Highlights:
Tremor is a new target in the northern extension of the Jumbo Trend where we have discovered a new gold system named an Intrusive-Related Gold System (IRGS).
This IRGS was first noted in hole J-21-006 and later confirmed in hole J-21-015.
J-21-006 Highlights include:
- 5.95 g/t gold with 66.5 g/t silver over 24.4 meters, which included
27.30 g/t gold with 259.4 g/t silver over 4.6 meters, and
0.52 g/t gold with 4.7 g/t silver over 82.3 meters
J-21-015 Highlights include:
- 1.42 g/t gold equivalent over 33.5 meters within the vein system, which includes,
3.26 g/t gold equivalent over 10.7 meters and - 0.64 g/t gold equivalent over 54.9 meters within the intrusive, which is still open at depth
Location:
This new gold system is situated along the northern extension of the Jumbo Trend of the large Gold Springs project of 8000 ha located on the border of Nevada and Utah.
Description:
Unlike the current resources at Gold Springs the “Tremor” target is an Intrusive-Related Gold System situated along the north extension of the Jumbo Trend in Utah where a strong CSAMT high resistivity anomaly extends for 1,200 meters.
Intrusive-Related Gold Systems (IRGS) form at deeper levels with the gold controlled by thin stockwork veins, breccias, or disseminated within the intrusion. IRGS are known to form large gold deposits. The new “Tremor” target has magnetite as a dominant component deeper within the intrusive and the alteration is characterized by secondary biotite and potassium feldspar. It is possible that the two systems, epithermal and IRGS, are of different ages and only related spatially. From the results received thus far both stockwork veining and disseminated gold appear to be components of this new discovery. The gold-bearing intrusive was emplaced along a strong north-south structural corridor and has been traced in drill holes for nearly 600 meters. Intercepts of the intrusive range from 3 to 280 meters with the thickest intercepts bottoming in the intrusive. Holes in the “Tremor” target area also intersected rhyolites and mafic dikes which have been shown to contain gold mineralization within the contact zone of the “Tremor” intrusive.
Historical Mining:
Tremor is a northern extension of the North Jumbo and the historical work is described under the North Jumbo Target.
Drilling:
The Company has completed 18 holes at “Tremor” designed to test the extent of the intrusive hosted gold system.
Drilling results:
GRC has received assay results from 3 holes and is waiting for assays on the remaining 15 holes at “Tremor”. Once those assays are received, the Company plans to drill additional holes at “Tremor”
Drilling highlights include:
Hole |
Host Rock |
From (m) |
To (m) |
Thickness** (m) |
Gold (g/t) |
Silver (g/t) |
Gold Equivalent* |
J-21-006 |
Vein |
118.9 |
143.3 |
24.4 |
5.95 |
66.5 |
6.87 |
including |
Vein |
129.5 |
134.1 |
4.6 |
27.3 |
259.4 |
30.9 |
and |
Intrusive |
192.0 |
274.3 |
82.3 |
0.52 |
4.7 |
0.59 |
including |
Intrusive |
192.0 |
217.9 |
25.9 |
0.68 |
5.7 |
0.76 |
J-21-015 |
Mixed |
108.2 |
271.3*** |
163.1 |
0.93 |
5.1 |
1.00 |
including |
Vein |
108.2 |
141.7 |
33.5 |
1.32 |
7.4 |
1.42 |
including |
Vein |
109.7 |
120.4 |
10.7 |
3.07 |
13.5 |
3.26 |
Including |
Vein |
109.7 |
114.3 |
4.6 |
5.89 |
20.5 |
6.17 |
including |
Intrusive and contact zone |
147.8 |
