Investigator Resources (ASX: IVR) continues to intersect high grade silver at its Paris Silver Project in South Australia with infill drilling returning a peak intersection of 7 metres at 1,570 grams per tonne silver from 79 metres.
Notably, the drilling further improves the confidence the company has in understanding the structural controls and geometries of the higher grade silver mineralisation in the central area of the deposit.
This will play a key role in the pending maiden mineral resource estimate expected in the September quarter of 2013.
Other notable results from infill drilling between Lines 5 and 9 include:
- 4 metres at 252g/t silver from 35 metres and 2 metres at 566g/t silver from 113 metres; and
- 18.2 metres at 68g/t silver from 7.8 metres, 4.2 metres at 181g/t silver from 72.8 metres and 2 metres at 496g/t silver from 78 metres.
Current diamond drilling
Investigator managing director John Anderson said that infill drilling was ongoing with three diamond drill rigs operating on double shift.
"Two diamond drill rigs replaced the reverse-circulation percussion drill rig to improve drill sample recovery and to achieve our timetable for a maiden Inferred Mineral Resource in the September quarter of 2013," he added.
Diamond drilling is now concentrating on the mid-section of the deposit, generally defined between lines 5 and 9, to provide the in-fill drilling required.
The orthogonal drilling of holes at right angles to the previous orientation is also continuing as part of the program to better understand the geology and hence increase confidence. This is also required for the pending mineral resource estimate, expected September quarter of 2013.
The actual number of diamond holes drilled will depend on the data received as each hole is drilled and evaluated.
"Investigator is also planning to undertake initial drill testing of three large satellite targets around Paris during the September quarter. These have strong silver and copper potential that will be evaluated in parallel with Paris to assess priorities for the wider Peterlumbo field," Anderson said.
Once final approval is granted for access, which is expected in July, aircore or reverse circulation drilling will commence on the large satellite silver-in-soil targets at Alexander and Hector as well as the conceptual Peterlumbo porphyry target.
This will enable evaluation of these priority targets in parallel with the Paris resource estimate so strategic priorities can be set for the December quarter.
Alexander covers a 2.5 kilometre by 400 metre area and was defined by the company's soil geochemical approach.
It is about three times larger in area and more coherent in amplitude than the Paris soil signature and contains a very well defined plus 500ppb silver-in-soil core of 1,000m length and up to 200m width. This compares with a much smaller 500ppb core at Paris of about 200m length.
Hector is also larger in area and has similar or higher silver values than the Paris target signature at the same stage of exploration.
Investigator is also continuing technical studies including a review of comparable silver operations and a high-level, desk-top review to identify potential operating routes and capital requirements, infrastructure requirements, metallurgical processing, access factors, and State and Federal compliances.
Preliminary metallurgical test work to determine the metallurgical characteristics of the mineralisation will commence following the appointment of metallurgical consultants.
The first phase of metallurgical testing will utilise current drill samples to commence ore-type characterisation ahead of a full scale metallurgical study.
With infill drilling at the Paris Silver Project continuing to return high grade silver intersections, Investigator Resources is well on its way towards defining the key maiden mineral resource estimate in the September 2013 quarter.
Drilling of the large satellite targets, which are both larger in area and contain higher silver values than the Paris target signature at the same stage of exploration, has the potential to discover even more prospective silver fields.
Investigator remains well funded to continue its exploration programs with $12.5 million in cash as of 31 March 2012.
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