Ann: Further Impressive Drill Results from Oposura, page-5

Takes awhile to crunch the numbers as you may imagine. Here is a first pass with usual disclaimers about accuracy and DYOR.

This plot is meter*combined Zn+Pb (e.g. ODPH-144 12.25m (down hole intersection) of 16.28% combined Zn+Pb = 12.25*16.28 =~199M%). These are colour coded and have a number beside them which represents the approximate mid point of the intersection.



In a simple way it is possible to see areas of higher or lower M% areas which can be roughly contoured.

Not easy to do a very good job of contouring but it does show broad trends which were already starting to be defined with assay results to the end of March. These contours ignore the 3rd dimension which will be important for the economics of mining.

That's where the mid point RL's for the intersections come in handy. By comparing nearby holes it is possible to see how close they are to the same level, stacked or if there may be some structure present.

Glen Jardine at the April GM talked in terms of Rolls (don't think he meant folds but could be) and some faulting. The sections presented today show what is probably a preliminary AZS interpretation of these rolls. These or faults make it tricky to "just join the dots" on sections without further geological input.
Location of sections


A few points about sections.
Scale different for these two sections - take into account when comparing them.
Not certain what the term unconformity means in this context - for some reason the word fault is avoided.
Mineralisation appears thicker on the crest of the "rolls" than in the troughs. Combine this with possible fault related trends on the NW-SE direction and there may be some structural controls to the mineralisation.



Using the numbers and letters on this image as reference points.
1 mineralisation seems to thin or disappear completely to the SW.
2 Hole 113 and (to a lesser extent) 125 opened up a south east trend (T) to a zone of mineralisation.
3 Holes 131 (4.55m @ 3.35% Zn+Pb) and 130 ([email protected]%) add some 20-50 m of low grade open pittable mineralisation
4 There appears to be a NW extension to the mineralisation in this area that has been commented on before but is now somewhat better defined. Probably closed off to the SW and thinning/lower grade to the NE.
Trends T - - these NW/SE zones of elevated M% Zn/Pb seem to extend away from tunnel D - ?structurally controlled.

Further comments
Why did Tunnel D stop where it did? What was seen/drilled? Certainly seems to mark a major transition in mineralisation to thin/low or no grade.

Stacked zones of mineralisation are shown in the AZS sections. Some lenses are in the Candelaria Formation and Revancha Rhyolite. This was mentioned at the GM where the rhyolite hosted zones, in particular, could represent a vector towards either deeper mineralisation or a deep seated intrusive that could be genetically related to near surface base metal zones.

Drill density of AZS phase 1 drilling varies from around 25x25m spacing near the portal to Tunnel D and possible Open Pit Zones to 50x50 or more to the west,NW. Phase 2 infill drilling will probably be needed to raise these western zones from inferred to indicated or better. Such drilling would also better define any structural complexities.

Can historical drilling can be used for the PEA? Jorc requirements probably preclude some but it would seem to be a waste of money if some cannot be utilised.

Will play around with the sections over the next few days.

Looking promising for Opasura and AZS.

GLTAH