Perth, Oct 17, 2008 AEST (ABN Newswire) - Pilbara explorer, Warwick Resources Limited (ASX:WRK) today announced further high grade gold results from RC drilling at its 100% owned Jimblebar gold project near Newman.
Highlights:
- High grade gold intersections from RC drilling at Jimblebar, including:
1m @ 41.7g/t Au from 36m and 2m @ 4.1g/t Au from 47m (WRKRC162) from Sunny South
1m @ 11.5g/t Au from 17m (WRKRC166) from Pilliwinkle
- Large new gold target "Pilliwinkle South" identified near Sunny South - to be drilled this year
- Independent review of Jimblebar gold project identifies fertile intrusive rocks, similar to those linked to the formation of several of the largest gold deposits in the Yilgarn Craton
In addition, the Company has identified a large new gold target named "Piliwinkle South".
The Jimblebar gold project includes the 2km strike length of the historic Jimblebar goldfield and potential strike extensions up to 8km. It is located next to the Company's 100% owned Jimblebar Range iron ore project, where drilling is currently in progress.
Warwick Resources Managing Director Bruce McQuitty said the results had expanded the gold potential at Jimblebar.
"These results have confirmed and extended the high grade gold mineralisation previously identified at Sunny South and Pilliwinkle.
Furthermore, we have outlined an extensive new gold target at Pilliwinkle South".
"We are further encouraged by the identification of host rocks at Jimblebar, which are similar to those associated with some of the largest gold deposits in the Yilgarn region of Western Australia."
"We are fortunate to own a quality gold project located next to our iron ore projects. Given the promising results received to date, the Company's strategy is to focus its drilling on both the iron ore and gold projects", Mr McQuitty said.
The Company has scheduled further drilling at Jimblebar for the current quarter.
RC Drilling Results
The Company completed 13 RC holes (1,084 metres) focusing on the Sunny South and Pilliwinkle prospects in the southern half of the goldfield, where high grade gold mineralisation has been previously identified at shallow depths (see Table 2 for drill hole details and Figure 2 for drill hole locations).
Eight of the holes (WRKRC154-162) targeted extensions to high grade shoots at Sunny South prospect, while a further four holes (WRKRC163-166) provided a first pass test of the Piliwinkle prospect.
Significant intersections at Sunny South included 1m @ 41.7g/t Au from 36m depth and 2m @ 4.07g/t Au from 47m depth in drill hole WRKRC162, as detailed in Table 1. This follows previous high grade gold results obtained from RC drilling by the Company, including:
1m @ 144g/t Au within 8m @ 20.4g/t Au from 34m depth (WRKRC6),
1m @ 17.1g/t Au from 26m depth (WRKRC51), and
1m @ 11.8g/t Au and 10m @ 4.0g/t Au from 18m and 22m depth respectively (WRKRC52).
An additional high grade intersection from the Pilliwinkle prospect of 1m @ 11.5g/t Au from 17m depth in WRKRC166 is 80m to the northeast of a previous intersection of 1m @ 48.0g/t Au (JRC003) from 23m depth.
Large New Gold Targets Identified
Following a review of 251 aircore drill holes (2,690m) completed at Jimblebar since October 2007, the Company has identified two large coherent gold anomalies located outside of previously known gold prospects. These anomalies, which constitute the Pilliwinkle South and Assam prospects, represent promising new drill targets.
The Pilliwinkle South anomaly, defined using a cut-off of 25ppb Au, is approximately 600m long by 100m wide and has a peak value of 1,410ppb Au. The gold anomaly coincides with elevated sulphur values and a linear induced polarisation (IP) chargeability anomaly from the Gradient Array IP geophysical survey undertaken earlier this year. The Assam anomaly, also defined using a 25ppb Au cut-off, has dimensions of 250m x 150m, contains a peak value of 137ppb Au and is open to the south.
Independent Review Identifies Controls to Gold Mineralisation
The Company commissioned consulting geologist Dr John Beeson of Jigsaw Geoscience to undertake a review of the controls to gold mineralisation at Jimblebar. Dr Beeson has extensive experience in Archeaean gold systems, gained through senior roles with Pancontinental Ltd, Goldfields Ltd, Placer Dome (Australia) Pty Ltd and through Jigsaw's international consultancy. Dr Beeson considers the gold mineralisation at Jimblebar to be associated with a dacitic to andesitic porphyry intrusive. He describes the porphyry as "reminiscent of 'mafic-series' granitoids thought to be intimately associated with gold mineralisation in the Yilgarn Craton. The dacitic porphyries probably played a role in both gold and molybdenum mineralisation (at Jimblebar)". Dr Beeson identifies the Jimblebar gold camp as a smaller analogue of some large Archaean gold deposits with demonstrated porphyry affinities, for example New Celebration, Granny Smith and Sunrise Dam.
