Sunday, January 17, 2010

Bedard Dyke - strike length of potentially 705 ft vertical by 250 - 300 ft horizontal (and counting)

We know that the 705 ft strike length is minimum and could be extended to 1000 ft or more (with the next phase of drilling).

I've been trying to figure out how much space we have from the wall of the open pit to the hwy. I've come to the conclusion (based largely on a diagram in the Lamaque tech rpt, put together after the pit operation stopped) that it's about 250 - 300 ft. However, keep in mind that scales from diagrams, maps, etc. may not always be precise. It may not be the same as measuring in person.

Anyway, (assuming the scale a fairly reasonable) I've come to the conclusion what we have already identified a strike length of at least 705 ft by 250 - 300 ft. It likely means we can mine whatever gold is located within that space before we even hit the hwy and the city of Val d'Or (and whatever gold is under the hwy and the city).

Also, there are no limitations if the Bedard Dyke extents well past the hwy. We own a decent chunk of the underground mining rights well past the hwy (under the city).

Take a look at the map I linked below. The yellow line represents our property border. Take a look at where Sigma is located relative to the left side of the yellow border line. The big red Sigma dot is where the Sigma o/p is located. After 250 - 300 ft, and after the hwy, everything left of that is under the city of Val d'Or.

As a result, it means we have quite a bit of mining flexibility (if we choose to exercise) for as long as the Bedard Dyke continues and also for any other mineralization that may continue beyond that point.

http://www.centurymining.com/operations/pdf/exploration-quebec-sigma.pdf

4 comments:

production05 said...

The Bedard Dyke might be a challenging structure to drill. It's clear that it dips very sharply to the south. I have no way of knowing but I can imagine it being a challenge to locate the correct drill angles all the time and still accomplish the specific objective of the drill hole.

It seems like the structure dips on average around 80 degrees to the south. This may have contributed to the 3 drill holes that were categorized as 'negligible'. I suppose we should also keep this in mind while waiting for future drill results from the Bedard Dyke. It might take a bit more time (than normal drill programs) to study and figure out the correct angles. I don't know enough about this to know for sure though.

I also think that the 80 degree dip is why we crossed hwy 117 instead to crossing Boulevard Tetrault. Hwy 117 tends to bend a little but generally runs east west. Boulevard runs north south. The Bedard Dyke (at the west end of the pit) points in the direction of the Boulevard Tetrault (although probably not too far from the intersection of the hwy and the boulevard). We would have crossed Boulevard Tetrault if there was no dip in the structure.

I think the dip does have a benefit though. I think it means we hit more gold prior to reaching the hwy - you know, a dipping/curving/bending structure is longer than a structure that flows in a straight line.

production05 said...

"Dyke widths vary from approximately 6 feet thick on the western end to 30 feet thick on the eastern end near the Sigma Pit."

This perhaps suggests that the thickness is greater nearer to the pit. Although the thickness was great on the current drill results also, there weren't many that posted 30 feet thickness (as is suggested to be near the pit). This leads me to believe that the huge thickness we hit with previous holes were not too from the Sigma pit area, namely:

*drill hole 18755: 80 ft (24 m) @ 12.8 g/t Au

*drill hole 18803: 216 ft (64 m) @ 14.9 g/t Au

It remains to be seen, but perhaps all of this is suggesting that they might be able to get to high thickness areas at early to middle stages of mining the Bedard Dyke.

production05 said...

"Mineralization is contained both":

1) "in flats within the steeply south dipping dyke"

2) "and within flats hosted by volcanic rocks adjacent to the dyke"

It seems to me like we are getting mineralization from not just the dyke itself, but from flats located adjacent to the dyke. We are also getting a bonus from the various high grade zones going down the dyke.

And, I am also curious about all the dips that occurs off the dyke. Do those dips represent extra arms/extensions (south dipping faults?) of the dyke every time it dips out? I have no idea, but I'm kinda getting that impression that it might be a possibility. If so, would that give us extra mineralization? Maybe this is the same as what was described above (adjacent flats), but they seem different because the dips are coming directly from the dyke itself.

They should show us a preliminary 3D like version of the structure once they get the current data into Vulcan. It would give us a better appreciate of what we have here.

"The Bedard Dyke, which strikes SW and dips steeply to the south"

"the best method for determining the grade of the dyke will be to drill it down dip and along strike. This method of drilling will ensure that all flats within the dyke are intersected by the drill holes."

rick said...

why we dont have a 3 d view of the infrastructure of the lamaque project all others mine got that kind of thing to show where is the mineral and the plan of the mine undergroud in 3d