20251010_AMMN_Laporan Bulanan Aktivitas Eksplorasi_31966635_lamp3.pdf

Batu Hijau Block I

No exploration field work or costs incurred in Q3 2025.

Forward Plan:
   • Review of previous exploration results.




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Elang Block II

Expenditure:
   • Exploration activities included drilling and geological mapping. Costs were circa USD $
      2.34 M.

Work Areas:
   • Elang Cu-Au Project.
   • Gerbang East Cu-Au Project.
   • Sebu East Cu-Au Project.
   • Elang waste dump plan area.

Exploration Parties:
   • Manager - AMNT Exploration.
   • Drilling contractor - PT Minera Nusa Drillindo (PT MND).
   • Assay Laboratory (drill core, rock) - Intertek Utama Service (ITS).

Assessment Methods:
   • Diamond drilling (3 rigs).
   • Geological mapping and soil sampling.
   • Alteration analyses using an ASD TerraSpec 4 Mineral Spectrometer.

Objectives:
   • Resource development drilling continued at the Elang Cu-Au deposit (Figure 2). The
       purpose of this infill program was to address data gaps, refine the geological model, and
       enhance the confidence level of mineral resource classifications.
   • Exploration drilling at Gerbang East is targeting the Cu-Au porphyry mineralisation
       potential below a lithocap and diatreme breccias (Figure 2).
   • Exploration drilling at Sebu East was conducted as a follow-up to the Q2 IP survey results
       and previous drilling result.
   • Geological mapping and grid soil sampling were conducted along the Sebu East IP survey
       lines. The objective is to delineate the extent of the surficial Cu-Au geochemical
       anomalies and to define new drill targets.
   • Sterilisation drilling and geological mapping in the proposed Elang waste dump area were
       carried out to ensure that no economically viable mineralisation is present beneath or
       surrounding the planned dump site.

Exploration Results:
   • Elang Cu-Au project diamond drilling (19 holes for 5,722.7 m):
           o Resource infill, Elang - 10 holes (3,423.5 m) completed or in progress,
           o Exploration drilling, Gerbang East - 6 holes (1,187.9 m) completed or in
               progress,
           o Exploration drilling, Sebu East - 1 hole (839.0 m) in progress,
           o Sterilisation holes at Elang waste dump plan - 2 holes (272.3 m) completed or in
               progress.
   • Core samples submitted to the assay lab amounted to 1,841.
   • Geological mapping program – 128 soil samples from Sebu East were submitted to the
       lab.




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Forward Plan:
   • Continue resource drilling at Elang, exploration drilling at Gerbang East, exploration
      drilling at Sebu East and sterilisation drilling using 5 rigs.




                  Figure 2. Elang Block II Q3 2025 – Exploration Locations.




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Rinti Block III

Expenditure:
   • Exploration activities included IP Survey data acquisition and geological mapping. Costs
      were circa USD $ 351 K

Work Areas:
   • Rinti Cu-Au Project.

Exploration Parties:
   • Manager - AMNT Exploration.
   • Geophysical survey contractor – PT Geoservices

Assessment Methods:
   • IP (Induced Polarization) Survey - resistivity and chargeability.
   • Geological mapping

Objective:
   • The IP survey will investigate a lithocap system in the southern part of Rinti. This program
       aims to identify the potential presence of an underlying Cu-Au porphyry system beneath
       the lithocap and assist in determining the drilling targets (Figure 3).
   • Detailed geological mapping was conducted at Rinti area with the objective of following
       up on the IP geophysical survey results, particularly to identify surface geological
       expressions corresponding to the IP anomalies.

Exploration Result:
   • IP Survey acquisition – 8 lines (11.35 km) completed.
   • Geological mapping program – 25 rock samples from Rinti were submitted to the lab.

Forward Plan:
   • Exploration drilling (1 rig) at lithocap zone and high IP anomalies.




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Figure 3. Rinti Block III Q3 2025 – Exploration Locations.




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Lampui Block IV

No exploration field work or costs incurred in Q3 2025.

Forward Plan:
   • Review of previous exploration results




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