Drh65,
Out of the assays asdd002, 004, 005, 006, 007, 007, 009, 010, 011, 012
No mineralisation was found surface down.
Asdd006, best shallow, 5-7m @ 1.26%.
Asdd007, best shallow, 9-12.8m @ 1.42%
Asdd008, best shallow, 37.75-38m @ 1.2%
Asdd010, best shallow, 90.56-90.96m @ 2.1%
Asdd011, best shallow, 86.75-87.7m @ 1.16%
There the intercepts were mineral encountered with decent grade from the surface.
Potential reasons.
1. They did not drill into surface outcropping, but drilled maybe 20-50m off them.
You would only drill outcrops straight down, if you knew your system went straight down with no plunge
You might get 5-10m down and out of the system.
The cross sections show that if drilled straight down out of the system quickly.
2. As assays start deeper, that leads to the possibility, what was intercepted is not the same pegmatite that were sampled on surface.
3. If faults in area, maybe surface sheered off and they are only on surface relating to chips, not the drilling.
4. Another is if mineralisation mainly confined to the hanging wall, drills could have been a few metres or greater from it.
We know decent grades exist at varying depths.
Small widths, but grade is there.
I think what was intercepted is the end of shoots, we see this in gold, there called leeders.
Most times they connect at depth to the main ore bodies.
Lithium forms at depth, not shallow, so that theory carries weight.
If we look at azure, the bulk of the widest hits is pretty deep.
I am not concerned about surface being average knowing lithium is at depth and possible reasons mentioned above for the disconnect.
You might get a few nice shoots going to surface in a system, but the wider bulker stuff is deep generally with lithium.
I hope I've explained why surface good, and drilling not.
I had a reef that was sheered via a fault, we followed that reef in a drive, hit the fault, other side of fault no reef.
It was picked up 50m deeper other side. So faults can really move a system.
Raiden has two sheer zones in one of those holes, so a fault is involved.
At the moment just not enough data, for example a drill just 100m next to 023 may yield a very different result if sheering and faulting close.
The interesting thing with 025, is no soils and one basalt layer, versus many basalt layers at 023
Basalt travelled in channels, flowed, till it cooled and set.
I think 025 is, closer to the mark than 023 based on basalt change alone.
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