• GreenTech’s ground reconnaissance uncovers more lithium pegmatite zones at the Osborne JV
  • Rock chip sampling defines new Wally and Maddox zones over more than 1km with outcrops up to 100m wide
  • More mapping and sampling under way over the next two weeks


GreenTech – one of the hottest explorers of 2023 – has identified multiple and extensive lithium pegmatite zones at its Azure-adjacent Osborne joint venture in the Pilbara.

The Osborne JV with Artemis Resources (ASX:ARV), which the company was spun-out from in January 2022, is within throwing distance from Azure Minerals’ (ASX:AZS) exciting Andover discovery which features multiple +100m high-grade lithium hits.

A initial ground reconnaissance program and digging through available historical data led to GreenTech Metals (ASX:GRE) uncovering evidence of lithium bearing rocks over its ground.

These include the Northern lithium-caesium-tantalum (LCT) pegmatite, which includes the Kobe prospect, that sits within the company’s 100% owned Ruth Well project tenements and extends eastward into the Osborne JV tenements where previous rock chip samples have returned assay results of up to 1.8% Li2O.

Additionally, reconnaissance rock chip samples returned lithium grades of up to 3.6% Li2O in the Southern LCT trend, which has been mapped over a strike length of 2.5km in the Osborne JV.


GreenTech Metals ASX GRE
Location of the new lithium pegmatite zones. Pic: Supplied (GRE).


New lithium zones extend mineralised strike beyond 11km

Outcrop mapping and rock chip sampling across the Osborne JV project, which returned up to 2.4% Li2O, has now confirmed the discovery of new occurrences of lithium bearing pegmatites – the Wally, Osborne and Maddox zones – that correlate with a number of lithium soil anomalies and regional structures.

Notably, the recently discovered Wally and Maddox zones have been defined over strikes of more than 1km, which takes the total mineralised strike up to more than 11km, with some outcrops being up to 100m wide.

GreenTech’s mapping has now identified nine broad lithium soil anomalous zones across 32km2 with another 60km2 of the licence package still to be mapped.

Importantly, several of these target areas – along with the Kobe and Osborne zones – have the potential to support significant occurrences of lithium bearing pegmatites.


Forward work program

The company expects to complete its first pass mapping and sampling program in the next two weeks.

It will follow these up with several programs to:

  • Increase density of sampling across current known pegmatite zones;
  • Optimise sampling methods to target higher grade lithium zones; and
  • Continue and extend mapping to determine the full extent of known pegmatite zones.

The maiden drill program is to test the zones is likely to take place in October or early November.

GreenTech has also acquired high resolution satellite imagery to further assist in identifying pegmatite zones whilst preparations are under way relating to regulatory requirements to enable the undertaking of a maiden drilling program.



This article was developed in collaboration with GreenTech Metals, 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.