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The project currently has mineral resources of:

Indicated: 17.7 million tonnes at 1.2 g/t, containing 0.7 million ounces (“Moz”) of gold.
Inferred: 39.8 million tonnes at 1.0 g/t, containing 1.3 Moz of gold.

The resource has grown by a factor of 7 in the past three years and upside potential remains. Exploration is ongoing and new mineralised areas identified in 2018 are yet to be drill tested.

Drilling significant intervals can be viewed here.

As at September 17, 2018

 Region Classification


(g/t Au)

Metal Content
(Moz Au)

Esperança South Indicated 11.8 1.4 0.5
Inferred 21.7 1.2 0.8
Esperança East Indicated - - -
Inferred 11.8 0.9 0.4
Esperança Center Indicated 5.9 0.9 0.2
Inferred 6.3 0.7 0.1
Project Total Indicated 17.7 1.2 0.7
Inferred 39.8 1.0 1.3

Numbers have been rounded to reflect the precision of Inferred and Indicated mineral resource estimates.

The reporting cutoff of 0.3g/t gold corresponds to the marginal cutoff for an open pit with operating cost (processing + G&A) of $US 10/t, metallurgical recovery of 98% and a gold price of $US 1,200/oz.  These are mineral resources and not reserves and as such do not have demonstrated economic viability.

The metal content estimates reflect gold in situ, and do not include factors such as external dilution, mining losses and process recovery losses.

TriStar is not aware of any environmental, permitting, legal, title, taxation, socio-economic, marketing or political factors that might materially affect these mineral resource estimates. 

Further details available in the September 17th 2018 press release entitled “35% INCREASE IN RESOURCES AT CASTELO DE SONHOS AS PRELIMINARY ECONOMIC ASSESSMENT BEGINS”

Details are reported in press release dated Sept 17, 2018 titled 35% Increase In Resources At Castelo De Sonhos As Preliminary Economic Assessment Begins’