PACE Discovery Drilling (drilling partnerships with DSD and industry): Year 8 partnership DPY8-09 - Margaret Dam, southern margin, Peake and Denison Inliers, kimberlite diamond prospect. Drilling project final report.
Created: 12 Nov 2024 Revised: 12 Nov 2024

Monax Alliance's Margaret Dam Project is located on their EL 5347 Francis Creek, which is centred approximately 40 km south of William Creek in northern South Australia. The initial project work done for licence operator Monax Mining by...

Monax Alliance's Margaret Dam Project is located on their EL 5347 Francis Creek, which is centred approximately 40 km south of William Creek in northern South Australia. The initial project work done for licence operator Monax Mining by geophysical consultant David Miller, who was originally directed to find and assess possible IOGC deposit signatures in the basement, could not identify any compelling such anomalies in the local regional geophysical data, but instead attention became focussed on a newly recognised discrete and prominent residual magnetic anomaly which potentially could represent a kimberlite, on the basis of perceived geological and geophysical similarities to other known kimberlites. Geophysical modelling of new detailed ground magnetic and gravity survey data which was subsequently collected over the anomaly by Monax in November 2014 indicated that it could possibly be due to two slightly separated source kimberlite bodies, with their eroded top surfaces lying at a depth of approximately 80 m below ground level. The target was considered significant due to the past discovery of many diamonds and fresh diamond indicator minerals in the southern Peake and Denison Ranges and adjoining plains region, and because of the failure of previous company exploration to locate a kimberlite source for these dispersed rare minerals. As part of approved PACE Initiative Year 8 drilling project DPY8-09, DSD financially assisted Monax to complete one rotary precollared vertical diamond drillhole (MDDD1501) to a total depth of 108.17 m during late June 2015 to test the EL 5347 kimberlite target. The drillhole, after passing through the Mesozoic Great Artesian Basin sedimentary sequence typical for the area, encountered a mafic intrusive body at approximately 72 m depth below ground level. This buried mafic rock contains minor magnetite, and modelling of magnetic susceptibility readings made on it suggested that the intrusion's composition would adequately generate the targeted magnetic anomaly. Petrological studies undertaken on two drill core samples of the mafic rock concluded that it is an altered olivine dolerite. Limited geochemical analysis of the dolerite showed that it contains anomalous copper, with up to 0.17% Cu reported in a one-metre core sample taken from 106-107 m depth.

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About this record

Record No mesac27174
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Integrated Exploration Solutions;AsIs International Pty Ltd;Pontifex and Associates Pty Ltd
Sponsor Monax Mining Limited;Antofagasta Minerals S.A.
Tenement EL 5347
Tenement Holder Monax Alliance Pty Ltd
Operator Monax Mining Limited
Geological Province
Mine Name Margaret Dam magnetic anomaly
Stratigraphy
Commodity
Notes
Notes: PACE project code DPY8-09 : company final submission includes exploration drilling actual total cost ($82,757.00 excluding Goods and Services Tax), out of which PACE Initiative funds have paid $41,378.50 (excl. GST).
Geographic Locality:...

Notes: PACE project code DPY8-09 : company final submission includes exploration drilling actual total cost ($82,757.00 excluding Goods and Services Tax), out of which PACE Initiative funds have paid $41,378.50 (excl. GST). Geographic Locality: Francis Swamp;Woomera Prohibited Area;SAEI Area C4 Aerial Magnetic Survey Doc No: Env 12971 Drillhole: MDDD1501;(291303)

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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/mesac27174
Citation Swain, G.M.;Ferris, G.M.;Miller, D.T.;Bubner, G.J.;Purvis, A.C.;Pontifex, I.R. PACE Discovery Drilling (drilling partnerships with DSD and industry): Year 8 partnership DPY8-09 - Margaret Dam, southern margin, Peake and Denison Inliers, kimberlite diamond prospect. Drilling project final report. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac27174

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[136,-33.5],[137,-33.5],[137,-29],[136,-29],[136,-33.5]]]}
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