To: Carole Olkowski who wrote (645 ) 5/27/1998 12:44:00 PM From: Jesse Read Replies (1) | Respond to of 2514
Hi Carole. The News posted today by Jimsy is about the same as that of yesterday. There was a brief discussion here yesterday, but now that I think about it, not that much! First, 'kimberlite' is known to be a host-rock for diamonds (a +75milyr old sub-volcano structure). Potentially economic diamondiferous kimberlites have already been discovered in the region Marum is actively exploring, by Ashton Mining of Canada (ACA). I too am no expert, but a few of the lines from the News that stand out to me:Approximately one third of the targets coincide with slightly elevated topographic mounds. We have heard of little erosion occurring on the Ashton kimberlite pipes, meaning the surrounding material may be relatively softer; this gives way to the Kim-pipes actually being more preserved, representing surface protrusions, described as 'mounds.' The MMU elevated mounds that sync with loud magnetic anomalies, as referred to in Marum's news yesterday, are right up that same alley! Significantly, Marum's targets are under very little of that prohibitive "overburden" and thus are much more easily explored, and most importantly if it came to that, mined.Preliminary analysis indicates that these targets occur at or near surface and have geological diameters greater than 200 metres, but not likely greater than 800 metres. Near surface means easily accessed! - These dimensions fall in line with regional kimberlite 'pipes' and if prove to be pipes, offer excellent potential for large deposit tonnage (though it's way to early to speculate). The lack of overburden is highly significant (as I keep harping). I have heard that more than 30m of overburden can be prohibitive, especially if the material is water-logged (as in what other drillers were pulling up further east, where the OB is much deeper).Approximately 30 anomalies are compelling because of their shape and, especially, their power which render them obvious even on unprocessed preliminary total field intensity maps. These kimberlite-like targets are jumping off the page. Again encouraging because,The new, more detailed results define several new sets of point target patterns that are not related to cultural objects. And they aren't 'magnetic sands' in the overburden either:Moreover, these target patterns, or clusters, although some are linear patterns over 8km long, are not related to glacial till deposits since till is very thin throughout the Chinchaga area. Neither are they related to stream sediment deposits since most of the patterns cut across existing drainage networks. Such targets and clusters of targets (kimberlites are typically emplaced in clusters) are calling out to be drilled. Cheers, -j :> *italics represent quotes from the NR