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La Verde Project
Location:

La Verde Project is located in central Sonora State, approximately 50 km northwest of the city of Hermosillo.

Deposit Model:

Copper-silver-zinc-gold skarn with associated porphyries.

Ownership:

100% Yale Resources Ltd.

Size:

The La Verde Project is 2,940 hectares (29.4 km² or 7265 acres) in size.

Status:

Available for Option or Joint Venture.

Summary:

La Verde Project is an early to mid stage exploration project with start up copper and silver production potential at the La Verde Grande Mine. Underground sampling at La Verde Grande in the last two years has defined a mineralized body that remains open along trend.

There are records documenting production within the property for over 100years. The most advanced target is the La Verde Grande Mine which has seen historic production from high grade copper and silver skarn mineralization. In addition several other occurrences have been exploited and a non NI 43-101 compliant resource estimate for La Verde Grande was completed.

The continuity of copper-silver skarn mineralization can be defined through geological mapping along projected trends and tested with diamond drilling. Work to define an open pittable resource at La Verde Grande Mine would consist of delineation drilling.

Geology:

The project is located at the western edge of the Arizona-Sonora porphyry copper belt. Porphyry copper deposits, some with associated skarn mineralization, within this district include Cananea, La Caridad, El Creston and El Tecolote.

Skarn mineralization within the La Verde property consists of a series of structurally controlled bodies and fault/breccia zones. Host rocks are a thick sequence of metamorphosed limestones that are locally intruded by granite and granodiorite porphyries, dykes, and historic records mention mineralized aplite dykes.

Copper-silver-zinc-gold mineralization appears to be spatially associated with the granodiorite contact. Structurally, the area has been affected by folding and faulting both on a regional and property scale, which created a northwest-southeast trending antiform through the central portion of the property that hosts the majority of the known skarn deposits. Tertiary felsic volcanics and volcanic agglomerates comprised of rhyolite flows and tuffs overly the sedimentary sequence in the northern portion of the project while Tertiary basalt flows overlie the sediments in the central and southern portions of the project.

Skarn and breccia mineralization at La Verde Project consists predominantly of copper oxides including malachite, chrysocolla and chalcocite. There are historic reports describing sulphide mineralization below the known extent of the La Verde Grande mineralized skarn body.

Preliminary leach tests and historical metallurgical tests of the skarn ore indicates that recoveries of copper, silver and zinc are good with average test recoveries for silver by floatation of approximately 80%, and copper and zinc through acid leaching of approximately 86% and 76% respectively.

Results:

La Verde Grande:

As with all skarn deposits there is a variation in the grades throughout the deposit. Of particular note is the exceptional grades encountered in the lower level: the 11 samples averaged 3.04 % copper and 190.0 g/t silver over 50 metre length of the working.

 

Average height

Number of samples

Cu (%)

Ag (g/t)

Zn (%)

Au (g/t)

 

 

 

 

 

 

 

NE extension - level 0

1.92

23

1.32

49.3

0.70

0.24

NE extension - lower level

1.89

10

2.57

86.8

0.97

0.19

 

 

 

 

 

 

 

Verde Grande - upper level

1.32

13

1.90

65.1

0.58

0.11

Verde Grande - 0 level

2.05

3

0.79

15.0

3.57

0.04

Verde Grande - middle level

2.00

14

0.91

41.7

2.55

0.08

Verde Grande - middle level 2

1.86

7

1.58

70.3

2.00

0.08

Verde Grande - lower level

1.81

11

3.04

190.0

0.16

0.20

Verde Grande - lower level 1

1.83

31

1.75

58.4

2.25

0.11

Verde Grande - lower level 2

1.86

25

1.96

24.4

1.22

0.14

 

 

 

 

 

 

 

Verde Grande - south

1.97

44

0.80

45.3

0.97

0.03

Below is a list of the weighted averages from the six vertical shafts within the La Verde Grande Mine:

 

 

