SkyTEM Survey underway at Okiep Copper Project
Orion Minerals Limited
Incorporated in the Commonwealth of Australia
Australian Company Number 098 939 274
ASX share code: ORN
JSE share code: ORN
SkyTEM Survey underway at Okiep Copper Project
Survey targeting Cu sulphide mineralisation hosted in mafic intrusive bodies
- SkyTEMTM Survey covering 1,827km2 underway at Okiep Copper Project.
- Orion’s high priority area of 857km2 will be surveyed at 150m line spacing.
- Survey expected to take 5-6 weeks to complete.
Orion’s Managing Director and CEO, Errol Smart, commented:
“It’s almost unthinkable that a district that has produced more than 2 million tonnes of copper from sulphide ore
with associated pyrrhotite has never been surveyed with airborne electromagnetic (EM) methods. Modern
explorationists consider high power airborne EM as a primary exploration tool for this style of mineralisation.
“The powerful geophysical tools that we are using will be targeting mafic intrusive bodies with high magnetite
content, that we expect will be detected with natural magnetism and that will have small zones of conductive
pyrrhotite content associated with copper sulphides, that will be detected by the powerful EM instruments.
“We are also surveying the surrounding area in collaboration with Council for Geosciences, in order to identify
the district scale structural controls on emplacement of the mafic intrusive bodies, that will assist all explorers
working in the district, which we believe has potential to return to being a major copper producing district.”
Orion Minerals Limited (ASX/JSE: ORN) (Orion or the Company) is pleased to announce that the Okiep District
SkyTEMTM helicopter borne geophysical survey has commenced. Importantly, the SkyTEMTM survey includes the
Okiep Copper Project area, located 570km north of Cape Town in the Northern Cape Province of South Africa,
which is currently under option to Orion (refer ASX release 2 February 2021).
Okiep Copper Project
The combined Council for Geosciences (CGS) and Orion field teams have confirmed that the recently
announced SkyTEMTM survey has commenced (refer Figure 1 and ASX release 1 June 2021). The regional survey
will cover an area of approximately 1,827km2, with approximately 1,073 line kms flown at 1km line spacing. Orion’s
focussed exploration area of approximately 857km2 will have 6,157 line kms flown at 150m line spacing (Figure
The average height of the helicopter borne survey will range between 35m – 45m above ground level, collecting
high quality data, including electromagnetic data, total magnetic intensity and residual magnetic intensity data.
Various processed outputs and derivatives will be available to assist in target generation and prioritisation.
The instruments being used are the deep penetrating SkyTEM312HP with the 12.5 Hz, low frequency system and
the Geometrics Caesium Vapour type 822A total intensity magnetometer.
The survey is expected to take approximately 5 - 6 weeks to complete, weather permitting.
The geophysical data collected will be used to map out structure and potential mineralised mafic intrusives.
Given the significant historic copper production and identified resources in the district, Orion is confident this first-
time employment of high powered airborne electromagnetic (EM) tools will assist in identifying high priority drill
targets aimed at the discovery of new high-grade copper deposits.
Figure 1: SkyTEMTM fly-over at Carolusberg Mine (defunct shaft in foreground).
Figure 2: Okiep Copper Project – SkyTEMTM geophysical survey (also showing known historical mines and Cu prospects).
For and on behalf of the Board.
Managing Director and CEO
28 June 2021
Investors Media JSE Sponsor
Errol Smart – Managing Director & CEO Nicholas Read Monique Martinez
Denis Waddell – Chairman Read Corporate, Australia Merchantec Capital
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Date: 28-06-2021 07:36:00
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