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Tarcoola. Data release made in lieu of a 25% first partial relinquishment at licence renewal: [Part 2 of 2] progress reports for the period 19/7/1984 to 6/12/1990. Part 1 of 2 also included.
Created: 11 Nov 2024 Revised: 11 Nov 2024
Author: Toteff, S.;Cox, R.;Freytag, I.B.;Wright, P.;Cameron, J.;Mason, D.R.;Boord, R.A.;Gray, D.R.;Bridges, M.C.;Boyd, D.R.;Gregory, R.T.;Irvine, R.G.;Kerr, T.;Jarvis, D.M.;Parrington, P.J.

Exploration of the Tarcoola Gold Field by Aberfoyle Resources began in mid-1984, following a partial relinquishment of other ground at licence renewal, when some promising gold assay values were detected from rock and mine dump sampling....

Exploration of the Tarcoola Gold Field by Aberfoyle Resources began in mid-1984, following a partial relinquishment of other ground at licence renewal, when some promising gold assay values were detected from rock and mine dump sampling. Geological mapping, air photo interpretation and photogrammetry, plus ground magnetic and IP surveys, were followed by RAB drilling (21 holes, total 1127 m) which detected sub-economic gold in altered granite and basic intrusive bodies (best grades being 3 m @ 4.53 g/t Au) and in fractured pyritic arkose (best grade 7.5 m @ 2.73 g/t Au). Subsequent exploration comprised an airborne magnetic/radiometric survey of the greater goldfield area, and further rock chip, mine dump and BCL soil sampling. A number of IP anomalies were outlined, and several significant gold values were reported from backhoe trenching. Drilling of an additional 421 RC holes (total 12,272 m) and 12 diamond holes (total 1000 m) returned further significant gold values from the Perseverance and Last Resource prospects, 3 km west of Tarcoola. Ground magnetic survey results from lines laid out over the Mulgathing gold-in-soil geochemical anomaly, located 12 km west-southwest of Tarcoola, suggested a granitoid source for the gold, but subsequent BCL soil, stream sediment and trench sampling to obtain detailed geochemical results in this area yielded gold values which were disappointing. Indicated mineral resources for the combined Perseverance / Last Resource prospect areas were calculated in December 1990 using an economic cut-off grade of 1 g/t Au. An in-situ resource of 137 000 tonnes @ 4.2 g/t Au included a mineable 46 000 tonnes @ 5.3 g/t Au. Exploration of the Tarcoola region has remained on-going since 1990 under different tenure.

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About this record

Record No mesac18621
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Roy Cox and Associates Pty Ltd;Geoterrex Pty Ltd;Monash University, Department of Earth Sciences;Amdel Ltd
Sponsor
Tenement
Tenement Holder Aberfoyle Resources Ltd;Afmeco Pty Ltd;BHP Minerals Ltd
Operator Aberfoyle Resources Ltd;BHP Gold Mines Ltd
Geological Province Gawler Craton
Mine Name Tarcoola Blocks mine;Royal George mine;Perseverance mine;Last Resource mine;Wondergraph mine;Enterprise mine;White Hope mine;Eclipse mine;Curdnatta mine;Gallipoli mine;Excelsior mine;Tarcoola United mine;Mulgathing prospect;Battery Point prospect
Stratigraphy
Commodity
Notes 
Notes: Reports on Afmeco's early exploration of the Tarcoola area carried out over the period June 1978 to April 1984, which are held in volumes 1-6 of this Envelope [comprising this data release Part 1 of 2], are indexed separately. Afmeco...
Notes: Reports on Afmeco's early exploration of the Tarcoola area carried out over the period June 1978 to April 1984, which are held in volumes 1-6 of this Envelope [comprising this data release Part 1 of 2], are indexed separately. Afmeco formally withdrew from the Tarcoola joint venture on 30/9/1988.  Includes as appendices to various progress reports:   - Gray, D.R., April 1988.  Report on structural aspects of the Tarcoola Gold Field, SA  (Monash University, Department of Earth Sciences, consultant's report for BHP Gold Mines Ltd). p: 1160-1187;   - Bridges, M.C., June 1988.  Advice on engineering logging of exploratory diamond drill cores, Tarcoola gold prospect, SA (James Askew Associates Pty Ltd mining and geotechnical consultant's report to BHP Minerals).  p: 1199-1232;   - Boyd, D.R., August 1988.  Tarcoola Gold Field : interpretation of an airborne magnetic and radiometric survey carried out for BHP Exploration Pty Ltd in December 1986  (consultant's report to BHP).  p: 1233-1243;   - Gray, D.R. and Gregory, R.T., August 1988.  Report on the oxygen isotope ratios of quartz veins from the Tarcoola Gold Field, SA  (Monash University, Department of Earth Sciences, consultants' report for BHP Gold Mines Ltd). p: 1244-1251;   - Irvine, R.G. and Kerr, T., November 1988.  Interpretation of Tarcoola IP surveys, August-September 1987  (BHP Minerals Ltd). p: 1298-1343.
Geographic Locality: Tarcoola;Tarcoola Gold Field;Dark Hill;Tolmer Hill;Tarcoola Hill;Brown Hill;1986 Mount Eba Aerial Magnetic Survey [part];1986 Mount Eba Aerial Radioactivity Survey [part]
Doc No: Env 03306 p: 324-1797
Drillhole: TP1 - TP21;(232284 - 232384);TC1 - TC114;TD1 - TD12;(206152 - 206163);TAP1 - TAP282;(231411 - 231692);TAR1 - TAR25;(185433 - 185451)
Drillhole Unit No: 5836 01258;THROUGH;5836 01269;5836 02936;5836 02956;5736 00916;5736 01096;5836 02281;5836 02380

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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/mesac18621
Citation Toteff, S.;Cox, R.;Freytag, I.B.;Wright, P.;Cameron, J.;Mason, D.R.;Boord, R.A.;Gray, D.R.;Bridges, M.C.;Boyd, D.R.;Gregory, R.T.;Irvine, R.G.;Kerr, T.;Jarvis, D.M.;Parrington, P.J. Tarcoola. Data release made in lieu of a 25% first partial relinquishment at licence renewal: [Part 2 of 2] progress reports for the period 19/7/1984 to 6/12/1990. Part 1 of 2 also included. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac18621

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[134.5,-31],[135,-31],[135,-30.5],[134.5,-30.5],[134.5,-31]]]}
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