Milligan 3In referring to McLaren Resource's website, it is noted that their Kerrs Gold Zone is located near the western contact of the fold of the large magnetic feature (Map 81254). This location is quite different from what RT Minerals has been inferring, where the gold may be on their property. That said, it appears that gold may be located on both sides of the wide, linear magnetic trend, that skirts by the western side of the RT Minerals property.
In 1999, the OGS released Map P.3392, a regional geological compilation map that covered the Milligan property. It shows the large fold in the ultramafic intrusive rocks in Kerrs Twp, with the trend heading southeast into Milligan Twp. A more detailed report on the Kerrs Gold Zone is given by Sage Resources that was authored by Peter Hubacheck (Assessment File 20000002686/20004174). It's too detailed for this post, but it's a must read for any geologist looking to gain a better understanding of the type of exploration model to be compared with RT Mineral's Milligan property.
Golden Chalice carried out magnetic, VLF and IP surveys over the northwestern half of RT Minerals' property in 2009/2010. Referring to Assessment File (20000005333/20007605), it is clear that the Total Field Magnetics is showing the wide band of magnetic low on the eastern side of the property. Towards the northern half of this area, the magnetic intensity is quite low. You can also see the same lower intensity near the northwest corner of the property. Is there a rock type change within this part of the property? One area that caught my eye was the deep north-south magnetic low between Lines 600E and 700E. This could be a very interesting target to investigate. It is located within the strong NW-SE trending magnetic high that is thought to be associated with peridotite. Could it be a feldspar porphyry? There are no VLF anomalies in any parts of this block, including over this isolated magnetic low. This is not surprising, considering the conductive nature and the thickness of the overlying overburden.
Another area that caught my eye was the cross-cutting north-south trending IP conductor that is located within the central magnetic low corridor, Assessment File (20000004493/20006640), in the middle of the property. It is also located very near a NNE/SSW fault, that was interpreted by W.G. Wahl (42A09NE0033/42A09NE0033). It is suggested however, that the IP data be re-interpreted, and at the same time, either a 2D or a 3D image of the data be produced, in order to more clearly visualize the conductive trends, especially the north-south IP conductor.
In referring to Assessment File (20000005774/20008201), the following was stated in the report, regarding the IP results:
"The ground in this region appears to be extremely conductive. Input currents averaged 2A with dipole number one only 25 meters away registering a VP in the 300mV range and dipole 10 250 meters away averaging 100mV. These provided very flat decay curves showing chargeability anomalies to range between 1 and 2 mV/V".
To me, these are really low readings. If you look at the IP Metal Factor profiles, very few of the lines are showing any depth penetration. It is suggested that the electrodes may not have been making a very good connection, and that the current was being lost in the overlying conductive overburden (refer to the Calculated Resistivity on the IP profiles). The Calculated Resistivity gets as low as 89 ohm-m near the overburden horizon, which is quite conductive. That being said, it is my suggestion that before any further drilling takes place, there should be more confirmation that, in fact, a target is really a good target. Perhaps a few lines of soil sampling, such as MMI, including an analysis for mercury, which potentially could reveal either a halo around a deposit, or a fault structure. It may also be prudent to get another serious opinion and interpretation on the IP data as well. Just my thoughts!!