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Gold/Mining/Energy : ECHARTERS -- Ignore unavailable to you. Want to Upgrade?

To: grusum who wrote (3568)	6/26/2011 5:51:38 PM
From: E. Charters	Respond to of 3744

I don't think so. Better tech creates more jobs because of the greed factor. The limiting factor is how much money it takes to prove anomalies. Investment availability. High price gold, many new economic opportunities, same old starvation of capital because no one has any effing money who has any brains. The single best technology for finding gold is to stratigraphically drill on strike with known gold deposits. The best geofizz/chem tech they have ever found with the best hit rate is biogeochem for gold. Amazing hit rate. No so much with copper or silver, although you would think it would have wild success there. The next best anomaly technique is downhole geofizz. It finds more mines than any other geophysical technique. The worst of them all is Input (time domain). It maps faults and iron formation to a T. Trouble with massive sulfides. Turair and Turam has an excellent record of finding small sulfide veins nuder hundreds of feet of rock. It's record at finding massive sulfides is disappointing. Ditto AFMAG and CSAMT. CSAMT can find faults by the hour if you know how to interpret, which is dicey. IP is valuable with gold as it finds the accessory sulfides which are disseminated. It is not positive for gold however, and there are lots of misses. One of the best overall is EM-16 VLF as it anomalizes over every single sulfide body ever mined. It is just not used as a tool to spot drill holes often as it is thought to be too productive of spurious anomalies, which is not really so if you know how to interpret. One of the best was always Self Potential, which looks for earth currents in a sulfide body. It can interpret to rule out saline water and graphite. Nothing much in geofizz ever found that many massive sulfide bodies. They should in theory conduct, but most don't. what probably conducts if at all is the oxide layer at the regolith. The sulfides themselves are probably inert to electrical techniques. Not that pyrite is that good a conductor but I have seen 500 feet wide of massive Py not conduct at all. I have seen 25% Pyrrhotite produce no detectable anomaly. A promising comer was co-incident coil techniques being developed at the University of Alberta. Have not heard much out of this one since its inception a few years back. EC<:-}