Your browser does not support javascript

COPPER-GOLD EXPLORATIONS & DEVELOPMENT IN SOUTH AMERICA

Berta

On June 10 2011, Coro entered into an option agreement to acquire the Berta Property from a local Chilean claim owner. The 506 hectare property hosts structurally controlled disseminated and breccia hosted copper molybdenum mineralization and is located approximately 20km west of the village of Inca de Oro in the III Region of Chile, at an elevation of 1700m, where the Inca de Oro porphyry copper project being developed by PanAust and Codelco.

This project has a published indicated resource of 86.5mt @ 0.63%Cu + 0.13g/t Au + 0.004%Mo (Oxide + Mixed )and 769.7mt @ 0.36%Cu + 0.10g/tAu + 0.01%Mo (Supergene + Primary) (From PanAust Presentation; June 2011)

Anglo American's Manto Verde operating copper mine is located 33km to the northwest of Berta, and Capstone Mining and Korea Resources Corporation Santo Domingo project is located 30km to the northeast.



Berta Option Terms

Coro may acquire 100% of the Berta property for a total of US$6,000,000 by making the following staged option payments;
On signing: US$200,000 (Paid)
12 months from signing: US$800,000 (June 10, 2012)
24 months from signing: US$1,500,000 (June 10, 2013)
36 months from signing: US$3,500,000 (June 10, 2014)
In addition, a 1.5% NSR is payable on any sulphide copper production together with any by-product metals.

Berta History

Berta has previously been explored by two major mining companies in the 1990's who completed wide spaced shallow percussion drilling (48 holes, 1090m), reverse circulation ("RC") drilling (49 holes, 6033m), and bulldozer trenching. More recently, Grandcru Resources Corp. completed a ground magnetic survey and diamond drilling (9 holes, 3311.4m) in 2006-2007. All of the previous holes were assayed for total copper (%CuT), and the oxide sections of 42 of the RC holes were assayed for acid soluble copper. All, except 42 of the RC holes, were also assayed for molybdenum.

Small scale artisanal mining of copper oxide bearing breccias, is currently taking place on the property. Previous drilling intersected both near surface copper oxide mineralization averaging approximately 0.5%CuT with good acid solubility, as well as underlying primary copper-moly sulphide mineralization of a similar grade, in some of the deeper holes. See Table 1. Copper oxide mineralization typically extends from surface to 25-50m depth, but reaches more than 100m in places, and several holes bottomed in mineralization.

Berta Geology and Mineralization

Mineralization at Berta is located adjacent to major Chivato fault zone, and is hosted by a late Cretaceous age tonalitic intrusive complex emplaced in early -- mid Cretaceous age granodiorite host rocks



Recent Work

Coro recently completed a 24 hole (4,360m) reverse circulation drilling program, which was concentrated on only one of the known zones, known as Berta Sur. Coro RC holes are shown in red, older holes in grey, on the map below. The Berta Sur cross section shows oxide mineralization in green, sulphide mineralization in pink, looking NW, and with 50m elevations. Summary intersections are shown on the table.

Moving Forward

We are currently conducting grid geochemistry and a detailed IP survey, aimed at further defining the known mineralized zones as well as exploring other extensive and previously untested areas of similar alteration and mineralization encountered on the property. Upon completion of this work, we intend to conduct additional drilling at Berta.





Hole
  TD
From
To
m
%CuT
Au g/t
%Mo
%CuEq
Type
BR-01
100
2
54
52
0.26
na
0.003
0.27
Oxide
BR-09
210
74
130
56
0.22
0.02
0.030
0.33
Sulphide
BR-12
100
88
100
12
0.30
0.03
0.005
0.34
Sulphide
BR-13
250
6
16
10
0.33
0.02
0.008
0.38
Oxide
BR-13
74
102
28
0.27
0.02
0.044
0.47
Oxide
BR-13
152
174
22
0.16
0.02
0.127
0.72
Sulphide
BR-15
200
2
68
66
0.23
0.03
0.004
0.26
Oxide
BR-15
140
200
60
0.20
0.03
0.030
0.34
Sulphide
BR-16
200
30
200
170
0.19
0.03
0.004
0.22
Both
incl
30
60
30
0.22
0.06
0.006
0.28
Oxide
incl
60
200
140
0.18
0.02
0.003
0.21
Sulphide
BR-17
200
0
200
200
0.58
0.05
0.021
0.70
Both
incl
0
56
56
0.92
0.08
0.009
1.00
Oxide
incl
56
70
14
0.99
0.08
0.016
1.09
Sulphide
incl
70
92
22
0.37
0.04
0.013
0.45
Oxide
incl
92
200
108
0.40
0.03
0.031
0.55
Sulphide
BR-18
200
0
130
130
0.38
0.03
0.047
0.60
Both
incl
0
88
88
0.44
0.04
0.055
0.71
Oxide
incl
88
130
42
0.24
0.02
0.031
0.39
Sulphide
BR-18
144
156
12
0.84
0.08
0.005
0.91
Sulphide
BR-18
188
200
12
0.20
0.01
0.003
0.22
Sulphide
BR-19
200
20
48
28
0.22
0.10
0.003
0.29
Oxide
BR-20
250
68
98
30
0.26
0.02
0.003
0.28
Sulphide
BR-23
250
0
102
102
0.18
0.02
0.001
0.19
Oxide