                    
                    

                    
                  		
                

              
                
                

                  
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