Yarawindah Brook Project

Yarawindah location map

The Yarawindah Brook Project is an early stage, underexplored Nickel-Copper-Cobalt project.

Cassini Resources Limited has secured an option to acquire the Yarawindah Brook Ni - Cu - Co Project in Western Australia. Cassini entered an option agreement to earn into the Yarawindah Brook Project through private company Souwest Metals Pty Ltd (Souwest).

Yarawindah Brook is located 130km northeast of Perth, in agricultural land near the township of New Norcia. The Project has had only limited nickel, copper and cobalt exploration despite a favourable regional setting, prospective geology and near-surface occurrences of nickel and copper. Historic exploration has focussed primarily on a small platinum and palladium (PGE’s) resource which the Company views as a “path-finder” anomaly for massive nickel-copper-cobalt sulphides. Exploration for nickel and copper has been sporadic, however the most recent drilling in 2007 targeting surface EM anomalies, returned encouraging results from hole YWRC0083 including 7m @ 1.30% Ni, 0.22% Cu, 0.06% Co and 432ppb Pd from 74m. Despite the promising result no further follow-up drilling was conducted due to budget limitations of the previous operator during the exploration downturn post-GFC.

Historic drilling has identified primary nickel and copper mineralisation over a strike length of at least 2km, with only a handful of these holes deeper than 100m. In addition, reconnaissance rock chip sampling has identified other anomalous nickel outcrops on the project that are yet to be drilled (Figure 2). Rock chip samples have reached up to 0.49% Ni.

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 Figure 2. Yarawindah Brook geology and exploration 

 Cassini has compiled all previous drilling as well as numerous geophysical surveys into a consolidated database. Re-modelling of this data has shown that a number of EM conductors have not been tested by previous drilling, with a number of holes either not hitting or only intersecting the margins of the conductor.

Additional EM conductors are also yet to be adequately tested at four other localities within the project. To date, all conductors have proven to be associated with magmatic sulphides. The surface EM coverage completed to date has been limited and has not effectively covered the project area, particularly the ultramafic basal contact zone which is a highly prospective position for the accumulation of nickel sulphides. Re-interpretation of the geology and targeting is continuing.

The initial work program will include an airborne VTEM survey to expand the EM coverage over the entire mafic-ultramafic intrusive and to test down dip, beyond the depth of the previous EM system. An RC drilling program is intended to follow to test new and existing conductors.

Cassini views the Project as an excellent opportunity to apply its geological expertise and learnings in nickel-copper systems from the West Musgrave Project to an apparently similar mineralised system with only limited modern exploration. Further, the project is conveniently located adjacent to roads and power, providing development advantages if exploration proves successful. 

The project provides Cassini with further exposure to nickel, copper and cobalt, three critical components of advanced technology and a decarbonised future.