Weighted average

Shaft 1

Vertical metres

Copper (%)

Silver (g/t)

Zinc (%)

 

 

 

 

 

1 - NE Extension

20.0

0.55

7.6

2.59

2 - Principal shaft

24.0

0.71

20.6

3.94

3 - Middle level to lower level

20.0

0.70

29.5

2.45

4 - Upper level to middle level

8.0

0.60

9.2

0.54

5 - Upper level to LVG South

13.3

1.04

36.9

0.61

6 - LVG South to Middle level

8.0

0.48

31.4

0.11

Below are the significant values from each trench. The location of each trench has been measured from the main entrance of the La Verde Grande Mine.

Location
(+ 20 m = metres from
main entrance of mine)

Length (m)

Cu (%)

Ag (g/t)

Zn (%)

Trench 1 (+ 27 m)

14.2

2.14

151.8

0.96

Trench 2 (+ 35 m)

12.0

1.33

14.5

0.48

Trench 3 (+ 42 m)

6.0

2.15

69.6

1.16

Trench 4 (+ 52 m)

6.0

0.03

3.6

1.77

Trench 5 (+ 65 m)

24.0

0.34

5.1

0.96

including:

14.0

0.30

5.3

1.58

Trench 6 (+ 78 m)

21.5

0.50

7.5

1.21

including:

6.7

0.83

14.1

2.27

Trench 7 (+ 94 m)

21.5

0.62

11.3

2.05

including:

8.5

1.08

20.7

2.33

Trench 8 (+ 102 m)

12.0

0.40

2.4

1.30

Trench 9 (+120 m)

4.0

0.49

4.5

2.88

and:

8.0

0.31

6.5

0.02

Trench 10 (+ 150 m)

37.0

0.75

10.5

0.08

including:

10.0

1.21

17.8

0.02



La Tescalama

Skarn mineralization exposed in the tunnel at La Tescalama has many similarities to that within the La Verde Grande Mine. To date the deposit is open in all directions as all of the workings are within mineralization. Below are the complete results from the first phase of sampling:

Sample Number

Sample Height

Cu (%)

Ag (g/t)

Zn (%)

Au (g/t)

145288

2.10

2.66

3.3

1.85

1.06

145289

1.60

0.78

1.8

0.08

0.02

145291

1.70

1.14

6.9

0.09

0.03

145292

1.90

4.99

289.0

3.40

0.90

145293

1.46

0.97

1.9

0.03

0.01

145294

1.30

3.22

5.5

0.05

0.45

145295

1.80

1.11

1.0

0.03

0.05

145296

1.90

0.25

0.6

0.07

0.01

145297

1.70

0.04

0.4

0.08

0.01

145298

1.50

1.34

0.8

0.03

0.09



La Verdecita

Mineralization within the La Verdecita workings appears to be structurally controlled and trends northwest. Below are the complete results from the first phase of sampling at the La Verdecita deposit:

Sample Number

Working

Sample Height

Cu

Ag

Zn

Au

(%)

(g/t)

(%)

(g/t)

