Moho’s belief that the Black Swan South prospect is under-explored has received some validation with a review of historical data uncovering potential for nickel sulphide mineralisation.

Black Swan South is a zone of ultramafic rocks identified from historical drilling about 4.3km south of the Black Swan nickel mine that is associated with a prominent, elliptical shaped magnetic anomaly, about 600m long and bound on its western side by an interpreted major, northwest trending structure.

The review of historical assay data has now identified geochemical targets prospective for nickel sulphide mineralisation for drill testing.

Moho Resources (ASX:MOH) has also mapped out a basal contact of ultramafic rocks overlying mainly basalts over 700m in a southwesterly direction.

“Moho considers that the Black Swan South nickel prospect is under-explored, given this positive outcome from the geochemical review and that most historical drill holes terminated at less than 80m below surface,” managing director Shane Sadleir said.

“We are looking forward to the upcoming RC drill program that will test these anomalies as soon as possible.”

Review findings

The review identified potential nickel sulphide hosts on three drill sections.

Section 6632900 is the most northerly of the targets with nickel-copper-zinc anomalism peaking in regolith close to the basal contact of an ultramafic.

The strong nickel-copper-zinc anomalism was noted in Section 6632760, which contains na historical diamond drill hole.

This anomalism is supported by weaker more diffuse anomalism in upper regolith while chromium data indicates the presence of two ultramafic flows.

At Section 6632570, subtle indications of sulphides are a result of elevated copper levels just above basal contact while elevated arsenic values in the basal 8m of the ultramafic indicate that this area is weakly sulphide bearing.

Exploration plans

Moho intends to carry out about 1,800m of reverse circulation drilling to test and validate the basal contact of the interpreted ultramafic contact present on E27/623.

This will be followed by geochemical interpretation of the RC drill chips, down-hole electromagnetic surveying of selected holes, and a ground EM survey over the magnetic anomaly to assess potential for further nickel targets.

The company will then carry out diamond drilling to test the historical off-hole EM target.




This article was developed in collaboration with Moho Resources, a Stockhead advertiser at the time of publishing.


This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.