Radius Gold Options Mexican Epithermal Ag-Au Property

VANCOUVER, Feb. 26, 2013

Artisanal-scale mining of surface outcrop is known to have occurred in the area from pre-colonial times. Reliable historical reports indicate that more modern small-scale underground mining operations produced, from the late 1800s up to 1926, over 40 Moz of silver and 400 koz of gold from 1.05 Mt at weighted-average grades of 1,300 g/t Ag and 13 g/t Au.

Mineralization is associated with two principal vein swarms, the Pozos system and the Santa Brígida system, each striking generally NW with steep SW dips. Historic production focused on discrete high-grade ore shoots within hydrothermal quartz veins and surrounding altered wall-rock. Historical production records indicate that individual operations mined mineralized shoots ranging from 5 kt to 300 kt in size, with average grades ranging from 200 g/t Ag to 2,500 g/t Ag, and 2 g/t Au to 40 g/t Au. The richest shoot documented produced 300 kt grading 2,500 g/t Ag and 15 g/t Au.

The property is underlain by folded Jurassic-aged sedimentary rocks including carbonaceous shales, shales, arenites, and greywackes, which are discordantly overlain by Cretaceous limestones and Tertiary volcanic rocks. Most of the district is covered by recent soils and caliche, and known areas of mineralization are all hosted by the Jurassic sedimentary sequences where these outcrop.

Planned Work

Radius's initial exploration efforts will be concentrated on the Santa Brígida vein system, near the town of Mineral de Pozos, in flat-lying agricultural and cattle grazing lands. The veins are exposed in discontinuous outcrop over 1 km in strike length, along a regional topographic lineament likely related to faulting, and which is parallel and potentially genetically related to the mineralized system. Radius believes there is excellent potential for the extension of the Santa Brígida vein system in both directions.

The historical Santa Brígida mine exploited three ore shoots along the vein system with mine workings up to 250 m in depth, and approximately 1.3 km in length. The potential for discovery for Radius is chiefly along strike both to the SE and NW, beyond the last surface expression of the vein system, where its outcrop disappears below recent soil and caliche cover.