Doing some Due Dill - Prior to todays ann "...The best...

Doing some Due Dill -



Prior to todays ann

"...The best (selective) assay at Bouba on the Gaoual licence was 73.99% Al2O3 with 1.88% SiO2 using an XRF analyser. A total of 21 samples averaged 56.6% Al2O3 with2.25% SiO2 ..."

Todays Announcement

"...Assaying of the samples were initially completed by a portable XRF with typical grades encountered by the drilling
to date as below:
 12m @ 61.3% Al2O3 5.3% SiO2 4.9% Fe2O3
 10m @ 62.7% Al2O3 4.5% SiO2 8.1% Fe2O3
 8m @ 62.3% Al2O3 8.1% SiO2 4.8 %Fe2O3
 12m @ 57.5% Al2O3 6.7% SiO2 7.2% Fe2O3

The silica content of the Bouba Plateau is slightly higher than seen in the surrounding in-situ bauxites of the region and this could be due to an aeolian fraction that has incorporated itself into the conglomerate that can trap these sands, during and post deposition...."

"...It should be noted that the silica content could predominantly be present as quartz (as noted in logging), and as such the reactive silica (RSi) could still be very low due to the mineralogy of the silica rich minerals, ensuring a high Total Available Alumina (TAA) content for this rare Conglomerate Bauxite..".


Looks to me like they are being ultra cautious with todays ann regarding silica? . I think the actual grade of silica will turn out (once lab assays arrive) to be similar to the surface grades prev mentioned hence the caveat in blue. They had no need to put in this caveat IMO but they did ...why?. I reckon because they strongly suspect it will come back lower.

I should also point out that handheld XRF are notoriously inaccurate due to the fact that they can only analyse an area the size of a pinhead each time . So if you move it a few millimeters to the side you get a different reading. Hence there are ball park estimates only and confirmation can only be made by Lab Assays.

Note: With Silica its not purely the % but the ratio of the Silica to the alumina grade. High grade Alumina is anything above 45% AI203. Lindian is reporting 57.5-62.7 % which is extremely high grade at Bouba.


Resource Potential Size

A roughie (back of the fag packet) calc on the resource size gives:-

Bouba Plateau

1. Estimated mineralisation 5km2.
2. Drilled mineralisation so far 5km2?
3. Depth of mineralisation reported between 5-12m across the deposit
4. Specific Gravity of Insitu Bauxite typically 2 -2.5

So at Bouba a uniform avg 8.5m Avg mineralised Depth thickness gives :-

5000m x 1000m x 8.5m x 2SG = 85 million tonnes (106mt)

If you assume the Specific Gravity is 2.5 instead of 2.0 then tonnage numbers are increased to RED above


Mamaya Plateau

1. Estimated mineralisation 10km2 (of which 6km2 has been drilled)
2. Drilled mineralisation so far 6km2
3. Depth of mineralisation At least 10-15m across the deposit
4. Specific Gravity of Insitu Bauxite typically 2 -2.5

So at Mamaya a uniform 10m mineralised Depth thickness gives :-

6000m x 1000m x 10m * 2SG = 120 million tonnes (150mt)

At a uniform 15m Depth
6000m x 1000m x 15m * 2SG = 180 million tonnes(225mt)

For the full 10km2 assuming similar results

10,000m x 1000m x 10m * 2SG = 200 million tonnes(250mt)

10,000m x 1000m x 15m * 2SG = 300 million tonnes(375mt)

If you assume the Specific Gravity is 2.5 instead of 2.0 then numbers are increased to RED above


So in summary Bouba and Mamaya combined should give a tonnage of between205mt (85mt+120mt) in a lower case scenario to a 481mt (106mt+375mt) in a upper case scenario.


So this prima facie appears to be a significantly large and high grade resource with some of it being world class assuming low silica in Lab Assays. Company is currently valued at $13m Mcap. Company will need to get Govt approval for next round of Drilling to progress to phase 2 . I expect that the current wide space drill will give them an inferred Jorc and they will need to infill to get upgrade to more valuable indicated/Measured status.



I should note that lab assays will be some time as they have not left the site yet and will need to be shipped to Perth or S.Africa by ASX requirement. Once at Lab expect 2-3 weeks turnaround.

Ok thats my quickie brain dump ...