Multiple bodies of dacitic porphyry have been intersected in drilling at Sunny South. These are strongly sulphidic, usually containing between 2% and 10% pyrite. The Company's geologists have modelled the gold as occurring in a series of stacked lodes within the porphyry.
A single diamond drill hole WRKDD003 was recently completed at Sunny South. The drill hole intersected multiple dacitic porphyry bodies ranging from 1m to 30m thick. The thickest of these is intensely pyritic and quartz veined. This porphyry correlates with known gold mineralisation at Sunny South. Assay results are pending.
The association of the dacitic porphyry intrusives with the gold mineralisation indicates the potential for the Jimblebar project to contain gold deposits of a larger scale, while the high sulphide content of the porphyries means that they can be effectively explored for using geophysical surveying techniques such as IP.
----------------------------------------------------Table 1: Jimblebar Gold RC Drilling Results----------------------------------------------------Hole_id From To Interval Au Prospect (m) (m) (m) g/t----------------------------------------------------WRKRC154 61 62 1 1.02 Sunny SouthWRKRC155 69 71 2 1.90 Sunny South and 76 77 1 1.14 Sunny South and 106 107 1 1.77 Sunny SouthWRKRC156 52 53 1 3.60 Sunny SouthWRKRC157 35 36 1 1.03 Sunny SouthWRKRC158 NSR Sunny SouthWRKRC159 30 38 8 2.06 Sunny South including 37 38 1 8.71 Sunny SouthWRKRC160 NSR Sunny SouthWRKRC161 24 25 1 2.54 Sunny SouthWRKRC162 36 37 1 41.70 Sunny South and 47 49 2 4.07 Sunny SouthWRKRC163 31 32 1 1.46 PilliwinkleWRKRC164 NSR PilliwinkleWRKRC165 63 65 2 2.07 PilliwinkleWRKRC166 17 18 1 11.50 Pilliwinkle----------------------------------------------------
Note: 1m riffle split samples were assayed for gold by 40g Fire Assay with ICP MS finish. All samples assaying greater than 0.2g/t Au were reassayed by 1kg Screen Fire Assay. Where this is the case, the Screen Fire Assay results have been used in the calculation of the intersections. All intersections have been calculated using a lower cut-off of 1.0g/t Au. NSR = no significant result. Based on current interpretation of the geometry of lodes, true widths are considered to be between 80% and 100% of down-hole widths.
----------------------------------------------------Table 2: RC Drill Hole Collar Details----------------------------------------------------Coordinates are MGA Zone 51 (GDA) projectionHole_ID Easting Northing RL Depth Dip Azi (m)----------------------------------------------------WRKRC154 213633.15 7400516.17 559.42 120 -59 310WRKRC155 213656.25 7400542.27 559.25 120 -54 310WRKRC156 213646.10 7400570.04 560.89 94 -59 310WRKRC157 213638.62 7400601.31 561.28 75 -60 310WRKRC158 213627.75 7400584.58 562.13 70 -60 310WRKRC159 213612.31 7400558.91 562.69 75 -56 310WRKRC160 213598.24 7400467.42 557.81 100 -59 310WRKRC161 213571.36 7400505.71 560.59 80 -60 310WRKRC162 213589.06 7400525.96 561.72 75 -59 310WRKRC163 213523.48 7400263.63 562.75 65 -56.5 310WRKRC164 213522.08 7400201.09 563.66 65 -58 310WRKRC165 213556.39 7400120.29 560.38 100 -57.5 310WRKRC166 213572.12 7400156.88 558.07 45 -59 310----------------------------------------------------
Competent Persons Statement
The information in this report to which this statement is attached that relates to Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Mr Bruce McQuitty, who is a Member of the Australian Institute of Geoscientists. Mr McQuitty is a full-time employee of the Company and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity they are undertaking to qualify as a Competent Person as defined in the 2004 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Mr McQuitty consents to the inclusion in this report of the matters based on his information in the form and context in which it appears.
Contact
Bruce McQuitty
Warwick Resources Limited
Tel: +61-8-9481-8181 / Mobile: +61-409-929-121
Email: bmcquitty@warwickresources.com.au
Website: www.warwickresources.com.au
| ||
|
