Overview
| Stage | Preliminary Economic Assessment |
| Mine Type | In-Situ |
| Commodities |
|
| Mining Method |
|
On August 4, 2023, McGrathNicol Restructuring announced that Rob Brauer, Jason Preston and Rob Kirman were appointed Receivers and Managers of Kalium Lakes on the evening of 3 August 2023 (Receivers).
The appointment of the Receivers followed the directors’ decision to appoint Martin Jones, Matthew Woods and Clint Joseph from KPMG as voluntary administrators (Administrators) to Kalium Lakes on 3 August 2023.
The Receivers have assumed control of Kalium Lakes’ operations which will continue on a business as usual basis while an urgent assessment of the options for the sale and/or recapitalisation of the Group is undertaken. |
Source:
p. 32
The Carnegie Joint Venture (CJV) is considering the exploration and development of the Carnegie Potash Project (CPP) in Western Australia, which is located approximately 220 kilometres east-north-east of Wiluna. The CJV is a Joint Venture between Kalium Lakes (KLL, 70% Interest) and BCI Minerals (BCI, 30% interest). Under the terms of the agreement BCI can earn up to a 50% interest in the CJV by predominantly sole-funding exploration and development expenditure across several stages. KLL is the manager of the CJV.
Contractors
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Summary:
The Lake Carnegie Potash Deposit is a brine, containing the target potassium and sulphate ions that could form a potassium sulphate salt. It has potential for potash mineralisation with a wide range of exploration targets from shallow brine within the lake sediments to deeper brine horizons in the palaeochannel basal sand aquifer. Advisian name five different prospective exploration targets for obtaining brine supplies associated with the Lake Carnegie project, which include:
• Evaporite sand layers in the lake sediments;
• A minor aquifer associated with alluvial and colluvial deposits;
• A sandy horizon at top of palaeochannel stratigraphy;
• Basal palaeochannel sand; and
• Fractured-rock aquifers at the southern and northern edges of the lake.
Lake Carnegie is part of an extensive palaeodrainage system that was active in the area until the middle Miocene. The palaeodrainages are infilled with a basal palaeochannel sand that is overlain by dense plasticine clay, and a variable thickness of alluvium and colluvium. Numerous tributaries incising the Earaheedy Group and draining towards Lakes Carnegie and Wells were once connected to this system and are now represented by calcrete-rich valley floors, and isolated areas of playas and associated material.
There are also a wide range of weathering profiles and weathering products derived from the basement lithologies, as well as associated with the deposition of the lake systems. Vall ........
Summary:
There are two principal methods applicable to extract the brine from the surrounding sediments:
• pumping from wells in the basal sands (lower aquifer) plus leakage from potential brine bearing segments within the clays;
• pumping from trenches inside the alluvial sediments (upper aquifer).
It is likely that both methods will be used because of the properties of the different aquifers. The design of the bore field will be based on the brine demand and aquifer conditions.
Flow Sheet:
Summary:
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Reserves at October 8, 2020:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Inferred
|
302 M cu.m
|
Sulfate of potash (SOP)
|
|
2.2 Mt
|
|
Inferred
|
302 M cu.m
|
Potassium
|
3200 mg/L
|
1 Mt
|
Source:
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