Errawarra Resources identifies large pegmatite swarm at Andover West

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By Imelda Cotton - 
Errawarra Resources ASX ERW pegmatite swarm Andover West

Critical minerals explorer Errawarra Resources (ASX: ERW) has identified a large stacked pegmatite swarm at its Andover West project in Western Australia.

The swarm measures approximately 1.6 kilometres by 1km along a highly-anomalous soil trend with peak lithium oxide values of 325 parts per million.

A series of stacked, low-angle, north-dipping pegmatite packages have been mapped and a second anomalous trend peaking at 299ppm lithium oxide has also been highlighted in the north-west area of the project.

The soil trends are along the strike of a lithium pegmatite discovery by Raiden Resources (ASX: RDN) that reported rock chips grading at 3.8% lithium oxide.

The swarm is adjacent to the Andover project owned by Azure Minerals (ASX: AZS).

Fertile zones

Errawarra’s executive chair Thomas Reddicliffe said the company was excited by the discovery of the large pegmatite swarm.

“We may have only hit the tip of the iceberg with the lithium-fertile zones in these pegmatite packages,” he said.

“Elevated soil anomalies can point towards lithium-bearing pegmatites under cover and potentially larger ones sub-surface.”

“We are keen to complete our ground reconnaissance and mapping as quickly as possible to enable the drilling of selected targets.”

“Being along strike and in proximity to Raiden’s discovery, we are optimistic about our chances.”

Heritage clearances

Heritage clearances over selected portions of the anomalous lithium zones, including the stacked pegmatite packages mapped in the northwest and east of the project, are expected by month’s end.

Mr Reddicliffe said this would clear the way for drilling to begin before the end of this quarter.

Pinderi Hills JV

In April, Errawarra formed a joint venture (JV) with UK-based Alien Metals relating to lithium rights on the Pinderi Hills project in WA’s west Pilbara region.

Alien holds tenements in the area where lithium-caesium-tantalum (LCT) pegmatite targets have been identified in greenstone mafic-ultramafic rocks near “hot” granites.

These same granites are associated with lithium pegmatite emplacement in a mineralised corridor located 20km to the north.

A large number of geomorphic features have been identified in the Maitland Intrusive Complex and are interpreted to be possible pegmatite dyke swarms.

They appear comparable to LCT pegmatites within the Andover Intrusive Complex located 35km to the north-east.

Errawarra’s exploration teams have been mobilised to the project area to commence initial reconnaissance exploration.