Regional Exploration Targets

1 – Pedra Branca East Extension

Located immediately to the east of the Pedra Branca Deposit, along the extension of the same magnetic anomaly, which characterises this deposit and 20km to the southeast of the world class Sossego Cu/Au Mine, the target also lies within exploration permit DNPM No 850.318/00.

Geology is comprised of sheared and hydrothermally altered granites, gneisses, and diorites with abundant pegmatite veins (Xingu Complex and Plaqué Granite).

IOCG type hydrothermal alteration of the same type seen in the Pedra Branca Cu/Au Deposit have been identified in this area, including distal Albite-Scapolite alteration and the proximal K-Feldspar-Amphibole-Magnetite alteration which is associated with Chalcopyrite (pyrite, pyrrhotite) at Pedra Branca.

Past exploration identified anomalous copper in soils, later confirmed by Avanco through detailed soil sampling and mechanical auger drilling, with peak results of up to 600ppm Cu in soil and 561ppm Cu in auger holes (top of saprolite). These copper values compare favourably with geochemical values over the Pedra Branca deposit, and together with the extension of the same structure and magnetic anomaly suggest the target has a high potential for significant Cu/Au mineralisation.

An initial diamond drill program of four holes is planned for 2014.

 

 PedraBrancaExtensionEastDDH_Sep14

Pedra Branca East Extension

 

2 – Rio Branco

The Rio Branca target is located 11km northwest of the Pedra Branca Cu/Au Deposit and 10km south-southwest of the Sossego Cu/Au Mine, close to the new paved road accessing the giant S11D iron ore deposit, within exploration permit DNPM No 850.218/00.

Rio Branco is was first outlined in as a Cu anomaly in soil sampling, and later confirmed by shallow mechanical auger drilling, with a peak results of 2,197ppm Cu.

This target is further enhanced by the presence of hydrothermal alteration similar to that seen at Pedra Branca and Sossego, hosted by the Rio Branco Granite and Xingu Complex gneisses with K-Feldspar-Amphibole-Silica-Magnetite-Chalcopyrite alteration. Chalcopyrite has been observed in outcrop as disseminations in the altered host rock and as stringers. The target also coincides with a magnetic anomalous zone.

An initial diamond drill program of four holes is planned for 2014.

 

3 – São Pedro

São Pedro It is located 28km to the west of Pedra Branca within exploration permit DNPM No 850.526/04. Access is by gravel road from the town of Água Azul do Norte, located 14km to the southwest.

Geology comprises of sheared granites with two distinct hydrothermal alteration assemblages: the distal IOCG type alteration of Albite-Quartz–(K-Feldspar, Magnetite) and the proximal alteration type represented by K-Feldspar-Amphibole-Biotite-Silica-Magnetite-Chalcopyrite (similar to the alteration verified at Sossego and at Pedra Branca).

Copper in soil anomalism is partly coincident with the magnetic anomaly, and to altered sheared granites. Mechanical auger drilling program is planned to test the target, with positive results leading to drill testing.

 

4 – Água Azul

The main Água Azul target is represented by a large and strong magnetic anomaly approximately 5km long and 1km wide, located 60km west-southwest of the Pedra Branca Cu/Au Deposit, and close to the Água Azul do Norte town site. The target is accessable from paved road PA-278.

The target is located in the Sapucaia Greenstone Belt to the south and the Água Azul Granodiorite to the north, with strong East-West shear zones running through the region. Biotite and magnetite hydrothermal alteration is present in places with associated fine-grained chalcopyrite and pyrite.
A number of Cu in soil anomalies are present in the project. The best anomalies have Cu values of up to 849ppm in soils on the magnetic trend, are coincident with Cu in mechanical auger drilling (top of the saprolite Cu values up to 1,687ppm). These copper anomalies and the presence of hydrothermal magnetite (an important feature to most IOCG deposits in Carajás) highlight the potential of this target.

Three anomalous zones have been selected for drill testing in 2014, in an initial diamond drilling program consisting of four holes.

 

 

WorksGeologyRV_Sep14

Works Geology

 

Avanco Recources - Works Geofisic - October 2014

Works Geofisic