Mineralization at DCG is currently defined in four veins. The largest vein, C4E, contains about 64% of DCG’s current mineral resources. Sampling in workings along vein structures indicates that from 18% to 35% or more of the vein material is mineralized, ranging from 0.30 m to 1.25 m in widths, averaging 0.61 m. The veins occur in relatively permeable northeast striking fault-fissure zones and are oxidized from the surface to depths of about 50 m. Weak silver-lead mineralization at surface was exposed by trenches at around 200 m interval. The grade improves with depth.
Dominant sulphides are galena, typically comprising a few percent to 10% of the vein, together with a few percent sphalerite and pyrite and minor argentite. Minerals occur in narrow massive bands, veinlets or as disseminations in gangues. The typical silver grade ranges between 20 and 285 g/t and can be as high as 2,000 g/t. Gold mineralization has been discovered in some samples, but more work is needed to reveal the distribution of gold at DCG.
