Re: Drill targets
in response to
by
posted on
Nov 27, 2011 12:19PM
Keep in mind, the opinions on this site are for the most part speculation and are not necessarily the opinions of the company WITHOUT PREJUDICE
grumpy,
The red dot of the needle like representation of drill holes, is the collar of the hole, where the drill enters the ground from. There are black lines emanating from the red dots representing the actual drill hole direction. If you notice the black lines, they mostly tend to pierce the anomalies, and the end of the black line would be situated in the middle or so of the anomaly at an average depth of 400 m or so. If you look at the direction of each black line of a drill hole, you will notice that most point approx to the west. The reason for this is that most of the veins/structures being targeted , have an easterly dip.You almost always drill across the dip hitting the vein at an angle of anywhere from 35 - 80 degrees approx,trying to get the longest intercept of the vein as you can as you pierce it.The shallowest angle you can get in respect to the vein, the better. The longer the intercept through the vein , the better, it gives you more info over a longer distance. In our case, most of the holes will be drilled at a 65 degrees dip or angle.
Sometimes holes are drilled downdip, or with the same dip as the vein, trying to stay in the vein as much as they can. This is only done when a company wants to test the consistency and extent of a mineralized vein/structure to depth. To drill this way always would not provide the maximum info out of a hole whereas it limits your chances of hitting other parallel veins or structures in the area.This is more commonly done on wide veins ,breccia,and dykes that may be considered mineable at a later date.
In some of these targets, there are most likely multiple veinlets emanating from a main vein, with these going through the anomaly everywhere. These events are common on the property, and it is possible for a whole anomaly to have cracks/fractures in it that filled with gold bearing quartz. Sometimes when you find structures like this, they tend to have a high grade of gold because the gold had more favourable conditions to form and deposit at the tips of these veinlets/fractures. So, if drilling a target like this, your chances are very good of hitting gold anywhere in these types of anomalies, if present.There is evidence of this kind of activity at the surface, but no guaratee that it will be found at depth, although I expect it will be.