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AUROTELLURIO GOLD-TELLURIUM ROPERTY
Moctezuma, Sonora, Mexico


Technical Report

Mexivada's AuroTellurio property for Gold, Silver, and Tellurium is located near Moctezuma, Sonora, northeast of Hermosillo, Sonora, Mexico, adjacent to a high grade tellurium-gold-silver mine, the Mina La Bambolla. Mexivada owns 80% of the property, and 20% is owned by California Gold Corporation, which had optioned the property. The concession fees for AuroTellurio are paid up to date.

The AuroTellurio property was staked to surround the La Bambolla Mine, a high-grade gold-tellurium mine and former producer of gold-silver-tellurium ore, controlled by TelOro, which is believed to be a Mexican company offshoot from First Solar Corporation. Old mine maps of the La 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. Tellurium is a critical, expensive, rare metal component in First Solar's and general Electric's photovoltaic solar panels, selling for up to more than US$300/kg in 2008.

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. In addition, CalGold conducted geological and geophysical work on the AuroTellurio property and made a new discovery of an intrusive-related exploration target through geophysics, on the LaViuda-1 mineral concession. No drilling has ever tested this major target, which is large enough for an intrusive hosted gold or skarn or porphyry mineral deposit of very large size.

Old mine maps of the Bambolla Mine property, purchased by Mexivada, show local high-grade rock chip mine sample assay values of gold to 3 ounces per ton Au and tellurium assays to 3% Te in the old Bambolla mine workings. Nine separate vein systems are shown on these old maps, which occur along structures of the apparent strike slip 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 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.

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. CalGold made a new discovery of an intrusive-related exploration target through geophysics, on the LaViuda-1 mineral concession in the southern part of the concession area. 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. California Gold completed geophysics work (magnetics, gravity, CSAMT) at AuroTellurio, and 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.

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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