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Parkway Minerals NL samples high grade potash at Lake Barlee

Samples were collected from shallow auger holes at Lake Barlee.
Parkway Minerals NL samples high grade potash at Lake Barlee
High values of potassium and magnesium were recorded

Parkway Minerals NL (ASX:PWN) has received the results of its initial auger sampling program on its flagship 100% owned Lake Barlee Potash Brine Project.

Significant values of both potassium and magnesium were recorded from the near surface brine and surface samples.

Parkway has engaged a hydrologist to assist with targeting the next phase of work to identify the paleo-valleys, which will aims to lead to proof-of-concept drilling.

Patrick McManus, managing director, commented: “The samples were taken from near the lake surface, after two significant rain events.

“The fact that they still registered high values of potassium and magnesium is encouraging.”

Sampling details

The sampling results suggest that potassium and magnesium in solution is present in high concentrations in the near surface brine.

Samples were collected from two areas around the central peninsula, Area 1 and Area 2.

Brine concentrations from Area 1 ranged between 1340 milligram per litre to 2430 milligrams per litre and averaged 2140 milligrams per litre.

Due to heavy rains, only a single brine sample was recovered from the auger holes at Area 2, which measured 1,530 milligrams per litre.

Lake Barlee project

The Lake Barlee project is a salt lake in mid-west region of Western Australian, north of Southern Cross.

Parkway recently secured an additional exploration license application taking its landholding for the project to 1956 square kilometres giving it the dominant landholding on the lake.

Parkway’s principal exploration target will be paleochannels within the lake that may contain concentrations of potassium, or lithium mineralisation.

Should the company’s exploration be successful, the Lake Barlee Project holds significant infrastructure advantages that could significantly reduce costs to any future operation.


These preliminary results are encouraging and the engagement of a hydrologist will assist with targeting the deeper channel sand systems.

This work is expected to include airborne and ground geophysical surveys leading to identification of sites for drilling.

Drilling will determine thickness of channel sands and concentration of potassium and other elements in the brines.

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