Metallic Minerals in the Silbak

Sharply defined veins in :stockworks and siliceous breccia matrix contain metallic mineral assembhges and follow a number of subparallel trends within and marginal to a ] p tassium-feldspar porphyritic dacite. The .porphyritic dacite and metal-bearing veins and breccias exhibit both con-. formable and crosscutting relationships with andesite and dacite country rocks of the Hazelton Group. Vein stockwork and breccia zones typically range in width from 1 to 20 metres; they have an en echelon continuity of over I U X I metres and a down-dip exknt of greater than 500 metr:s. The Silbak Premier deposit consists oftvm distinct hrec:ia. and vein stockwork zones that dip steeply at surface and gently at depth. The Main zone trends 050 degrees and is ,:ut by the Wesc zone which strikes 290 degreszs.