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20231010_AMMN_Laporan Bulanan Aktivitas Eksplorasi_31447779_lamp3.pdf
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Exploration Report – Quarter 3 2023
Introduction
During the period 1st July 2023 to 30th September 2023 (Q3 2023), PT Amman Mineral Nusa Tenggara
(PT AMNT), a subsidiary of PT Amman Mineral Internasional Tbk (PT AMI), carried out exploration
activities at four IUPK Blocks in Sumbawa, Indonesia (Figure 1).
Total exploration expenditure for Q3 2023 was approximately USD $ 4.99 M.
Figure 1. PT AMNT IUPK blocks, Sumbawa, Indonesia.
Batu Hijau Block I
Expenditure:
• In pit resource drilling program costs (including core assay costs) amounted to approximately
USD $ 2.79 M.
Work areas:
• Batu Hijau Cu-Au mine.
Exploration parties:
• Manager - AMNT Mine Technical Service (MTS).
• Drilling contractor - PT Minera Nusa Drillindo (PT MND).
• Assay laboratory - Intertek Utama Service (ITS).
• Umpire assay laboratory - PT Geoservices.
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
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Assessment methods:
• Diamond coring (seven drill rigs).
Objectives:
• The aim of the on-going drill program is to improve the confidence classifications of resources
below the Batu Hijau Phase-8 pit design.
Exploration Results:
• Drill holes completed or in progress (17) amounted to 9,632.4 m for Q3 2023 (Figure 2). The
holes series was SBD806 to SBD822.
• Core samples submitted to the assay lab amounted to 2,571.
Forward Plan:
• The resource drilling program will continue in Q4 2023 using 7 to 12 diamond drill rigs.
• An update of the Batu Hijau Mineral Resource Estimate (MRE) is planned for late December.
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
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Figure 2. Batu Hijau Block I Q3 2023 – In Pit Drill Collar Locations.
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
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Elang Block II
Expenditure:
• Exploration activities included drilling, IP geophysical surveys, soil sampling and geological
mapping. Costs were circa USD $ 1.97 M.
Work Areas:
• Elang Cu-Au Project
• Sebu Gold Project
Exploration Parties:
• Manager - AMNT Exploration.
• Drilling contractor - PT Minera Nusa Drillindo (PT MND).
• Assay Laboratory (drill core, rock, soil) - Intertek Utama Service (ITS).
• Induced Polarisation (IP) geophysical survey contractor - PT Geoservices.
Assessment Methods:
• Diamond drilling (2 rigs).
• IP (dipole-dipole) geophysical surveying.
• Grid soil sampling.
• Geological mapping (including rock sampling).
• Alteration analyses using an ASD Terra Search 4 Mineral Spectrometer.
Objectives:
• Resource development drilling continued at the Elang Cu-Au deposit (Figure 3). The purpose
of this infill program was to explore information gaps, improve the geological model and
increase the confidence level of resource classifications.
• Drilling at Sebu Gold project, to the SW of the 2022 drill area, sought extensions to the known
oxide gold mineralised zone (Figure 3).
• The Sebu & Sebu East IP geophysical lines were a follow up to historical work which indicated
that a significant chargeability and resistivity anomaly continued southwards (Figure 3).
Geological mapping and grid soil sampling was also undertaken as an extension to the
historical data set.
Exploration Results:
• Elang Block diamond drilling (9 holes for 925.7 m):
o Elang Cu-Au resource infill – 1 hole for 283.5 m (DLD-566 in progress).
o Sebu oxide gold exploration – 7 holes for 420.1 m (holes series SUD-310 to SUD-316).
o Alma Cu-Au exploration – 1 hole for 222.1 m (ALD-002 in progress).
• Sebu & Sebu East IP survey - 3 lines amounting to 6,000 metres in length.
• Sebu East other:
o 67 soil samples were submitted to the lab.
o 138 rock samples were submitted to the lab.
Forward Plan:
• Resource definition and exploration diamond drilling (3 rigs) will continue in Q4 2023 at Elang
and the Alma Cu-Au Porphyry target.
• An update of the Sebu Mineral Resource Estimate (MRE) is planned for late October.
• An update of the Elang Mineral Resource Estimate (MRE) is planned for late December.
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
T +6221 25546700 F +6221 5794 4592
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Figure 3. Elang Block II Q3 2023 - Exploration Locations.
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
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Rinti Block III
Expenditure:
• Geological mapping, rock sample assaying and drill program preparation. Costs were circa USD
$ 123 k.
Work Areas:
• Rinti Cu-Au Project.
Exploration Parties:
• Manager - AMNT Exploration.
• Assay Laboratory (rocks) - Intertek Utama Service (ITS).
Assessment Method:
• Drill sites were selected after target generation studies based upon 2022 drilling results,
reviews of geophysical results (Aeromagnetics, HoisTEM, IP), geological mapping and
alteration mineral analyses (Figure 4).
• A geological mapping program was undertaken over the SE Rinti (Kokar Beringin) HoisTEM
resistivity anomaly (Figure 4).
Objectives:
• The aim of the SE Rinti mapping program is to test a new area and assess if the resistivity
anomaly is associate with Cu-Au mineralisation.
Exploration Results:
• A total of 48 rock samples were submitted to the lab for analyses during the SE Rinti geological
mapping program.
Forward Plan:
• An exploration drilling program, targeting Cu-Au porphyry mineralisation, will commence in
Q4 2023 using 1 rig.
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
T +6221 25546700 F +6221 5794 4592
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Figure 4. Rinti Block III Q3 2023 - Exploration Locations.
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
T +6221 25546700 F +6221 5794 4592
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Lampui Block IV
Expenditure:
• Exploration activities included IP geophysical surveys, soil sampling and geological mapping.
Costs were circa USD $ 102 k.
Work Areas:
• Lampui Cu-Au Project.
Exploration Parties:
• Manager - AMNT Exploration.
• IP geophysical survey contractor - PT Geoservices.
• Assay Laboratory (rock and soil) - Intertek Utama Service (ITS).
Assessment Methods:
• IP (dipole-dipole) geophysical surveying.
• Grid (100 m x 100 m) soil sampling.
• Geological mapping (including rock sampling).
• Alteration analyses using an ASD Terra Search 4 Mineral Spectrometer.
Objectives:
• The objective of the integrated IP, soil & mapping programs was to test the porphyry Cu-Au
potential of the North Lampui and Central Lampui targets.
Exploration Results:
• IP geophysical surveying – 3 lines totaling 4,500 m.
• Soil program – 137 samples submitted to the lab for analyses.
• Geological mapping – 25 rock samples submitted to the lab for analyses.
Forward Plan:
• No activities planned for Q4 2023.
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
T +6221 25546700 F +6221 5794 4592
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Figure 5. Lampui Block IV Q3 2023 - Exploration Locations
PT Amman Mineral Internasional Tbk.
Menara Karya 6th Level Jalan H.R. Rasuna Said Blok X-5 Kav. 1-2 Jakarta 12950
T +6221 25546700 F +6221 5794 4592
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