Cross section at Hillside (74400N) showing the location of the copper mineralisation within drill hole HDD024.
Melbourne, May 20, 2009 AEST (ABN Newswire) - Rex Minerals Limited (ASX:RXM) is pleased to report further drilling results from its Hillside copper-gold-uranium project on the Yorke Peninsula in South Australia which confirms the encouraging depth and grade potential of the project.
Drilling at Hillside during April and May has identified extensions to the high grade copper mineralisation intersected in drill hole HDD018 (announced 12 January 2009) and has increased the interpreted thickness of the copper mineralisation at this location.
The results have also increased the depth extent of copper mineralisation on the Dart Fault Zone from 450m to over 650m below the surface.
Highlights from the recent drilling at Hillside include:
- 98m @ 0.5% copper and 0.1g/t gold from 400m in drill hole HDD024W2.
- 51m @ 1.5% copper and 0.1g/t gold from 609m in drill hole HDD024W2.
- 86m @ 0.6% copper and 0.1g/t gold from 413m in drill hole HDD024.
- Incl. 7m @ 3.1% copper and 0.6g/t gold from 426m.
- 86m @ 0.6% copper and 0.1g/t gold from 413m in drill hole HDD024W1.
- Incl. 13m @ 1.3% copper and 0.3% gold from 419m.
Rex Minerals Managing Director Mr Steve Olsen said the drilling program was designed to test the extent of the steep east-dipping, high-grade structures within Hillside and to test the interpreted position of the main gravity anomaly at greater depths.
"What we have learned so far is that the faults which dip steeply to the east have an important influence on the location and extent of the high grade copper mineralisation."
"This will be important for further work on Hillside and in our assessment of other regional targets along the Pine Point Fault Zone, he said."
"The recent results at Parara just 12 kilometres to the north also add to our understanding of the controls on copper mineralisation in the region ".
Hillside Drilling Results
The results from HDD024 and daughter wedges (W1 and W2) have extended the copper mineralisation previously intersected in drill hole HDD018 within the Zanoni Fault Zone.
Drill holes HDD024W1 and HDD024W2 have also identified extensions to the copper mineralisation within the Dart Fault Zone (Figure 1). This deeper drilling has intersected a high grade zone of copper mineralisation between 609 and 660 metres as tabulated above, and has confirmed the interpretation of increasing copper grade with depth in the Dart Zone.
In addition, Drill hole HDD024W1 intersected massive haematite (iron mineral) and bornite (copper mineral), which have not been previously observed higher up in the Dart Fault Zone. The massive haematite is considered to be the cause of the gravity anomaly. However, it is interpreted that drill hole HDD024W1 has only intersected the margins of this "haematite/bornite" zone at this stage, as the amount of haematite observed is considered to be too low to be the primary cause of the gravity anomaly in this particular location.
Current Activities
Rex is continuing the current drilling program at Hillside to define the extent of the copper mineralisation. The current drill holes are located 100m to the south of HDD018 and HDD024 on section 74300N, and these are aimed at testing for the continuation of the high grade copper mineralisation on the steeply east dipping structures within both the Zanoni and Dart Fault Zones. At the completion of these drill holes, the drill rig will move a further 1km to the south to follow up the shallow copper mineralisation intersected in drill hole HDD022 which intersected 12m @ 2% copper from 56m.
For more information about Rex Minerals and its projects please visit our website
http://www.rexminerals.com.au
Contact
Steven Olsen
Managing Director
or
Janet Mason
Company Secretary
Tel: +61-3-5337-4000
Email: info@rexminerals.com.au
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