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Hyperspectral study shows zoned porphyry style alteration
Grab Samples show results up to 11.35% Cu, 1.55 g/t Au, 129 g/t Ag, and 0.17% Mo
Hyperspectral analyses of rock and select core samples indicate an alteration assemblage indicative of a zoned copper porphyry system.
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Figure 1: Location of the
Project Location
The Copper Plateau Porphyry project is located in southern
2023 Program Highlights
The 2023 program included reconnaissance prospecting, mapping, sampling, and hyperspectral analysis of samples. A total of 19 rock samples from outcrop and 10 samples of core were analysed with a TerraSpec 3 instrument. A total of 5 grab samples were sent to ALS Minerals in
The results of the hyperspectral analysis and field observations indicate a well defined alteration zonation with a central zone covering the location of a number of the historic drill holes. The potassic central area that is indicative of a higher temperature core of a porphyry system was determined by field observations, while the argillic, propylitic, and smectite alteration halos were defined by TerraSpec 3 analysis (Figure 3).
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Sample A0284675 with coarse Chalcopyrite and Chalcocite | Sample A0284675 showing Molybdenite covered fracture |
Figure2: Sample A0284675 returned 11.35% Cu, 1.55 g/t Au, 129 g/t Ag, and 0.17% Mo
Further field observations from the program also identified the Copper Plateau granitoid as a multiphased granite to granodiorite intrusive that is hosted within a large, regional, and distinct potassium feldspar megacrystic granite. The Copper Plateau granitoid shows variations of biotite, hornblende, and magnetite content. Veining within the granitoid includes chlorite and magnetite veins, quartz sulphide veins as stringers, and dense quartz stockwork.
Table 1 Assay Results with Field Notes and Location (NAD83 Zone 10)
Sample | Northing | Easting | Field Description | Au g/t | Ag g/t | Cu % | Mo ppm |
A0284672 | 5489228 | 716683 | Coarse bull quartz vein with trace chalcopyrite along margin. Surrounding granite is silicified with magnetite pods and veinlets with trace chalcopyrite. | 0.018 | 1.33 | 0.101 | 2.58 |
A0284673 | 5489290 | 716891 | Biotite rich medium grained feldspar porphyry granite. Strongly magnetic. 220/37 quartz-chlorite veins with trace pyrite, chalcopyrite, and malachite. Also here, another set of very fine quartz veins with 1 inch K-feldspar selvages. | 0.064 | 1.88 | 0.064 | 7.7 |
A0284674 | 5488884 | 716848 | Cryptically altered biotite granite with shreddy biotite. 1.5 cm rusty quartz veins with significant chalcopyrite, limonite, and malachite. | 0.036 | 4.7 | 0.205 | 10.3 |
A0284675 | 5488862 | 716843 | High grade assay sample from rusty quartz vein partly exposed in new logging road cut bank. Likely orientation 350. At least 30 cm thick, maybe more. Coarse clear quartz with intergrown net texture chalcopyrite (30%), black with bluish incandescence chalcocite (20%) and Mo on fractures perpendicular to the trend of the vein. Wall rock has disseminated chalcopyrite. Alteration is cryptic. | 1.55 | 129 | 11.35 | 1685 |
A0284676 | 5488929 | 717046 | Quartz veins in hornblende porphyry granite with malachite and trace chalcopyrite. Also, limonitic quartz veined shear zone with trace malachite. | 0.048 | 3.21 | 0.219 | 60.7 |
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Figure 3 Zonation Map of Alteration Types at the
What does it mean?
The program results show the existence of a zoned porphyry system at Copper Plateau that has significant copper, gold, silver, and molybdenum values that are consistent with other
Sample Analysis Procedure
All rock samples collected were submitted to
The Qualified Person responsible for the technical content of this press release is
1: Teck Resources AIF 2022
2:
3:Copper Deposits of the NW Cordilleran. CIM Spec. Vol 46
4:Kodiak Copper Website
About Cascade Copper
The Corporation is an exploration stage natural resource company engaged in the evaluation, acquisition, and exploration of copper based mineral resource properties. Cascade is focused on copper and gold, porphyry and epithermal deposits in
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