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File Created: 21-Apr-2008 by Garry J. Payie (GJP)
Last Edit:  04-Apr-2022 by Karl A. Flower (KAF)

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Name BRYAR, SUTL Mining Division Atlin
BCGS Map 104K066
Status Showing NTS Map 104K10W
Latitude 058º 37' 12'' UTM 08 (NAD 83)
Longitude 132º 57' 46'' Northing 6499540
Easting 618320
Commodities Gold, Zinc, Silver Deposit Types K02 : Pb-Zn skarn
Tectonic Belt Insular Terrane Stikine
Capsule Geology

The Bryar occurrence is located about 8.3 km southeast of Lisadele Lake, and northwest of the Sutlahine River.

The Bryar area is underlain by Lower Jurassic Takwahoni (Laberge Group) sandstone and conglomerate, which have been intruded by at least three different phases of Late Cretaceous intrusive rocks.

A zone of massive sulphide was discovered on the boundary between the Sutl 13 and 14 claims of Rimfire Minerals Corp in 2004. The massive sulphide zone is conformable to bedding of the sedimentary rocks and extends for 115 metres with an approximate average thickness of 4 to 6 metres, covered by overburden on either side. The extent of mineralization is not known, but is open along strike in both directions. Sulphide mineralogy includes pyrrhotite and sphalerite with minor chalcopyrite. Calc-silicate minerals dominate the wall rock alteration and include garnet with lesser diopside. One sample yielded 10.0 per cent zinc and 2.1 grams per tonne silver (Assessment Report 27589).

In 2004, about 250 metres south-southeast of the above massive sulphide skarn showing, Rimfire also discovered a gold bearing silicified fine-grained sandstone. The sample was taken from an outcrop that becomes covered by overburden, obscuring the extent of mineralization. The sample contained approximately 5 per cent disseminated pyrite and was strongly silicified. The sample also contained an unidentified conspicuous irregularly shaped black mineral. The sample assayed 10.7 grams per tonne gold, 2.2 grams per tonne silver and 0.047 per cent copper (Assesssment Report 27589).

Cominco Limited conducted a regional reconnaissance program in the Bryar area in 1988. It is not known how many samples and from where sampling was conducted, however a sample of quartz-arsenopyrite vein was collected on the Bryar property (the Sutl 13-16 claims of Rimfire in 2004), which assayed 17.043 grams per tonne gold (Assessment Report 19326). The ground was staked one year later, in order to follow up the sample. During the 1989 program, several thin quartz-arsenopyrite-pyrite veins were found to have been predominantly hosted in quartz-biotite-feldspar porphyry and to a lesser extent in the adjacent hornfelsed clastic sedimentary rocks. These sedimentary rocks were hornfelsed by this porphyry.

During June 2004, Rimfire initiated a regional geological mapping, prospecting and soil and silt sampling program on the LJ and Sutlahine claim groups, collecting 85 rock -, 92 silt - and 504 soil samples (Assessment Report 27589).

In 2005, Barrick Gold Incorporated explored its large claim holdings (including the Sutlahine claims of Rimfire Minerals) that extended from Tatsamenie Lake northwest to the Taku River. The property covered a 70 by 20 km area. Barrick collected 848 rock -, 46 stream sediment - and 31 soil samples. Results from the field season were generally poor.

See MINFILE occurrence Sutl (MINFILE 104K 146) for further details of work history in the area.

EMPR ASS RPT 2537, 15477, *19326, 21530, 21907, *27589, 28196
EMPR FIELDWORK 1994, pp. 324-342
EMPR OF 1995-5
GSC MAP 6-1960; 931A; 1262A
GSC MEM 248; 362
GSC P 45-30
Burrell, H., Deiss, A.M. (2021-06-23): Thorn Property NI 43-101 Technical Report Sutlahine River Area, British Columbia, Atlin Mining Division