Robust updates drilling results from Romang gold project
Wednesday, September 22 2010 - 02:33 AM WIB
Managing Director Gary Lewis comments: ?Technical work on Romang Island has reached a crucial stage with the completion of the initial 3D lP-Resistivity survey only days away. While we would normally await assay results prior to releasing drilling information, in the case of hole LWDO93 at Batu Hitam, we have made an exception. This hole was the first to be guided by our recent resistivity results and it has intersected visually impressive massive sulphide mineralisation. This result is a particularly gratifying, strong confirmation of the efficacy of our current exploration methods and the approach of our technical team. It lends further legitimacy to the potential of the extensive geophysical anomalies being produced by the IP-resistivity survey.
?The high grade assay results from LWDO85 are also very encouraging as this hole expands the known mineralisation at Batu Hitam beneath the limestone cover and is also consistent with the new geophysical model. The gold and silver bearing massive sulphides are the highest grade yet to be assayed in our 2-year long exploration drilling campaign.
?The IP-Resistivity model is still being compiled and interpreted, but the interim results announced here are significant. In particular the large anomaly to the south of Batu Hitam, as well as more subtle anomalies associated with the strong geological and geochemical indicators at Batu Perak (to the west of Batu Hitam) and Batu Hitam North, indicates plenty of scope to continue the achievement of positive drilling results.
"The lP-resistivity work undertaken to date, has already demonstrated its effectiveness and it is now clear that a number of the anomalies identified by the initial survey are not closed off. As a result, planning is underway for an extension of the survey, which will commence immediately upon the completion of the Romang North IP-resistivity grid."
?Robust now has four diamond drill rigs operating on Romang with a further two drills purchased and on their way to the Island. These machines are dedicated to our stated dual aims of exploration discovery and the delivery of a maiden JORC mineral resource from the Lakuwahi project.?
Drilling
Robust is also pleased to announce recently received assay results from drilling on the Batu Hitam prospect on Romang Island. Hole LWDO85 was drilled under limestone cover in the northeast corner of the Batu Hitam prospect (see Figure 2 over leaf). This hole was mineralised for its entire 188m length, averaging over 1% combined zinc (Zn) + lead (Pb) + copper (Cu). Within this broad zone, LWDO85 intersected a number of richer zones of mineralisation including the highest grade base metals (21.1% combined Pb + Zn + Cu) drilled at Lakuwahi over economically significant widths. Notably, the base metals mineralisation also contained elevated gold (1.27 g/t) and silver (58 g/t).
A summary of the results from hole LWDO85 is found below:
? 188m at 1.1% combined Cu + Pb + Zn from surface including:
o 7m at 6.1% combined base metals from 22 metres; and
o 13m at 2.1% combined base metals from 78 metres; and
o 3m at 21.1% combined base metals (Pb 12.3% + Zn 7.7% + Cu 1.1%) with 1.27 g/t Au and 58 g/t Ag from I 33m
Drill hole LWDO93 was the first hole to be drilled using specific guidance from the new 3D IP - Resistivity modelling. Although assays are yet to be received from the laboratory, geological logging of the hole has registered a six-metre zone of massive sulphide mineralisation. Visual inspection of the core shows coarse-grained sulphide mineralisation rich in zinc, lead and copper. This massive suiphide zone is part of a more extensive zone of mineralisation in this hole.
Geophysics
Approximately 80% of the originally planned IP-Resistivity field survey has now been completed and interim modelling results are available. The survey will be completed before the end of September 2010 and the equipment and crews will be relocated to Romang North.
Interpretation of the modelling is continuing in-house with the help of the Company?s consultant geophysicists. The resistivity component of the survey has already shown its usefulness in the positive results from hole LWDO93 discussed above. All of the current drilling is now being guided by the resistivity model results, in addition to the other normal inputs. (end of edited release)