GBM Resources
Geophysics surveys begin at GBM Resources Tiger copper-gold prospect
GBM Resources (ASX: GBZ) has commenced a Sub-Audio Magnetic (SAM) geophysical survey at its Tiger copper gold prospect in Queensland to identify target zones.
SAM will also survey the possible extension to Tiger, a strongly developed ironstone breccia zone south west of the Tiger zone, which is persistent over at least 3 km, said GBM managing director Peter Thompson.
The Induced Polarisation (IP) geophysical survey has been completed with field data received to date confirming that the Tiger Prospect, covering a 1.5 km strike, shows a strong geophysical response at depth.
The geophysical response observed in data from the IP survey so far is consistent with the response expected from the target style and type of mineralisation being sought (disseminated to semi massive copper sulphide mineralisation) at the Tiger prospect.
Tiger is located on the southern extension of a structural trend which is a major fault system being part of the Rocklands Fault system. Tiger is considered a prospective host to similar mineralisation.
Geophysical surveys (both SAM and IP) have been designed to provide additional information to assist in targeting diamond drilling to test the zone at depth.
Chargeability models show a consistent highly chargeable response along the Tiger fault zone. Chargeability in this situation is likely to reflect the intensity of disseminated sulphide mineralisation.
Chargeability increases significantly below 100 m from surface.
Drilling indicated that weathering only extended to around 30 m from surface, and generally only tested the mineralised zone to around 40 m from surface.
This response may indicate significant increase in intensity of sulphide mineralisation at this depth.
Resistivity data shows a consistent zone of low resistivity (more conductive rock) associated with the chargeability high. This is also consistent with elevated sulphide content.
Other GBM Resources news
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16/02/10 GBM Resources has deep drill gold project underway in Victorian goldfields
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15/02/10 GBM Resources to drill a one kilometre hole at Malmsbury Gold Project
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29/12/09 GBM Resources completes drill program at Tiger Prospects
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05/11/09 GBM Resources confirms deep target zone at Tiger Prospect, raises $2.5m
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09/09/09 GBM Resources receives encouragement with copper shows in Mt. Isa
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02/03/09 GBM Resources finds major gold, copper zone potential at Brightlands
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