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AUROTELLURIO GOLD-TELLURIUM ROPERTY
Moctezuma, Sonora, Mexico


Technical Report

Mexivada has optioned 80% of the AuroTellurio property to California Gold (CLGL-OTC) over a 4-year period, for recurrent payments of cash and shares in CLGL, and by spending $3,000,000 on exploration of the property. CLGL made the initial property payments and share issuances to Mexivada in 2011. The AuroTellurio project for gold, silver, and tellurium is located near Moctezuma, Sonora, approximately 140 kilometres northeast of Hermosillo, Sonora, adjacent to one of the world's highest grade tellurium-gold-silver mines, the former producing Mina La Bambolla. This property was staked to surround Bambolla Mine property controlled by TelOro, which is believed to be a Mexican company offshoot from First Solar Corporation (FSLR: NYSE). Tellurium is a critical, expensive, rare metal component in First Solar's photovoltaic solar panels, selling for up to more than US$300/kg in 2008.

Old mine maps of the Bambolla Mine property, purchased by Mexivada, show local high-grade rock chip mine sample assay values of gold and tellurium in the old Bambolla mine workings. Nine separate vein systems are shown on these old maps, which occur along structures of the Mojave-Sonora Megashear fault system, which extends for many hundreds of kilometres of length in northern Mexico, containing many gold systems along its length, including the Mina San Francisco of Timmins Gold, and the El Chanate Mine of AuRico further west.

The AuroTellurio property controls part of the eastern lateral extension of the main Bambolla vein system, and also controls the outcropping La Viuda Au-Ag vein system that lies parallel to the Bambolla gold-tellurium mine system, in a down-thrown fault block on the south flank of the uplifted and eroded Bambolla Mine block. Mexivada has executed an option of up to 80% of the AuroTellurio property to California Gold (CLGL) over a 4-year period. Calgold raised $1,500,000 in a financing, has been conducting geological and geophysical work on the AuroTellurio property, and plans to start drilling in summer or fall, 2012. CalGold made a new discovery of an intrusive-related exploration target through geophysics, on the LaViuda-1 mineral concession. Mine personnel working on a shaft there (Mina La Bambolla) told Mexivada geologists that that extremely high grade tellurium values were taken from samples in the mine, and the old mine maps of the property purchased by Mexivada also show local high gold and tellurium in the old Bambolla mine workings. Nine separate vein systems are shown on these old maps, which occur along structures of the Mojave-Sonora Megashear fault system, which extends for many hundreds of kilometres of length in northern Mexico, containing many gold systems along its length, including the Mina San Francisco of Timmins Gold, and the El Chanate Mine further west. California Gold has completed phase 1 geophysics work at AuroTellurio, and has defined 3 new target areas: 1) A major new porphyry type target area defined by geophysics, 2) A new area along the Bambolla Mine structural zone, east of the mine, and 3) a multi-metal silver-rich target area on Mexivada's LaViuda concession near the old LaViuda Mine.

Mexivada and Calgold control much of the eastern lateral extension of the main Bambolla vein system, and also control the outcropping La Viuda Au-Ag-(?Te?) vein system that lies parallel to the Bambolla system, in a down-thrown fault block on the south flank of the uplifted and eroded Bambolla Mine block.

The La Bambolla mine occurs in an interpreted uplifted fault block that has been eroded. The original depth to surface for the Bambolla veins is not known, nor if they are epithermal or mesothermal in character. The La Bambolla mine had a main shaft, the Tiro General that was approximately 85 metres in depth and had four levels, and mining drifts along approximately a 200 metre length. The main Bambolla Vein on site is exposed at the surface along a length of almost 700 metres. Only a small amount of ore appears to have been removed from the old mine workings, meaning that much more mineralized rock may remain in place at Bambolla.

California Gold has conducted additional geological mapping and geophysics (magnetics, gravity, and CSAMT) in the AuroTellurio property area, to better elucidate any extension to the existing vein systems and to discover new, hidden metal systems that may be present under cover. CalGold reported the new discovery of an intrusive-related exploration target through geophysics, on the LaViuda-1 mineral concession, and plans to start drilling in summer or fall, 2012.

Maps & Photos
Click on thumbnail to enlarge


AuroTellurio Area

Geology- AuroTellurio Area

Bambolla Te-Au-Ag-Mine

AuroTellurio Property Geologic Map

Bambolla East Extension

AuroTellurio Property Targets

LaViuda Mine

LaViuda East Extension
 




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