No disrespect intended but using that method is life looking at...

No disrespect intended but using that method is life looking at Uluru with a torch on a cloudy night. You need to model the geology with your method. Modelling Tres Estados is like modelling iron ore. It's a huge continuous mass kilometres wide and in strike length.

From the other thread:

The possibility that bedrock mineralisation continues for many kilometres (potential for mineralisation to extend for a total of 20km or more) is supported by :-

• Soil sample anomalies up to 5km along strike an 2km wide;
• Numerous extensive workings up to 800 x 200m in size extending for kilometres;
• Numerous very high grade rock chip bulk samples;
• Aeromag anomalies extending for a total of about 30km.

Also, waiting for the JORC is a surefire way to miss out IMO, and Brent Cook's opinion....