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San Juan Exploration

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Reserves / Resources

The San Juan property is 313 km2 in size and is a complete mining district that covers an up-thrown block which forms a window to the basement Jurassic to Cretaceous Yura Group meta-sediments. This block forms a window through the thick overlying Miocene-Pliocene Senecca Volcanics. The Yura Group contains intrusions of the Bella Union Complex and Coastal Batholith, both of which are intruded by younger granodiorite stocks. The Bella Union Complex and the granodiorite stocks have been extensively fractured and mineralized with gold-bearing veins and stockworks.

San Juan Exploration includes the following properties: San Juan Mine Proper, Golden Champune, Veta Clara, Santa Clarita, Erika and San Juan Regional.

San Juan Mine Proper

  • The San Juan Mine historically produced 1.2 million ounces of gold from the San Juan and Mercedes veins. Prior to Century’s commencement of an exploration program in November, 2006, the property had never been drilled. The San Juan and Mercedes veins have excellent potential to expand both along strike and down dip. Thirty-five additional veins that parallel and are diagonal to the Mercedes and San Juan veins are also well mineralized as shown by sampling in 2006 and have similar potential to host significant gold resources.

  • New access roads have been constructed and surface drilling is testing these new veins and extensions of the Mercedes and San Juan veins. The results of initial surface diamond drilling (Hole 06SJ-2) at the San Juan mine intersected 1.8 meters at a grade of 46.7 grams/tonne (g/t) gold and 26.3 g/t silver. The true width of the Mercedes vein cut by the drill hole was calculated to be 1.2 m at a grade of 46.7 g/t gold and 26.3 g/t silver. The highest grades are along the upper and lower parts of the vein and range from 71.8 to 62.0 g/t of gold. These results are summarized in the table below:

Mercedes Vein Samples, Hole 06SJ-2

Drill Hole

Sample
Number

Au (g/t)

Ag (g/t)

From (m)

To (m)

Intersected
Width (m)

06SJ-2

10

71.8

82.5

210.30

210.80

0.50

06SJ-2

11

35.0

6.3

210.80

211.30

0.50

06SJ-2

12

8.0

0.8

211.30

211.65

0.35

06SJ-2

13

62.0

6.1

211.65

212.10

0.45

  • Underground sampling and development work is planned to establish additional resources on the San Juan and Mercedes veins.

  • The results of the drilling program, assaying and other sample work for this property will provide the basis for the preparation of an NI 43-101 technical report. Chlumsky, Armbrust and Meyer, LLC of Lakewood, CO have been retained to review the results of the exploration program.

Golden Champune

  • The Golden Champune property consists of an extensive stockwork in Coastal Batholith granodiorite covering several square kilometers.

  • The stockwork consists of sheared alteration rims with pervasive sericite, iron oxides and thin quartz veinlets surrounding brecciated granodiorite fragments.

  • Historic sampling returned values of up to 3.1 g/t Au.

  • Century’s 2006 sampling program included 542 rock chip panel samples taken from the stockwork.  The samples weighed 3 to 4 kilograms and were taken from 2mx2m panels.   The sampling program was aimed at testing the potential for a bulk tonnage gold deposit. The program returned a maximum gold value of 0.68 g/t Au which indicates that the stockwork does not host a low-grade, bulk tonnage target.

  • The Golden Champune property will be re-evaluated as a potential vein system target.

Veta Clara

  • The Veta Clara target is a vein swarm and alteration system located in the southern portion of the property with a known strike length of over 3 kilometers.

  • A small portion of the Veta Clara property is currently being mined under an agreement with independent miners who are working the surface portion of one vein and transporting the ore 4 kilometers to the San Juan mill.

  • A 30 meter adit has been established on the vein.

  • Sampling by Century to test the veins and alteration zone for the presence of a large, low grade deposit returned good grades on the veins but failed to show significant gold grades in the surrounding alteration. A total of 875 samples were taken, which returned the grades given in the following table:

Number of Samples

Grade
Gm/tonne  Au

10

5.00 plus

11

3.00 to 5.00

22

1.00 to 3.00

146

0.50 to 1.00

686

Trace

  • Further testing is planned including diamond drilling, sampling, assaying and some road building.

Santa Clarita

  • The Santa Clarita showing is approximately one kilometer square and is hosted by andesites within a diorite intrusive of the Bella Union Complex.

  • A total of 206 samples taken by Peru Universidad de Ingenieria in1989 returned gold values up to 4 g/t Au in several clusters. A ground IP survey was also conducted but was inconclusive due to poor ground contact at the poles.

  • Minera IRL S.A. mapped and sampled the area in 2006 and obtained moderately anomalous values in molybdenum (maximum - 1,601 ppm), copper (maximum - 343 ppm), and gold (maximum - 480 ppm). The property is 4 kilometers from the San Juan Mine with road access.

  • Further sampling and drilling is planned that will determine the character of the mineralization.

Erika

  • The Erika showing is located in the southeast corner of the San Juan property about 6 kilometers from the San Juan Mine. The property abuts Teck-Cominco claims to the south and east, which cover a copper porphyry discovery in similar rocks south-east of the Erika property.

  • The Erika target consists of feldspar porphyry that has intruded quartzose siltstones of the Yura Group.

  • The Erika showing contains copper values in the siltstones that surround the intrusive but insufficient work has been done to date to provide adequate geochemical coverage of the target area.

The Company will complete a geochemical and mapping survey over the entire two square kilometer area of the showing to more clearly understand the geology and mineralization.

San Juan Regional

Century intends to carry out a regional prospecting, sampling and mapping program over the 313 km2 San Juan property as there are other known showings on the property that have not been well documented. These showings are thought to be vein-style gold mineralization and include the Lily La Huaca area and the Northern Vein. There is no information on the Lily La Huaca or the Northern Vein but the Northern Vein is currently being mined by informal miners. The Northern Vein extends for 3 kilometers on Century property; however, this has not yet been documented by Century.

 

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