22 Impact Minerals Ltd Annual Report 2023 Review of Operations continued Figure 19. Combined response ratios for gold-palladium-magnesium plotted on an image of the regional magnetic data (more magnetic units in warmer colours) and showing a coherent anomaly about 500 metres in diameter. The elevated magnesium responses show a strong correlation to elevated REE responses. This area has not been field checked. 2. GOLD A discrete gold-palladium-in-soil anomaly about 500 metres in diameter has been identified in the central part of the Beau project (Figure 19). The responses for both metals are moderate and are associated with strong magnesium responses. Although not discussed here, magnesium is strongly correlated with REE elements in the soil geochemistry data and together these suggest the responses may be related to an alkaline intrusion. The area has not been field checked and this is a priority area for further work. 2. GOLD A discrete gold-palladium-in-soil anomaly about 500 metres in diameter has been identified in the central part of the Beau project (Figure 5). The responses for both metals are moderate and are associated with strong magnesium responses. Although not discussed here, magnesium is strongly correlated with REE elements in the soil geochemistry data and together these suggest the responses may be related to an alkaline intrusion. The area has not been field checked and this is a priority area for further work. Figure 5. Combined response ratios for gold-palladium-magnesium plotted on an image of the regional magnetic data (more magnetic units in warmer colours) and showing a coherent anomaly about 500 metres in diameter. The elevated magnesium responses show a strong correlation to elevated REE responses. This area has not been field checked. 3. LITHIUM-CAESIUM-TANTALUM Two large irregular shaped soil anomalies each about 1 kilometre in dimension with modest to strong response ratios for lithium-caesium-tantalum have been identified in the north east and central parts of the Beau project. As well as these three metals, there are also variable responses for the associated metals beryllium and niobium and additive response ratios for all five metals are shown in Figure 6. Particularly strong responses occur on Traverse C (Figure 6 and Figure 7). These five metals commonly form part of a zoned system of pegmatites in a widely used model for exploration for lithium-dominant pegmatites (Figure 8). Responses for the individual metals do vary significantly within the two areas identified, but together the responses are permissive of a large zoned pegmatite system. There are indications of such zonation along Traverse C (Figure 7). Of note, the southern anomaly also partly rings the gold-palladium anomaly, suggesting a possible genetic relationship. Both of the geochemical anomalies occur in areas of poor outcrop and extensive laterite and require detailed field checking and possible infill soil geochemistry samples to better define any possible zonation. Figure 6. Combined response ratios for lithium-caesium-tantalum-beryllium-niobium plotted on an image of the regional magnetic data (more magnetic units in warmer colours). These areas have not been field checked. Traverse C 3. LITHIUM-CAESIUMTANTALUM Two large irregular shaped soil anomalies each about 1 kilometre in dimension with modest to strong response ratios for lithium-caesiumtantalum have been identified in the north east and central parts of the Beau project. As well as these three metals, there are also variable responses for the associated metals beryllium and niobium and additive response ratios for all five metals are shown in Figure 20. Particularly strong responses occur on Traverse C (Figure 20 and Figure 21). These five metals commonly form part of a zoned system of pegmatites in a widely used model for exploration for lithium-dominant pegmatites (Figure 22). Responses for the individual metals do vary significantly within the two areas identified, but together the responses are permissive of a large zoned pegmatite system. There are indications of such zonation along Traverse C (Figure 21). Of note, the southern anomaly also partly rings the gold-palladium anomaly, suggesting a possible genetic relationship. Both of the geochemical anomalies occur in areas of poor outcrop and extensive laterite and require detailed field checking and possible infill soil geochemistry samples to better define any possible zonation. Figure 20. Combined response ratios for lithium-caesium-tantalum-beryllium-niobium plotted on an image of the regional magnetic data (more magnetic units in warmer colours). These areas have not been field checked.
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