Post by
diabase1 on Oct 11, 2023 7:13am
Milligan Recap
In recapping the Milligan property, I will use a report by W.G. Wahl (42A09NE0033/42A09NE0033) and a report of Golden Chalice (20000004493/20006640). In doing so, it will essentially make it easier for me to finalize a somewhat inclusive background, on what has transpired within the property. Also, it may assist RT Minerals on what has to be done, in any future exploration program. I will on occasion refer to another assessment report, that may assist in my preamble. However, for the most part, one only has to switch back and forth between the two above reports, to see what I am referring to.
The former is a report written in 1963 by W. G. Wahl, which summarizes the work carried out for H.H. Wright. It basically covers the earlier geological and geophysical parameters within the Milligan property. The Golden Chalice report, on the other hand, is a more recent update on the property (2009/2010), which will complete the picture.
As mentioned in a previous post, the property was covered by an airborne EM and magnetic survey with a frequency domain EM system. It would not have the same depth of penetration capabilities as a time domain system would. As it turned out, there were no EM anomalies intercepted within the property.
W.G. Wahl used the magnetic data to interpret the geology. He has peridotite trending along the western boundary of the claim block, and a diabase dyke along the eastern boundary. Running through the middle of the block, he has indicated dioritic dykes. Again, he has interpreted these rocks, based on the magnetic total field data. I am not aware if he had access to the vertical gradient data, which would have made it easier for him to interpret the 'inferred' geology. I'm not even sure if vertical gradient maps were even available back in 1963!! He has also interpreted granitic rocks just off the east claim boundary, which no doubt was based on magnetic lows.
I can see where he would have interpreted the north-northeast fault from the magnetic data. However, he also has 2 east-west faults interpreted on the map, that I do not see in the magnetics. Towards the extreme south end of the property, there is a short NW/SE trending magnetic high that may be of interest, because of its location with respect to a gold soil anomaly.
"Airborne electromagnetic and ground induced potential (IP) survey returned negative results". I don't have access to the IP profiles, so I can't make an assessment of the data. However, I'm not surprised that the results were negative, considering how high the conductivity of the overlying overburden is. The OGS airborne EM results were also negative over the property.
Referring to the Colloidal Gold Map at the back of Wahl's report, he has outlined Anomaly 1, an east-west gold trend within the northern region of the property. He has also indicated that this trend is of "prime importance". However, it should be pointed out that there were only 2 gold samples involved with this trend, both being located outside the west and east claim boundaries. Obviously, more samples should have been taken between these 2 samples, within the property. He is right in pointing out the proximity and the strike direction of this gold trend with the Eastford Lake gold discovery to the west.
More soil samples should be taken near the south end of the property, where Wahl has outlined Anomaly 3, where 5 gold grains have been found.