White Cliff Minerals : Highly Anomalous TREO Uncovered at Hines Hill REE Project

ASX ANNOUNCEMENT 5 April 2022

Highly Anomalous TREO Uncovered at Hines Hill REE

Project

HIGHLIGHTS

• ❖ Maiden reconnaissance soil sampling program at Hines Hill confirms presence of rare earths:

  • o Maximum value of 550ppm TREO

  • o 11 samples over 300ppm TREO

• ❖ The results correlate with magnetic features tentatively interpreted as possible carbonatite intrusives

  • o Interpretation of magnetic data over the tenement has identified two intrusive bodies, covering an area of ~5km2 in the northeast and ~2km2 in the southwest, respectively

  • o Carbonatite intrusives are a major source of REE deposits around the world

• ❖ The results are highly encouraging for a reconnaissance program, with the Company planning for a follow-up geochemical sampling program and gaining all approvals for a maiden AC drill program

White Cliff Minerals Limited (White Cliff or the Company) is pleased to provide an update following the reconnaissance soil sampling program as part of a first pass field trip to Hines Hill (Figure 1). In total, the Company took 81 samples, of which 11 are considered highly anomalous for rare earth elements (REE), with a peak value of 550ppm total rare earth oxide (TREO).

The results returned from roadside soil sampling along selected roads which traversed magnetic features tentatively interpreted by the Company as carbonatite intrusives. The secondary source target is clay hosted REE from supergene enrichment within the lateritic profile over the granite.

Commenting on the field trip, White Cliff Technical Director Ed Mead said:

"Clearly, we have work to do, as it is still unclear the precise source of the exciting REE results. Australian Rare Earths (ASX:AR3) recently signed a JV at Woolgangie 200km to east of us, specifically targeting clay hosted REE sourced from the underlying rocks and supergene enriched by the lateritic process. The early indications from Hines Hill may indicate similar geological conditions and sources for the rare earths.

"This also bodes well for the potential of our Diemals project area of 2,427km2, where we are targeting similar deposit styles. The team will fast-track a follow-up geochemical program for Hines Hill, which will include gaining all approvals for a maiden aircore drill program to test subsurface REE grades".

Figure 1: Li/REE Project location map in Western Australia

Hine Hill Project

The Hines Hill REE project consists of a single tenement (Figures 1 and 2), within the wheatbelt region, located about 200km east of Perth on the Great Eastern Highway. The tenement area is 128Km2 covering extensive grain growing properties.

The sampling targeted two magnetic features tentatively interpreted to be carbonatite intrusions, although they may represent differential non-carbonatite intrusives (Figure 3). The reconnaissance program indicates these do not outcrop and occupy lower areas of the topography.

Granitic and laterite outcrops form higher parts of the topography and uniformly reported lower analytical results.

Figure 2: Hines Hill (WCN 100%) Li/REE project, tenement location and sampling sites

Geochemical Results Discussion

Table 1 shows the results from samples collected from the roadside soil, rock chip and laterite sampling program, with results expressed as oxides in ppm. A simple Aqua Regia digest was used as the assay technique, which is not a full digest of

the sample, and may better indicate the more easily liberated REE component in the samples.

The elevated results also correspond precisely with the magnetic features identified in the northeast and in the southwest, strongly suggesting the two features are directly related, however additional sampling will be required to define whether this is solely co-incidental.

Analytical results (Table 1) with values >95th percent for each REO highlighted in bold, shows clear differences in component contents between the two areas The results of lithium analyses are consistent with a granitic source.

Follow-up Program

An expanded geochemical sampling program will be undertaken over the project area, along with gaining all approvals for a maiden drill program.

Figure 3: Hines Hill sampling locations overlaid on magnetic data.

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