Case Twp.RT Minerals has four separate claim groups in Case Township, which have the potential for economic cesium/lithium mineralization within their Properties. We know that Power Metals has a cesium/lithium discovery nearby, so the chances of RT Minerals coming up with a similar discovery on one of their claim groups is excellent.
As I've mentioned in previous posts, I believe that this eastern part of the Case Batholith is the top of the batholith (this is my interpretation), based on the magnetic and gravity data covering the Case Batholith. Also, it has been indicated that the rocks near the very top of the Case Batholith is basically granodiorite, while the remaining intrusive to the west is quartz monzonite. In the area of Power Metals discovery area, tonalite has also been mentioned. The difference between the granodiorite and tonalite is essentially based on different feldspars.
In the Power Metals area, they mentioned in their Investor Presentation (page 22), that there are 14 Domes within their claim blocks. It is not clear how they came to discover these laccoliths. Was it through magnetics, topographic maps, LIDAR surveys, or prospecting? Perhaps it was the latter.
A laccolith is a mass of igneous rock, typically lens-shaped, that has been intruded between rock strata causing uplift in the shape of a dome. Drilling by Power Metals indicates that the Main spodumene pegmatite dyke is hosted by a dome-shaped laccolith rather than batholith.
With respect to the magnetics for the Power Metal's claim blocks, there is a weak circular anomaly of about 15 nanoTeslas on the north side of where they are drilling on the Main Dyke (Dome 8). As well, there is a weak anomaly of the same intensity located north of the Northeast Dyke (Dome 9). To the west, there is a very weak anomaly of approximately 5 nanoTeslas, although this time, it is located south of the West Joe Dyke (Dome 10). In the case of the Main pegmatite dyke, the magnetic anomaly is interpreted to be related to metasedimentary rocks (see Investor Presentation, page 15). It has been suggested in other literature that these metasedimentary rocks should be used as a pathfinder to find the pegmatites. Once the metasedimentary rocks (magnetic anomalies) have been located, then it is believed that the pegmatite dykes should be in close contact with these metasediments. And it doesn't seem to matter where the pegmatites will be located, whether it be north, south, east or west of the magnetic anomaly, depending on the geometry of metasedimentary feature.
In referring to Map 81225, these magnetic anomalies are small, circular magnetic features in the immediate area of Power Metal's discovery area. However, potential targeted areas (metasediments) could also be long, linear magnetic trends as well. They don't have to be strong magnetic intensity anomalies either!!
For the rest of the Domes in Power Metal's property, a few comments follows:
Domes 1-6 (in Case Twp) are targets that are in extremely low intensity magnetic background areas. The targets are located in clusters of dot shaped anomalies that are probably between 1-5 nanoTeslas. These Domes would probably not have been selected as targets based on their extremely low intensity magnetic features. It is suggested that Power Metals may have staked their claim blocks on the basis of the mapped outcrops that you will see on the Ontario Geological Survey Map P2243.
Dome 7 (in Case Twp) is one that RT Minerals will have to share with Power Metals and Fred Stan Kiernicki. The target is an east-west magnetic trend about 3 km long, and of weak to moderate magnetic intensity. The latter 2 parties have the central portion of the magnetic trend, with RTM having both ends. There may be a north-south fault at the western end (Map 82826).
Domes 8, 9 and 10 are the Main Dyke, Northeast Dyke and the West Joe Dyke respectively. One can refer to Power Metals' website for details on each of them. In the meantime, according to Map P2243, the Northeast Dyke pegmatite is hosted in quartz monzonite, the Main Dyke pegmatite is hosted in both quartz monzonite and granodiorite and the West Joe Dyke pegmatite is hosted in granodiorite. With more work being done in these areas, other rock types may exist.
The other 4 Domes that Power Metals have, are called Circle Lake Dome, Kenning Lake Dome, Joe Creek Dome and Abbotsford Dome (Investor Presentation, page 22).