ROF/NOT Conceptual Geological Model from Latest NR..
The first observation I would make from these NR’s is the number of “disclaimers”, that were included in these NRs, no doubt imposed by the “regulators” which no doubt helped to delay assay results, such as the statement blow copied from the actual NOT NR::
“Notwithstanding that these results appear to confirm management's conceptual theories, there can be no guarantee of actual results, which may differ from management's expectations.”
The NOT Conceptual Geology model for the Ring of Fire outlined in said NR, is that of a late highly magnetic altramafic peridotite intrusion , also known herein after known as Ring of Fire Intrusion or RIF, emplaced/intruded all along the margins of the older Granodiorite pluton , (footwall) in between the Sachigo Greenstone rocks (hangindwall), which has caused the Greenstone rocks to ‘dome”. This RIF is magnetically distinct, which allowed it to be traced uninterrupted for tens of Kms along the Granodiorite margins. . It appears that a series of conduits cutting across and through the granodiorite have acted as feeders to the RFI.”..NOT NR :
“Key points of the Ring of Fire conceptual model are as follows;- A mantle derived, highly magnetic ultramafic "peridotite" intrusion ("the Ring of Fire Intrusion" or "RFI") has been emplaced along the margin of a regional scale granodiorite pluton which had been intruded into and caused a doming of the host Sachigo greenstone belt rocks. The RFI is thus situated between the granodiorite on one hand (footwall) and the surrounding Sachigo Greenstone Belt rocks (hangingwall) on the other. The RFI is magnetically distinct allowing it to be traced more or less uninterrupted, for tens of kilometers along the granodiorite margin. It appears that a series of conduits cutting across and through the granodiorite have acted as feeders to the RFI.”
As mentioned here numerous times, globally these ultramafic intrusions similar to the RIF hosts several types, including Layered chromite deposits-- Nickel-Copper deposits-- Platinum Group Metals ("PGM") deposits
“On a world-wide basis ultramafic intrusions, similar to the RFI, are known to host several types of deposits such as:-- Layered chromite deposits-- Nickel-Copper deposits-- Platinum Group Metals ("PGM") deposits.”
A careful reading of the excerpt from NOT NR below, will demonstrate that E1, and E2 although associated with the RIF are actually some way away from the RIF itself, and are related to the conduits feeder systems. However, from drilling area results, the Chromite layered mineralization is confined strictly to the RIF itself, while the Ni Cu appears at this stage to be related to the conduit feeders, located in pools or traps within the feeders. Based on observations from similar intrusives globally there is no reason, at least conceptually, why Ni-Cu or PGM deposits could not be hosted by the RFI itself. The exploration potential in this regard remains to be tested.”
It seems clear then this “feeder system” tends to go northward in the direction of the Granodiorite from the RIF, (see Geology map of McFaulds, which then may have important implications for Exploration. The E1 deposit may be considered as a trap or chamber within these conduits feeders, and E2 may be considered the mouth portion of said conduits feeders, within a Shear Zone…
“Recent drilling within the Ring of Fire area confirms that both PGM-rich Ni-Cu deposits (Eagle One and possibly Eagle Two) and now chromite occurrences are associated with the RFI and its related conduit feeder system. As would be expected under the conceptual model, on-going drilling by Noront and published results from other junior companies working in the area, suggest that the layered chromite mineralization is likely to be confined strictly to the RFI, while the platinum rich Ni-Cu sulphide mineralization appears, at least at this stage of exploration, to be related to the conduit feeders, localized in pools or traps. Based on observations from similar intrusives globally there is no reason, at least conceptually, why Ni-Cu or PGM deposits could not be hosted by the RFI itself. The exploration potential in this regard remains to be tested.”“Using the conceptual model, the Eagle One deposit would be interpreted to occur within a conduit feeder, at some distance from the RFI. “
“The Eagle Two discovery on the other hand is interpreted under the conceptual model as occurring within the "throat or mouth" portion of the conduit where it empties into the RFI. The mineralization yielded by Noront's results at this point in the system consists of mineralized zones that contain numerous thin (10 cm to 120 cm) Ni-Cu bearing sulphide layers occupying a shear zone that collectively amass to 10's of meters thick "fingers" that "feather" out into the RFI. Individual semi-massive to massive sulphide lenses within the SHS zone attain core lengths of up to 7 meters.”
