The Marymia project is located approximately 900 km north of Perth and 170 km north of Meekatharra within the Archaean Marymia Inlier. The Marymia project is situated 40 km east of the Plutonic Gold Mine, 20 km southeast of the Marymia gold camp, and 55 km northeast of Sandfire Resource’s Degrussa copper mine.
The Marymia project is most prospective for orogenic gold, nickel sulphide and volcanic massive sulphide (VMS) copper-gold mineralisation.
Norwest plans to RC drill two high-priority targets at its Marymia project prior to the end of the 2018 calendar year.
The first target is an untested 400m by 200m magnetic anomaly located within the same geological setting and less than 1 km north of recent air-core drilling. This feature has a similar magnetic intensity as the Dixon prospect and is potentially coincident with the mafic-felsic volcanoclastic contact mapped from recent air-core work. Due to the thick transported cover in the area, Norwest has planned a number of holes utilising an RC rig to test this anomaly.
The second is a Volcanogenic Massive Sulphide (VMS) target highlighted by a March 2018 geochemical surface sampling programme carried out across the Proterozoic basin-Jenkins fault contact in the northern tenement area. Over 500 soil samples were collected in tightly spaced geochemical sampling program undertaken within the West Soils areas to identify potential VMS base metal mineralisation.
The sampling in the West Soils area defined a high-level copper-zinc-lead anomaly. The tight distribution of the lead (Pb) along recognised geological features with coincident anomalous values from rock chip samples collected from gossans (in-situ) indicates that this soil anomaly may be due to underlying bedrock mineralisation. This may be supported by drill hole MMRC003 that intersected 21m @ 0.05% copper and 0.21% zinc from 193m. Given the association of economically significant elements with outcropping gossan this anomaly represents a high priority RC drill target for VMS style base metal mineralisation. (AUZ:ASX Announcement, 22 August 2018, “Norwest continues pursuit of gold & VMS targets at Marymia”)
Additional assessment of the Dixon prospect will include drill testing for deeper gold mineralisation in prospective areas to determine if, like the Plutonic Gold Mine, the gold tenor improves at depth.
In the longer-term Norwest will assess the numerous historical prospects within the project area that have been for the most-part ineffectively explored due to the masking of potential bedrock mineralisation by the thick transported material covering much of the project area.