Cactus Cu-Au-Ag Breccia Pipe
The Cactus project comprises of at least three intrusive, hydrothermal breccia pipes including the historic Cactus copper-gold-silver mine.
Mineralization is hosted within a series of outcropping quartz-tourmaline-chalcopyrite-pyrite breccia pipes. The Cactus, Comet and New Year pipes, as well as two others not previously mined (Colburn and Purity,) are aligned along a west-northwest trending structural corridor some 1,000m long by up to 400m wide. The breccia pipes appear to have preferentially developed in areas where the west northwest structural corridor has been cut by northeast trending cross faults.
Features of the Cactus prospect include:
- numerous outcropping copper-gold-silver mineralised breccia pipes, including the Cactus, Comet and New Year breccias, across a structural corridor up to 1000m in length and up to 400m wide;
- significant historical production from the central Cactus breccia pipe which was mined across an area of approximately 200m long by up to 55m in width and to a depth of 275m.
- subsequent drilling at Cactus defined wide zones of copper mineralisation remaining within the mined area;
- distinct magnetic low signatures associated directly with the mapped breccias, with 3D inversion modelling showing the magnetic low bodies extending to depth and coalescing into a broader, contiguous magnetic low body;
- indications of a widening mineralisation at depth from historic mining data (level maps) and drilling.
Historical mining at the Cactus mine occurred until 1915 and stopped due to mining activities having reached the boundary of the mining claim. Alderan now holds the mineral rights to all adjoining titles.
The Company believes that mineralised copper bearing breccias across the Cactus corridor are likely to extend to depth and coalesce into a larger body of mineralised breccia or may lie above a mineralised porphyry intrusion.
For Cactus images click here
Cactus Canyon Cu-Mo-Au Porphyry Prospect
The Cactus Canyon prospect is a large scale copper-molybdenum-gold porphyry exploration target.
Rocktypes, structural development, mineralization styles and architecture at Cactus Canyon bear strong resemblance to the world class Bingham porphyry deposit in Utah, approximately 400km to the North. Bingham, as with Cactus Canyon, are both related to magmatism induced during the Cretaceous – Tertiary Laramide orogeny through subduction rollback and slab tear. The Cactus breccia pipe system forms part of the Cactus Canyon target, and is seen as part of the expressions of a potential large porphyry at depth.
Key features of the prospect include:
- confirmation of mineralised copper-molybdenum porphyry mineralisation at Cactus Canyon in several historic drill holes;
- 3D magnetic inversion modelling which reveals a large, up to 2km diameter, circular magnetic anomaly beneath outcropping porphyry dikes (several copper bearing) and porphyry style alteration and adjacent to and underneath the Cactus Breccia Pipes. The Company believes this represents a large hydrothermal alteration zone associated with the mineralised porphyry; and
- at least 5 individual porphyry intrusive phases identified to date
The Company believes that further evidence of the existence of a large, mineralised porphyry intrusive is to be found across the Frisco Project including:
- the presence of numerous styles of distal mineralisation normally associated with porphyry intrusions including the Cactus breccia pipe, Accrington skarn and distal gold anomalism;
- strong mineral endowment in distal expressions of the porphyry system at the Cactus Breccia Pipes, Accrington and Horn skarn’s;
- regional scale, intrusion related alteration, typical of large porphyry intrusives; and
- large scale geochemical zonation across the entire Frisco Project with distal gold anomalism, trending to more proximal zinc-lead and central copper dominant anomalism – a key signature of many mineralised porphyry systems.
For Cactus Canyon images click here