145353

La Verdecita I

1.95

3.73

85.8

0.07

0.47

145354

La Verdecita I

1.90

0.07

1.8

0.03

0.01

145355

La Verdecita I

1.80

0.09

2.7

0.02

0.01

145356

La Verdecita I

1.90

0.58

5.3

0.04

0.03

145357

La Verdecita I

1.20

1.60

12.6

0.05

0.19

145358

La Verdecita I

1.85

0.02

4.9

0.02

0.01

145359

La Verdecita II -- level 2

1.80

2.06

19.5

0.03

0.41

145361

La Verdecita II -- level 2

1.95

1.51

1.8

0.04

0.40

145362

La Verdecita II -- level 2

1.50

1.21

3.2

0.02

0.20

145363

La Verdecita II -- level 2

1.65

0.80

1.1

0.02

0.06

145364

La Verdecita II -- level 2

2.10

0.52

1.7

0.02

0.08

145365

La Verdecita II -- level 2

1.55

0.41

1.1

0.03

0.04

145366

La Verdecita II -- level 2

2.00

1.12

1.6

0.25

0.23

145367

La Verdecita II -- level 2

1.90

1.93

0.8

0.16

1.29

145368

La Verdecita II - surface

1.70

1.67

19.4

0.11

0.14

145369

La Verdecita II - surface

1.90

4.89

30.8

0.14

0.20

145371

La Verdecita II - surface

2.05

0.83

10.1

0.07

0.31

145372

La Verdecita II - surface

1.90

0.73

3.7

0.05

0.03

145373

La Verdecita III

2.00

0.01

0.0

0.01

0.01

145374

La Verdecita III

2.00

1.34

6.5

2.41

0.08

145375

La Verdecita III

1.65

2.10

1.4

0.17

0.19



La Cobriza:

The La Cobriza target area is located approximately 150 metres northeast of the San Jose target and is made up of eight historic workings that cover an area that measures approximately 75 metres by 50 metres.

As with the San Jose target the workings at La Cobriza are:

Location

Sample

Sample

Sample

Cu

Ag

Zn

Au

type

number

width (m)

(%)

(g/t)

(%)

(g/t)

La Cobriza - working 1

channel

145381

2.01

2.86

88.0

7.63

0.60

La Cobriza

channel

145382

1.70

0.42

7.7

3.43

0.06

La Cobriza

channel

145383

2.00

1.61

32.7

1.78

0.26

La Cobriza

channel

145384

1.70

1.40

59.8

4.14

0.62

La Cobriza

channel

145385

1.60

1.90

67.0

2.73

0.25

La Cobriza

channel

145386

1.50

0.40

13.5

4.61

0.08

La Cobriza

channel

145387

1.90

2.20

14.2

3.46

0.34

La Cobriza

channel

145388

1.50

0.30

7.7

1.34

0.07

La Cobriza

channel

145389

1.70

3.90

147.0

2.47

0.31

La Cobriza

channel

145391

1.60

0.47

26.6

1.41

0.18

La Cobriza

channel

145392

1.60

0.92

17.4

1.46

0.29

La Cobriza

channel

145393

1.10

0.02

3.5

0.05

<0.005

La Cobriza

channel

145394

1.60

2.18

48.0

6.21

0.08

La Cobriza

channel

145395

1.90

1.01

19.6

1.44

0.20

La Cobriza

channel

145397

2.00

3.68

37.9

5.22

0.21

La Cobriza

channel

145398

1.60

0.61

19.4

1.56

0.05

La Cobriza

channel

145402

1.70

1.02

16.5

1.10

0.34

La Cobriza

channel

145403

1.50

2.23

7.3

5.09

0.57

La Cobriza

channel

145404

1.30

0.02

2.3

0.05

0.01

La Cobriza

channel

145405

1.60

1.53

8.0

2.73

0.12

La Cobriza

channel

145406

2.00

1.07

13.9

2.10

0.08

La Cobriza

channel

145407

1.90

1.31

20.7

2.83

0.28

La Cobriza

channel

145408

1.70

0.03

4.7

0.09

0.01

La Cobriza

channel

145409

1.85

1.46

18.5

3.11

0.21

La Cobriza

channel

145447

2.00

0.01

0.5

0.04

<0.005

La Cobriza

channel

145448

1.60

0.08

8.6

0.14

0.01

La Cobriza

channel

145449

1.95

0.01

2.3

0.01

<0.005

La Cobriza

channel

145451

2.00

0.51

9.4

0.27

0.05

La Cobriza

channel

145452

1.85

0.01

3.8

0.02

0.01



Click here to view the 43-101 for the La Verde Project.  PDF [6.8Mb]


Please read news releases for complete details regarding the La Verde Project.Ian Foreman, P.Geo., is Yale Resources' Qualified Person, as defined by National Instrument 43-101, for the La Verde Project.