Chivas Gold-Copper Zone Project Summary
There was no reported work at the Chivas Gold-Copper Zone until 2014, when Thompson and Posescu ran a single 700 m long soil line on a break in slope in the area. Most of the soil samples returned highly anomalous gold values with a high of 11.00 ppm Au, 12.70 ppm Ag and 11.4 ppm Te. During 2016, a large soil sampling program was completed and the Chivas Zone now represents the largest gold-in-soil anomaly on the property of greater than seven square km (3.5 km x 2 km). In addition, Brixton conducted geological mapping and contracted Quantec to survey 15.5 km of Titan24 DC/IP geophysics over the Chivas Zone.
- Drilling discovers Au-Ag mineralization over a large area and remains wide open.
- Mineralization and alteration style appear to be porphyry related.
- This is the first round of drilling ever at the Chivas Zone.
- Hole 142 intersected 6.45m of 4.86 g/t AuEq within 18m 1.83 g/t AuEq.
- Hole 143 intersected 8m of 4.01 g/t AuEq within 11m of 2.96 g/t AuEq.
- Hole 144 intersected 17.26m of 2.62 g/t AuEq within 52.00m of 0.87 g/t AuEq.
- Surface mapping identifies a new open ended 1.2 km copper corridor which is yet to be drill tested and several gold targeted holes have increasing copper grades at depth.
2017 Summary: Phase One
Brixton completed ten NQ-sized core drill holes for a total of 2,455 metres at the Chivas Zone. Drilling at the Chivas Zone was designed to test the gold-in-soil anomaly identified in 2016. The gold-in-soil anomaly at the Chivas Zone covers a 7 square kilometre area and has corresponding chargeability anomalies from the 2016 Titan-24 DC/IP survey. In 2017 Brixton collected 517 soil and 56 rock samples throughout the property and completed two weeks of 1:2500 and 1:5000 scale geological and alteration mapping at the Chivas Zone. Aerial Lidar was conducted over a 210 square kilometre area.
A reconnaissance soil line in a new area 2.7 kilometres south from the southern end of the Chivas Zone returned an anomalous copper-in-soils area with a single rock sample returning 4.38% Cu and 0.8 g/t Au.
Drill Results 2017
All of the 2,455m (10 holes) at the Chivas Zone were drilled within an area of 800m by 800m.
THN17-142 intersected two mineralized zones, an upper zone from 40m depth of 21.00m of 0.46 g/t Au and 39.74 g/t Ag or 1.03 AuEq. The lower zone intersected 18.00m of 0.99 g/t Au, 19.46 g/t Ag, 0.66% Zn, 0.19% Pb or 1.83 g/t AuEq from 161.00m depth. Included in this lower interval was 6.45m of 4.86 g/t AuEq as 2.63 g/t Au, 45.15 g/t Ag, 1.5% Zn, 0.18% Cu, 0.42% Pb.
Drill collar location map:
Cross section of A-A’:
THN17-143 intersected 11m of 2.96 AuEq starting at 59m depth as 0.54 g/t Au, 147.78 g/t Ag, 0.27% Zn, 0.25% Pb including 8m of 4.01 g/t AuEq as 0.71 g/t Au, 202.49 g/t Ag, 0.35% Zn, 0.34%Pb.
THN17-144 intersected 52m of 0.87 g/t AuEq as 0.31 g/t Au, 39.56 g/t Ag, including 17.26m of 2.62 g/t AuEq as 0.61 g/t Au, 110.27 g/t Ag, 0.36% Zn, 0.36 Pb.
THN17-145 intersected 1.15m of 5.25 AuEq as 5.15 g/t Au, 7.30 g/t Ag, within 9.80m of 0.93 g/t AuEq.
THN17-147 intersected 1.00m of 5.10 g/t AuEq as 5.08 g/t Au, 1.6 g/t Ag within 18.97m of 0.51 g/t AuEq.
Several drill holes have increasing copper grades down hole and THN17-149 intersected 39m of 0.11% Cu. THN17-148 was abandoned due to poor ground conditions.
Cross-section of B-B’:
Summary table of mineralized composites:
All reported assays are uncut weighted averages. The true width of reported mineralization is unknown at this time. Gold Equivalent values (AuEq) were calculated using the formula AuEq = $1,200 x Au g/t ÷ 31.104 + $17 x Ag g/t ÷ 31.104 + $3 x % Cu ÷ 100 x 2204.63 + $1 x % Pb ÷ 100 x 2204.63 + $1.20 x % Zn ÷ 100 x 2204.63/$1,200 x 31.104. This method assumes full metal recoveries as metallurgical work has not been conducted.
The Chivas Zone is dominated by Upper Triassic Stuhini Group mafic volcanics. Two diorite intrusive units that cut the Stuhini rocks were mapped in the area during 2016. These intrusions were not previously recognized. The red-line unconformity boundary was mapped in the area of the gold anomaly.
The Company collected a total of 1,306 soil samples during 2016 at the Chivas Zone returning a high of 6,700 ppb Au. Results have delineated a substantial 7 km2 gold-in-soil anomaly at the Chivas Zone with a predominant northwest trend. The strike length of the anomaly is 3.5 km in a NW/SE trend and up to 2.0 km wide and remains open.
Map of Geochemical Results for Thorn Project:
In 2016, Brixton contracted Quantec Geoscience to run an IP survey over the Chivas area. The IP survey was conducted over 15.5 km of Titan24 DC/IP dipole-dipole array. The seven survey lines were orientated in a north-south direction at 300 m spacing with 50 m stations. The IP survey at the Chivas Zone succeeded in identifying a strong near surface chargeability high anomaly with a 2.4 km strike length and up to 1.8 km in width. The chargeability anomaly is open to the NW/SE and at depth.
Image of Vertical Magnetic Gradient & Structural Interpretation of Thorn Property: