Commodity: Gold in mineralized structures.
Partner: Available for Joint Venture
Location: The Gertrudis cateo is in the north-eastern part of the Deseado Massif, approximately 100 Km to the NW of the Don Nicolas Mine and 150 Km East of Cerro Negro.
Project Operator: Magna Terra Minerals Inc. has 100% control of the Gertrudis projec
Property Information: The Gertrudis project is comprised of two mineralized structures. These veins are some 300 m apart, sub-parallel and steeply dipping and are comprised of silicified tectonic and volcanic breccias with argillic alteration halos. Low grade Au anomalies occur in both veins which are also associated with As, Sb and Hg anomalies. The Gertrudis vein is the more prominent of the two and extends for 800 m. This is a NNW striking structure which is steeply dipping to the WSW, and is well exposed along most of its length. The second vein is exposed for 350 m and does not exhibit a measurable dip.
Geology: This property is comprised of 3 M.D. concessions constituting 10,000 Hectares.
To the East the Bajo Pobre Formation is present but appears to be unaltered with only calcite veins at the surface. To the West of the veins is a plane of Cretaceous cover. This field relationship implies considerable exploration potential to the north and south of the known mineralization where there was continuation of the veins.
The Gertrudis vein extends for 800m and forms hilly and jagged topography. This vein consists of silicified volcanic and tectonic breccias with an argillic alteration halo.
This is a NNW striking structure which dips to the WSW, and is well exposed along most of its length. Average Au from the 86 samples on the Gertrudis Vein is 38 ppb. The Au is accompanied by averages of 75 ppb Hg, 145 ppb As, 53 ppm Pb and 3 ppm Sb. Whilst the averages are low, the maximum values obtained from these elements are 320 ppb Au, 348 ppb Hg, 381 ppm As, 231 ppm Pb and 26 ppm Sb. The second vein is much less prominent and is 400m in length with average Au from 20 samples of 23 ppb. The Au is accompanied by averages of 1312 ppb Hg, 97 ppm As, 57 ppm Pb and 4.7 ppm Sb. The maximum values obtained from this vein are 99 ppb Au, 15,750 ppb Hg, 318 ppm As, 148 ppm Pb and 31 ppm Sb.
The low Au trace elements in both veins are accompanied by a north to south zoning with the strongest Au numbers at the northern end of the veins and the strongest As numbers occurring at the southern end. Hg and Sb anomalies occur in the second vein but not in the Gertrudis Vein. We interpret the Gertrudis project to represent the top of an epithermal system with the second vein being higher in the system than the Gertrudis Vein and with the system plunging to the SSE.