The following NR excerpt clearly states that the Ni Cu mineralization moves North West away from the Chromites and the RIF, and possibly into a trap or chamber within that feeder conduit zone NW, part of the original feeder system similar to E1..And agin mention of the potential for NU Cu and Chromites within the RIF…
The most recent drilling (holes NOT-08-1G32, 1G35, 1G38, 1G39 and 1G40) at Eagle Two suggests that the zone of finger-style mineralization is coalescing and increasing in overall thickness as it is drill tested along strike to the northwest, presumable into a conduit that is part of the original feeder system. The sulphide mineralization is also interpreted as moving away from the Chromite mineralization further suggesting that the Eagle 2 mineralizing environment is moving further away from the RFI and into a possible feeder conduit environment similar to that observed at Eagle One.
Noront management feels that the drill results obtained to date at Eagle Two are consistent with the conceptual model it has developed to date, which would suggest that there is potential for the discovery of another Eagle One - type deposit, as the Eagle Two mineralization is traced northwestward into a possible feeder conduit. The potential for both Chromite and Ni-Cu deposits within the RFI itself remains virtually untested.
CHROMITE_ Dr. Mungall’s Report
As you see, that early petrographic analysis that the content of Chromium CR2O3 is 51.9 weight percent %, which is the highest % ever found in Canada…The standard deviation % equates to about 36% CR with the CR/Fe average of about 1.72 very close to the average of 2….You will also note that Dr. Mungall estimates the size of E2 Chromite at 500mx150m, and further petrographic work is underway to establish consistency of these grades throughout the deposit…It seems clear that these grades are economical, and they want to make certain that these grades extend throughout the deposit…
In conclusion, it seems to me that they have a much better handle of the discoveries of both NI Cu and Chromite, although very little was mentioned on PGEs, which does not surprise me in the least…PGES are an exceedingly rare and elusive and found within very complex Geological structures…However we have at McFaulds all the necessary Geological ingredients for discoveries if High grades PGEs deposits especially within the RIF…It will only be a matter of time and drilling before we do…I had mentioned on numerous occasions that one never knows what will come up once a drill core comes up at McFaulds…There appears to be numerous and various types of mineralizations to be found, just a recent example of SPQ’s…One of their assays in one anomaly returned E2 like features of Chromite +PGEs + Ni-Cu…However the second Anomaly drilled, returned a totally different type of mineralization in that although it started off in a peridotite, the mineralization was found in a very altered, brecciated Chloritized and sillicious felsic (tuff) metavolcanic…I believe that may be a first for a MMS deposit…Of course in VMS at McFaulds mineralization has been found in Felsics…So very exiting anytime drills are at work at McFaulds…..SO this new evidence speaks very well for continuing to find ore deposits at McFaulds, since the RIF extends the entire length of McFaulds…
Dr. Mungall :---Chromitite seams have been intersected in several diamond drill holes into the AT2 target area southwest of the Eagle One magmatic massive sulphide deposit. The chromitite seams occur as steeply dipping stratiform layers with down dip extent of at least 500 metres and strike length of at least 150 metres. The chromitites vary from narrow seams, centimetres thick to massive beds of chromite orthocumulate greater than 20 metres in true thickness. Massive chromitite at AT2 consists of 60 to 90% euhedral chromite grains up to 1 mm in size surrounded by a matrix of talc, chlorite, serpentine, and stichtite, a hydrated magnesium chromium carbonate mineral. The host rock is metadunite and metaperidotite that has been altered to talc and carbonate and is relatively undeformed close to the chromitites. Preliminary petrographic work indicates that the chromite is generally fresh and unaltered. Wavelength dispersive electron microprobe analysis of 90 individual chromite grains in samples from holes NOT-08-1G3 (134 m) and NOT-08-1G20 (247 m) show that the compositions of the chromite grains show little variability around an average value of 51.9 weight percent Cr2O3 (standard deviation of 0.98 weight percent), equivalent to 35.5 weight percent Cr, with Cr/Fe weight ratios between 1.6 and 1.8 and averaging 1.72. Further petrographic and electron microprobe work is underway to establish the consistency of these grades throughout the deposit. Whole-rock assay data is pending for all of the chromitite intersected to date."
ALL as usual IMCO
JD*
