There were a couple more photos I didn't post yesterday from the South Australia Undercover PDF authored by Dr Tim Baker
SA undercover IOCG.pdf
Page 28 has one image of high sulphide core without no comment about exactly what it is. The word Skarn probably applies to this and may be quite significant in the context of yesterday's post.
While I don't think the mineralisation intersected at Havieron is IOCG it doesn't preclude that it may represent the skarn phase of such mineralisation. IMO the intrusives in the Paterson are interacting with the sediments and structures to produce a wide range of deposits. Whether they are IOCG, Skarns, replacement, porphyry or something unique to the area is something that further studies will reveal.
NCM's tungsten deposit O'Callaghans is a bona fide Skarn containing some 5% of the worlds known tungsten resource. It was part of the model used for Rimfire drilling last year. It sits between Havieron and Telfer. Corker??
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On the topic of Nearology here are two images neither of which have much to give spatial reference to what has and has not been discovered in the respective areas.
The first comes from Page 9 of Baker's PDF. I have photo shopped out the known deposits. Can you work out where to even start?
Where is Olympic Dam (10Bt 25+sq km), Carrapateena, BHP's Oak Dam?
This second is a magnetic image of north west WA with a ~200 sq Km box representing the area of the South Australian example. There is a huge difference in magnetic patterns which probably are a function of very different geological environments though I am not certain to what extent different processing of magnetic data may be involved.
Telfer is not readily visible. Winu and Havieron can be seen; as can lot of other pimples which are all of significant size given the scale of this image. Nifty - I haven't looked in detail.
At this scale it is difficult to see BHP's Oak dam discovery (+-1Km so not too surprising). Probably can pick out Magnum though that's a bit of an ask as is Calibre.
Not even certain why I post these images.
Exploration works in mysterious ways. These regional images to the local scale adding detail along the way.
Nearology works on the concept that structures either continue onto a competitors ground or the style of mineralisation is repeated throughout the province. As with financial advice past experience is no guarantee of future success. Might help. Hopefully does for AZY.
Have to Run....hope SP does soon as well DYOR GLTAH
(20min delay)