271.3*** |
123.5 |
0.87 |
4.7 |
0.94 |
J-21-016 |
Vein |
93.0 |
102.1 |
9.1 |
1.76 |
44.0 |
2.36 |
including |
Vein |
94.5 |
99.1 |
4.6 |
3.08 |
83.0 |
4.23 |
And |
Rhyolite |
132.6 |
147.8 |
15.2 |
0.41 |
18.6 |
0.67 |
* Gold Equivalent calculated at $1,800 gold and $25 silver
** True thickness is estimated to be 70-90% of total thickness
*** Hole ended in gold mineralization
Drill hole table:
Hole ID |
Easting - UTM NAD 27 |
Northing |
Elevation Meters |
Azimuth |
Inclination |
TD (m) |
J-21-010 |
761324 |
4199760 |
2131 |
270 |
-70 |
329.2 |
J-21-011 |
761328 |
4199693 |
2135 |
245 |
-70 |
329.2 |
J-21-012 |
761254 |
4199690 |
2130 |
270 |
-80 |
329.2 |
J-21-013 |
761335 |
4199763 |
2129 |
90 |
-65 |
329.2 |
J-21-014 |
761389 |
4199615 |
2111 |
270 |
-60 |
274.3 |
J-21-015 |
761334 |
4199566 |
2123 |
270 |
-75 |
271.3 |
J-21-016 |
761337 |
4199514 |
2111 |
290 |
-75 |
259.1 |
J-21-017 |
761285 |
4199799 |
2140 |
270 |
-80 |
274.3 |
J-21-018 |
761300 |
4199902 |
2141 |
0 |
-90 |
326.1 |
J-21-019 |
761308 |
4200011 |
2155 |
270 |
-70 |
326.1 |
J-21-020 |
761345 |
4200307 |
2189 |
270 |
-60 |
326.1 |
J-21-021 |
761336 |
4199837 |
2126 |
270 |
-70 |
326.1 |
J-21-022 |
761366 |
4199659 |
2154 |
0 |
-90 |
243.8 |
J-21-023 |
761349 |
4199466 |
2120 |
290 |
-70 |
326.1 |
J-21-024 |
761361 |
4199537 |
2113 |
270 |
-75 |
259.1 |
J-21-025 |
761343 |
4200043 |
2177 |
270 |
-75 |
274.3 |
J-21-026 |
761281 |
4199523 |
2105 |
290 |
-65 |
243.8 |
Summary of Vein and Intrusive Intercepts
GRC geologists have completed detailed logging of the drill cuttings demonstrating the continuity of the “Tremor” intrusive both along strike and at depth, as well as highlighting the strike extension of the vein zone for over 200 meters. The intrusive and the vein remain open to expansion along strike and at depth.
Hole ID |
Intrusive Intercept |
Vein Intercept |
Hole ends in Intrusive |
J-21-006* |
Yes |
Yes |
Yes |
J-21-010 |
Yes |
No |
Yes |
J-21-011 |
Yes |
Yes |
Yes |
J-21-012 |
Yes |
No |
No |
J-21-013 |
Yes |
No |
No |
J-21-014 |
Yes |
No |
No |
J-21-015* |
Yes |
Yes |
Yes |
J-21-016* |
Yes |
Yes |
No |
J-21-017 |
No |
No |
No |
J-21-018 |
Yes |
No |
Yes |
J-21-019 |
Yes |
No |
No |
J-21-020 |
No |
No |
No |
J-21-021 |
Yes |
No |
Yes |
J-21-022 |
Yes |
No |
No |
J-21-023 |
Yes |
No |
Yes |
J-21-024 |
Yes |
No |
Yes |
J-21-025 |
Yes |
No |
No |
J-21-026 |
Yes |
No |
No |
* Assays received
Resource:
None at the time
Structural geology:
“Tremor” is located on the northern extension of the Jumbo Trend. This trend follows a large north-south structural zone which also appears to control the emplacement of the intrusive body hosting the “Tremor” gold system. Drilling has demonstrated east-west structural offsets to the intrusive measured in 10s of meters, but additional drilling will be required to clearly understand the extent and magnitude of these offsets.
Geophysics:
The Jumbo Trend is highlighted by a large north-south, high resistivity, geophysical anomaly identified by both the airborne ZTEM and ground based CSAMT surveys. “Tremor” occupies the northern extension of this resistivity anomaly which remains open to the north. In addition to the resistivity “Tremor” displays a magnetic high signature related to the magnetite content of the rock. The magnetic high extends several kilometres north of any of GRC’s drilling.