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Helicopter EM Anomalies Defined at Lockeridge Manganese Prospect, Earaheedy Basin
Zinc Co Australia Limited's latest ASX Release 2nd March 2010

Outcropping high grade manganese mineralisation responds to Helicopter EM.
2 March 2010
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Re-issue of today's ASX Release 17th February 2010

New discovery of high grade stratabound manganese oxide in the Earaheedy Basin.
17 February 2010
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29 January 2010
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Zinc Co Australia Limited November 2009, Presentation to Shareholders at the Annual General Meeting held on Thursday 26th November, 2009.
27 November 2009
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ASX Release 27th November 2009

Results of Meeting at the Zinc Co Australia Limited Annual General Meeting held on Thursday 26th November, 2009.
27 November 2009

Cardinals

The Cardinals zinc gossan is located approximately 130 kilometres south-south-east of Port Hedland in Western Australia, and covers potential strike extensions to the host rocks of CBH Resources Ltd's Panorama-Sulphur Springs base metals project, which is slated for commencement of construction of an open pit development in 2007.  Zinc Co can earn up to 75% interest in the Cardinals project, with Giralia retaining nickel exploration rights.

Location and Geology of the Cardinals Project

Location and Geology of the Cardinals Project
The regional geology of the area is dominated by a north-east trending, steeply dipping, folded sequence of Archaean basic and felsic rocks, and sediments of the Sulphur Springs Group which form part of the belt surrounding the Strelley Dome.  The cherts and felsic volcanic rocks within this belt are correlated with the Kangaroo Caves Formation and host the Cardinals gossan and several similar gossans, including Sulphur Springs.
Geology of the Cardinals Project

Geology of the Cardinals Project

At the Cardinals prospect ferruginous gossans with malachite and azurite occur as lenses in unaltered agglomerate rhyolite tuff and basic schists adjacent to a narrow chert horizon. The prospective acid volcanic units vary in thickness up to 200 metres near Cardinals gossan, where coarse agglomerate probably indicates proximity to a volcanic centre.  To the south the prospective horizon is masked by Tertiary gravel outwash, while to the north the upper part of the acid tuff horizon is dissected by a serpentinised pyroxenite intrusion.

Better results from six percussion holes and three subsequent angled diamond drill holes completed between 1976 and 1982 are tabulated below:

Percussion Drilling 1978/79

Hole  N  E
 From
 To
 Interval
 Zn%
 Pb%
 Cu%
 Ag ppm
 Au ppm
 XM 1
 11272
 9825
 9
 14
 5m
 3.4
 0.27
 0.13
 8.6
 
 XM4
 11218
 9815
 44
 54
 10m
 5.9
 0.4
 0.94
 36.3
 
 
 
 incl.
 45
 47
 2m
 13.2
 0.9
 1.4
 64
 0.88

Diamond Drilling 1981

 Hole

 N

 E

 From

 To

 Interval

 Zn%

 Pb%

 Cu%

 Ag ppm

 Au ppm

 XD 66

 11100

 9750

 142.25

 143.6

 135m

 6.51

 0.56

 0.99

 30

 

 

 

 incl.

 142.7

 143.6

 0.9m

 9.37

 0.8

 1.15

 36

 0.13

 XD 67

 11000

 9750

 197.6

 200.55

 2.95m

 2.52

 0.19

 0.94

 32

 

 

 

 incl.

 198.9

 200.55

 1.65m

 3.96

 

 1.38

 44

 

 XD 68

 11200

 9750

 78.85

 80.85

 2.0m

 3.83

 0.24

 0.67

 28

 

 

 

 incl.

 79.4

 79.85

 0.55m

 10.8

 0.77

 0.9

 55

 0.23

  * collar position of XD 68 uncertain

Section showing Zinc Mineralisation and Geological Interpretation of the Cardinals Project

Section showing Zinc Mineralisation and Geological Interpretation of the Cardinals Project

Rock samples up to 22% Zn, 7.0% Cu, 8.0% Pb, 115 g/t Au and 0.96 g/t Au; 10.7% Zn, 10.4% Cu; and 9.1% Zn, 3.2% Cu and 2.4% Pb are reported from the Cardinals gossan.  Another gossan outcrop, the Aloha gossan, in the south-eastern part of the tenement returned up to 16% Zn and 32% Cu from rock sampling.

Reinterpretation of the previous drilling shows that the massive sulphides at Cardinals are probably located in the east limb and keel of a shallowly south-plunging synform.  Judging by the extent of rodding lineations in surface outcrops, the massive sulphide body is likely to be an elongate cigar-shaped plunging shoot.  The single hole tests on sections 11000N (XD 67) and 11100N (XD 66) are unlikely to have satisfactorily tested a body of this shape. Reinterpretation of 1979  SIROTEM geophysical data highlights strong EM anomalies extending south from the Cardinals gossan  with depth to top of the source estimated at no greater than 40 metres suggesting that the 3 holes drilled by in 1981 were probably targeted too deep to test the observed conductors. Mapped shallow plunging lineations suggest that the conductive body, which is less than 40 metres below surface could represent a south plunging, cigar-shaped massive sulphide pod.

Further drilling is planned at the Cardinals gossan, particularly to the south and immediately beneath hole XM 4, and along the EM conductor axis.  The Aloha gossan also warrants assessment in detail.