The Mama Susu-D-E-F showings are all located in a small valley containing an outflow stream fed by an icefield and are separated from each other by varying widths of less intensely altered (sericite-calcite-chlorite-limonite) andesitic pyroclastics, probably of the Lower Jurassic Hazelton Group, just west of the contact with rock of the Upper Triassic Stuhini Group.
The showings consist of shear zones 30, 20 and 50 metres wide separated by 70 and 100 metres respectively, all striking northeast-southwest. The showings are separated, roughly east to west, across about 350 metres in total. All are very strongly to completely altered to sericite with auxiliary quartz and disseminated pyrite (up to 5 per cent). Locally they contain pockets of massive sulphide with galena (up to 30 per cent), pyrite (up to 50 per cent), limonite (up to 50 per cent), sphalerite (up to 10 per cent) and minor stibnite, wad and malachite-azurite staining.
Gold and silver assays of grab samples from Mama Susu-D were generally low, with a high of 0.343 gram per tonne gold in sample #34556 and 442.3 grams per tonne silver in sample #34523. Base metals ranged from 0.01 per cent to 0.73 per cent copper, 0.04 per cent to 2.86 per cent lead, and 0.07 per cent to 3.73 per cent zinc. All the highest base metal assays were derived from sample #34523 which consisted of strongly sericitized andesitic tuffs with 1 to 2 per cent galena, limonite and wad. All of the above samples were collected from subcrop."
Gold assays from Mama Susu-E were quite low, ranging from below detection limits to 0.206 gram per tonne (#34525). Silver was also low though 3 samples assayed greater than 68 grams per tonne including 699 grams per tonne from sample #34526. Copper ranged from 97 parts per million to a high of 0.10 per cent (#34526), lead from 352 parts per million to 3.31 per cent (#34526) and zinc from 81 parts per million to 0.34 per cent (#34524). Samples #34524 and #34525 are float material while #34526 was a 1.0 metre chip sample of intensely sericitized andesitic tuffs? with 2 to 3 per cent pyrite, 3 to 5 per cent galena and abundant limonite."
Gold and silver results from Mama Susu-F were low, ranging from 20 parts per billion to a high of 550 parts per billion gold in massive sulphide (#46017) and two significant silver assays of 383.3 grams per tonne (#46014) and 1835 grams per tonne (#46017). Base metal results were lower than expected except for select grabs which assayed as high as 42.70 per cent lead (#46017) and 9.16 per cent lead (#34531). Copper values were low except for sample #46017 which assayed 6058 parts per million. Zinc returned three strongly anomalous values of 5.16 per cent (#46017), 6.72 per cent (#34530) and 8.29 per cent (#34531). Samples #34530 and #34531 consisted of mineralized silicified siltstone and andesite tuff respectively."
In 2017, Tudor Gold Corp. reported that the RR Ag-base metal vein holes were collared 800 north of the HC zone, following the same structure. A plot of the RR zone puts it on the older Mama Susu D-E-F showing. Best results of 2 holes were given as 399 grams per tonne silver over 1 metre, from 6 to 7 metres depth (hole RR-17-04) and; 544 grams per tonne silver over 0.8 metre, from 48 to 48.8 metres depth (hole RR-17-03) (Tudor Gold Corp., News Release, December 7, 2017).
See HC 104B 371), GR2 (104B 370), Copper Belle (104B 518) and Eureka (104B 078) for further details of work on the Treaty Creek property of Tudor Gold.