Good to get a juicy zone in the middle of the inferred high grade zone at Shanac. The first of a infill to give indicated for the high grade core. Worth doing some wedges?
Sorted my version of the historical assay database to give intervals of +1.8g/t Au only. These holes are plotted with red circles and rough drill traces (light blue). Two holes plot well outside the area drilled by 149. Most of the others will give the inferred high grade core zone. Haven't looked at the 3D aspect - don't have skills, tools or data necessary. One hole (16086) was drilled vertically. For many of these holes the Au is the dominant part of the Au eq assay shown. Hole 149 is even more Au dominant in the Au skarn.
========================== If you meant what the geology situation is this simplified map may be the basis for understanding what has gone on. Some complex structures move the Jurassic/Triassic rocks out of general sequence. They are the base with carbonatites above them.
The brown layer on the top is quite late and covers the carbonate sequence. Also present in the west and blocks out geochemistry vs the rest of the area [Geophysics to be tried there on top of the ZTEM already done?]
Some 25 MYa the Intrusive rocks intruded and locally formed thin dykes which have brought in hot hydrothermal fluids that have reacted with the carbonate units (occasionally producing skarns+- goodies) as well as altering the overlying andesites.
The large intrusives at depth may even be related to porphyry mineralisation. Medenovac is considered a possible site for this though likely to be too deep IMO.
The mineral systems will have some form of zoning related to depth and host lithologies. This appears to be the case with zones 1 2 and 3 in today's hole. Upper level 1 is termed epithermal while the lower two zones are skarns with differing mineral contents.
Stream of consciousness above which is effectively a first draft that would need much fine tuning. Google: Skarns. They are complex beasts that are the realm of specialists - which I am not.
======================== Imagine what 90m at 4 g/t Au might have done if it was a Yandal. Probably kept STK above water on a generally rough day on the market.
I expect variations of these assay results to keep coming from Rogozna for most of the planned drilling. Some surprises for previously undrilled targets will be welcome. I prefer Gradina over Medenovac but will take both.
HOLE ID
intersections
metres
g/t au
gm
1
149
main
89.7
4
358.8
2
FR-TO
incl
24.1
10.5
253.05
3
244.5-334.2
0
4
0
5
Residual
65.6
1.6
105.75
The residual grade of 1.6 g/t over 65.6m is good enough to be medium UG grade in its own right.
