The hints are that the ultrabasic / ultramafic bands which could host the sulphide mineralisation are stacked like a deck of cards recumbent on each other, (See the style of the orebody as attached a few days ago by Gold Bunny on the Spotted Quoll discussion), and because it appears that we are dealing with strong structural deformation in this system, there is a possibility that some of these mineralised bands have been folded, and faulted and brought close to surface where the bulk of the ore has been denuded and eroded by topographic activity over time, with most of the eroded going to the palaeo seas, leaving behind remnants of the originally deposits.
Similarly, structural and tectonic activity could have digested and displaced the original ore into smaller remobilised bodies rendering them thin and uneconomic.
On the positive side, the reverse could have happened as well, where smaller proximal orebodies could have remobilised and coalesced in the process of tectonism to produce larger pockets resulting in the formation of large ore bodies. During this process of remobilisation the plastic or fluid bodies could have also shot out plumes in the form of dykes from a main deeper source of Ultramafics with associated sulphides accumulating and consolidating along the keels or footwalls of these dykes.
(Definition of the dyke in case you are not familiar with them, is an intrusion of magma from a deep plastic source, -in this case of ultramafic composition- through a fracture or a crack in the overlying consolidated body of rock that it intrudes. These dykes are steeply inclined or subvertical. If they are flat lying or slightly inclined, they are referred to as Sills - You can liken them to toothpaste squeezed out of its tube)
Mineralisation that is segregated from the intrusive -Sulphides in this case- being heavier than the host ultramafic, will accumulate and settle on either side of a vertical dyke when pressures associated with the intrusive are released. Or, they sink to the base of a reclined intrusive. Nova is a similar example except, I think that in its case, the Ultramafic is believed to have been a flow rather than an intrusive, which settled in a spoon like depression with the bulk of the sulphides accumulating in the keel or bottom part of the spoon that is to say in the footwall of the ultramafic.
The most recent intersections as described on the bottom half of page two of today's release may be reflecting what I very crudely described above. i.e. the thin intersections reflect mineralisation squeezed out from a source of ultramafics which are at depth or to the side. These could be viewed as the branches of a system if you like. Now, If the system has been overturned after emplacement and subjected to erosion, then; these branches would be the remnants of what was once there. However. Cratons are very stable bodies and would have to undergo tremendous upheaval to expose such structures to erosion. I'm not a structural expert and not too familiar with the structural geology of that region.
What I suggested in the paragraph of the post you referred to pow4ade was in the a very remote possibility that could explain the absence of thick sulphide intersections to date. Possibly too fanciful and I hope I have not confused you. I think in retrospect I should have left this for a discussion with my peers.
Just ignore it because it is really very early days in the scheme of this exploration programme.
I wish you well with your investment and Cheers,
helmenesh
SGQ Price at posting:
20.5¢ Sentiment: Hold Disclosure: Held
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