Minera Andes, MAI on Alberta Message Board

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Gold/Mining/Energy : Minera Andes, MAI on Alberta

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To: the eagle who wrote (66)	4/21/1998 2:04:00 PM
From: EmpiricalR	Read Replies (2) of 340

MAI's immediate problem is to determine the three dimensional configuration and orientation of the three mineralized zones that were discovered in the reconnaisance drilling and to follow along these features in the subsurface to zones of greater thickness and higher grade. My best guess is that MAI has found a large (horizontal scale) system of semi-vertical veins which have formed in a system of late-stage faulting. In order to develop impressive reserves, these veins will have to be painstakingly drilled off along strike and down dip. This will take time and there will be frequent disappointments as zones pinch out (temporarily)or are faulted out -- at the same time as the core "plumbing" system of the mineralizing fluids is delineated (providing intercepts of substantial thickness and spectacular grade). The point is: there will be no instant giant ore reserves, it will have to be built one drillhole at a time. Excitement should eventually build as the extent and "density" of the vein system becomes better and better defined. Wrt: Motherload. MAI has on several occasions drawn attention to a Round Mountain analogy for this prospect. At Round Mountain, a horizontal formation that was susceptible to silicification acted as a cap or dam to the mineralizing fluids and a very large "bulk tonnage" deposit formed beneath it (instead of in vertical veins). MAI apparently has reason to believe that there is potential for horizontal/sedimentary/dam structures in this geological environment and will clearly be hunting for this type of deposit going forward (probably with a deep geophysical prospecting technique - IP). A bulk tonnage deposit with Saavedra West-type grade could probably be described as a motherload (even though that is not a technical term!).

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