I have crunched a few numbers and scenarios on the potential...

I have crunched a few numbers and scenarios on the potential iron-ore at gondwana's new north eastern pilbara tenement on the coast about 180km east of existing port and shipping facilities at port hedland. I have assumed the tenement dimensions from the media release below and the regional gravity and magnetic data in fig 1 of the release.
The media release suggests to me nearly the whole site could have iron-ore so I have developed three scenarios based on the site being 25km long by between 3km and 6km wide ( have used av' of 4.5km) and a 50m depth. The scenarios are for a low, medium and high iron-ore inferred resource but they will depend on a higher level of geological knowledge and confidence than is currently available from just the release and the nearby iron ore tenements.

Low scenario
Only a third of the site and depth has Fe
Say a 1.5km width x8.333km length of strike and depth of 16m
Is 199,992,000m3 or 199.9m/t ( assuming a cubic metre weighs a metric tonne ?) (a cubic metre of water weighs a tonne)

Medium scenario
Approx' half the site and depth
Say 2.5km width x 15km length of strike and depth of 20m
Is 750,000,000 or 750m/t

High or extreme scenario
Say 25km strike length x4.5km width x 40m depth
4500,000,000 or 4.5bn m/t

I think both the medium and high scenarios are not possible and the low scenario is probably the best case we cold hope for in moving from rock chip samples, to shallow widely spaced driling and an inferred resource.

Have a re-read of the media release below and let me know what you think.
Even the low scenario would be an outstanding discovery if the initial exploration has some potential good results.
I don't know what the adjacent shoreline is like at walla downs but the tenement is coastal and is there potential for a harbour and new shipping port for the pilbara at wallal downs, but it's something else to investigate ?

Ceers Fatstocks



MEDIA RELEASE
19 November 2007
Acquisition of Wallal Downs Prospect
Gondwana Resources Acquires Significant Exploration Target in Pilbara Gondwana Resources Limited has agreed to purchase, subject to certain conditions, the Wallal Downs prospect located 180km east of Port Hedland along
the coast and coincides with the historic Wallal Downs Pastoral Lease in the Marble Bar District. The prospect is covered by exploration licence application E45/3139.
Access and infrastructure are considered excellent with the coastal highway located immediately south of the license area.
Regional gravity and magnetic data indicates a significant anomaly extending ENE
for 25 km of strike length within the application area (refer to attached figure 1).
This anomaly may coincide with either a strongly magnetic mafic intrusion similar to the host units at Radio Hill (Fox Resources) with the potential to host nickel, copper and platinum group elements or at Balla Balla (Aurox Resources), with the potential for iron, vanadium and titanium.
Importantly, anomalism may also relate to a near-surface extension of the Nimingarra banded iron formation, host to haematite iron ore mineralisation at Pardoo (Atlas Iron) and Yarrie/Goldsworthy (BHP). The ground is contiguous with
Brumby Resources iron targets to the immediate WSW.
The coastal area is covered by sediments of the Canning Basin and has never been effectively explored before. It is anticipated that detailed ground geophysics in the first half of 2008 will provide drill targets in the second half. GDA is determined to fast-track its work in this area in compliance with state regulations.
The vendor of the Wallal Downs Prospect is Ausprey Resources Pty Ltd, a private Australian exploration company. The acquisition agreement with Ausprey is subject to certain conditions, including compliance with the provisions of the Mining Act.
The purchase consideration is 3,000,000 ordinary shares in Gondwana. Ausprey will retain a 1.25% gross Net Smelter Royalty.
For further information, please contact Warren Beckwith on phone (08) 9388 9961 or send an email to [email protected]
Warren Beckwith
Director
GDA/ASX 279 � EL126