Kapunda. Progress reports to licence expiry/renewal for the period 11/12/1972 to 10/12/1973 [plus supporting data obtained from previous explorers].
Created: 13 Nov 2024 Revised: 15 Dec 2024

The resumption of brownfields mineral exploration at the historic Kapunda copper mine and nearby prospects, undertaken by a new company, has targeted previously identified copper geochemical anomalies lying on the abandoned mine leases and along...

The resumption of brownfields mineral exploration at the historic Kapunda copper mine and nearby prospects, undertaken by a new company, has targeted previously identified copper geochemical anomalies lying on the abandoned mine leases and along structural/stratigraphic features recognised at some distance to the north, east and west of these leases. Detailed geological mapping at 1:4800 and 1:1200 scales, plus much rock chip sampling and re-logging/re-assaying of existing drillhole stored samples, was carried out in the centre and on the eastern side of the Kapunda fault-breached anticlinal 'Dome', which disclosed elevated copper values disseminated within three Adelaidean units that lie near the base of or immediately below a thinned Tapley Hill Formation section. Reconnaissance stream sediment sampling and 1:9600 geological mapping was conducted over the whole licence area and was followed up by sampling of residual soils and rock outcrop, then by auger geochemical sampling of the bedrock beneath resultant anomalies (262 auger holes for 5240 feet total penetration), and finally by limited percussion drilling (11 holes for 2750 feet total penetration). This work showed that mineralisation of possible epithermal origin, but with some syngenetic component, is confined to the rocks occurring north of the River Light, particularly in the vicinity of the Kapunda 'Dome', and also adjacent to the Bremer Fault zone. The mineralised conjugate fracture sets examined at the Morphett mine prospect and at the Stephens mine prospect appear to have almost the same orientations as those present at the Kapunda mine, but are sub-economic for copper and have no other associated trace metals of interest, although one percussion drill cuttings sample did return minor gold (0.55 ppm Au). Some minor but significant copper and nickel mineralisation is related to basic dykes which intrude Cambrian carbonate rocks immediately to the west of the Bremer Fault, and it is thought that this setting may be somewhat similar to the lode situation seen at Burra. Disseminated, banded mineralisation formed in a tremolitic marble band up to 16 feet wide was once worked here at the Allen's Creek mine. It has been recommended that further work be focussed on identifying possible extensions to the Kapunda mine lodes of oxide and supergene sulphide copper ore that may carry northwards into the town precinct, besides evaluating the strong geochemical anomaly noted within the Tindelpina Shale Member along the axis of the Kapunda 'Dome'.

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About this record

Record No mesac5176
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Geosearch Pty Ltd
Sponsor Northland Minerals Ltd
Tenement EL 30
Tenement Holder Northland Minerals Ltd
Operator
Geological Province Adelaide Geosyncline
Mine Name Kapunda mine;Kapunda prospect;Sir Genkin Coles mine;Allen's Creek mine;Morphett mine;Stephen's mine
Stratigraphy
Commodity
Notes
Notes: Tenure over a slightly increased area covering the Kapunda prospect has since been retained by Northland Minerals under EL 113 (see Env 2362).  Includes:   - Spaargaren, F.A., 21/9/1972. Notes on the geology of an area near Kapunda, South...

Notes: Tenure over a slightly increased area covering the Kapunda prospect has since been retained by Northland Minerals under EL 113 (see Env 2362). Includes: - Spaargaren, F.A., 21/9/1972. Notes on the geology of an area near Kapunda, South Australia (Robertson Research (Australia) Pty Ltd consultant's report for Northland Minerals Ltd). In Appx 14 of EL 30 progress report to June 1973. 13 pages, 1 appx, 4 maps, 2 ref. Also includes lithologs and prospect grid location coordinates of 34 inclined percussion drillholes put down on geochemical anomalies at Kapunda during March-April 1970 by Noranda Australia Ltd (logged by C. Harivel and A. Thomas) under an option agreement that was signed with then principal explorer Mines Exploration Pty Ltd. Geographic Locality: Central-northern Mount Lofty Ranges;Kapunda;River Light;Belvidere;Bremer Fault Doc No: Env 02272 Drillhole: PDH PK1 - PK2A;PK3 - PK11;Mines Exploration DDH KP3;Noranda Australia PDH P1 - P10, J1 - J6, Z11 - Z17;Noranda Australia PDH M5 - M10, F2 - F4, K3 - K4 Drillhole Unit No: 6629 01974;THROUGH;6629 01980;6629 00572

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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/mesac5176
Citation Hughes, M.;Melville, P.M.;Lawton, J.;Pursell, D.C.;Spaargaren, F.A. Kapunda. Progress reports to licence expiry/renewal for the period 11/12/1972 to 10/12/1973 [plus supporting data obtained from previous explorers]. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac5176

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[138.868027,-34.415188],[138.984694,-34.415188],[138.984694,-34.29852],[138.868027,-34.29852],[138.868027,-34.415188]]]}
Purpose

                    
                    

                    
                  
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