joya_dorado
Jr. Member
Well one thing has led to another, as is often the case, and I have accumulated some mineral claims in Canada in an area known for diamonds and the kimberlites from whence they come. So my question is this: Short of hiring a major geophysical survey outfit like Fugro to do an aerial magnetic, electromagnetic or gravimetric survey to the tune of $100,000+, what sort of alternatives can any of you fine folk recommend? The magnetic data we have already has narrowed the total acreage of roughly 18,000 acres down to 3 or 4 anomolies covering maybe 500 acres. The overburden is anywhere from 200 to 300 feet thick. We know of course that the diamonds themselves are non magnetic so cannot be directly detected. What we are looking for are kimberlitic intrusions which may be non magnetic to strongly magnetic and everything in between though most do have greater magnetic signature than the country rock which is Cretaceous limestone. The size of the kimberlites may range from a couple hundred feet across to thousands of feet across. Like I said we have narrowed it down to a few magnetically anomolous areas so are there any portable ground based sensory gizmos we might use to penetrate a few hundred feet thru the glacial gravel and sand overburden? I know this is a subject textbooks have been written about but I thought I would toss it out there just for the heck of it.
