CBR Gold Corp. holds a 100% interest in several patented and unpatented lode mineral claims located on Prince of Wales Island, southeast Alaska. The property consists of 146 contiguous staked mineral claims surrounding several parcels of patented land, covering a total of approximately 3,300 acres. Access to the property is by boat or float equipped aircraft.
Figure 1. Distribution of Au-Cu-Ag-Zn Sulfides
The property has a history, dating back to the latest years of the nineteenth century. Modest copper production was recorded from 1902 to 1908. Modern exploration began in 1974, and several major companies worked on the property prior to CBR Gold Corp. acquiring the ground in 2008. Work from 1974 to the present has included: geology, geophysics and geochemistry; the drilling of over 200 surface holes and 28 underground holes; mineralogical and metallurgical studies; and mineral resource calculation for the property.
The Niblack property is underlain by a bimodal suite of volcanic flows and volcaniclastic rocks that have undergone greenschist facies metamorphism. A general stratigraphic framework for Niblack has been constructed based on several generations of detailed fieldwork, drilling, and an extensive lithogeochemical database. The local stratigraphy comprises three main units; the Footwall dacite and rhyodacite unit, the Lookout rhyolite unit containing all sulphide occurrences and the Hanging Wall consisting of mafic volcanic rock and subordinate volcanic-derived sedimentary rocks. All of these units are cut by several sets of mafic dikes.
The stratigraphic sequence at Niblack has been deformed into northerly verging closed folds. The Lookout and Trio sulphide zones are located on the overturned limb of a property scale syncline, with associated smaller-scale parasitic S-folds. The favourable Lookout unit stratigraphy is interpreted as coming back to surface in the Mammoth area and then occurring again, in a complex and probably overturned form, at the old Niblack Mine. Within the Lookout zone, folds plunge moderately to the southwest.
Technical Report
