Sentinel Exploration Limited reports a virgin gold discovery: 30m @ 1.12g/t Gold from 12m in drilling results from the Company’s flagship Marda East Gold Project in Western Australia.
HIGHLIGHTS
- Shallow composite result of 30m @ 1.12g/t gold from 12m depth in drillhole 26MERC057, including:
- 3m @ 5.35g/t gold from 15m and;
- 3m @ 3.59g/t gold from 36m;
- 3m composite assays from Sentinel’s second RC drilling program at Marda East, (90km North of Southern Cross), have been received and reviewed, comprising 33 holes for 2,915m;
- Diamond drilling planned to twin the above hole and two other locations for next program.
Sentinel reports 33 holes for 2,915m of RC drilling was completed in the second drill program at Marda East, and initial 3m composite assays identified a best interval of 30m @ 1.12g/t Au from 12m depth in drillhole 26MERC057.
This interval includes two higher-grade 3m composite samples of 3m @ 5.35g/t Au from 15m and 3m @ 3.59g/t Au from 36m.
Managing Director, Simon Adams commented:
“These results from our second drilling program at Marda East represent a virgin gold discovery by Sentinel in an area with a long history of regional exploration. The Company’s two drilling campaigns have now intersected gold mineralisation across multiple holes, with ongoing technical work focused on defining the geometry, continuity and geological controls of the mineralised system.
“The best 3 composite interval identified from the second round of drilling, 30m @ 1.12g/t Au from 12m in 26MERC057 together with the other drill results to date are very encouraging and confirm a gold system to be present at the Marda East Project.
“We are taking a disciplined technical approach at Marda East. Our immediate focus is to complete the selected 1m split assays and 3 targeted diamond holes that will provide further higher-resolution data to determine the thickness, grade distribution and continuity of mineralisation.”
Table 1: Summary of reported 3m composite assay result – Marda East
Figure 1: Drill Hole Location Plan (Phase 2 Marda East) with proposed future diamond hole locations
Figure 2: Cross section of holes 26MERC055-57 from Phase 2 RC drill program
Figure 3: Cross section of holes MERC037-39 from Phase 2 RC drill program
The Phase 2 drill program at Marda East comprised 33 RC holes for 2,915m and was designed to follow up the maiden drilling program of 29 holes that was completed in late 2025 and further test selected areas of gold mineralisation.
The system at Marda East represents a virgin gold discovery for Sentinel which is quite remarkable given the extensive historical exploration that has been conducted in the area.
The reported intervals are based on 3m composite samples and is reported as downhole length, with true width not yet known. The Company has identified selected intervals, including the mineralised interval in 26MERC057, for 1m split sample assaying to advance the understanding of the thickness, grade distribution and continuity of gold mineralisation.
The 3m composite results and pending 1m split assays will be integrated with the maiden drilling results, geological logging and petrographic work to advance the understanding of this gold system.
Petrographic work has identified two major rock types which are AFG an Alkaline Feldspar Microgranite and KFG an Orthocline (K) Feldspar Microgranite with minor pyrite accessory arsenopyrite and minor quartz veining being associated with the gold mineralisation.
Sentinel will provide a further market updates as results are received and analysed.
Next Steps:
- Complete collection and submission of selected 1m split samples and receive assay results.
- Integrate 3m composite and 1m split assay data with the maiden drilling results, soil geochemistry and geological interpretation.
- Review petrographic results, lithological logging and alteration data to assist interpretation of rock types and mineralised zones.
- Prepare appropriate plan-view and/or downhole graphics.
- Three short, orientated diamond holes twinning and near to mineralised zones and structures in two of the key target areas.
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Company News Release
Date: 17 July 2026
Competent Person Statement
The information in this announcement that relates to exploration results, assay review activities and geological interpretation is based on information compiled by Mr Adam Anderson, a Competent Person who is a Member of the Australasian Institute of Mining and Metallurgy. Mr Anderson has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Anderson is a consultant to, and substantial shareholder of, the Company. Mr Anderson consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears.
Forward Looking Statements
This announcement may contain forward-looking statements, including statements relating to planned exploration activities and future work programs. Forward-looking statements are subject to risks and uncertainties, and actual results may differ materially from those expressed or implied. The Company does not undertake to update forward-looking statements except as required by law.
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Sentinel Exploration Limited’s is a newly listed Western Australian mineral exploration company with a focus on Gold, Copper and Lithium opportunities.
Listed on the National Stock Exchange of Australia under NSX: SOX, Sentinel is focused on advancing mineral discovery opportunities across its WA project portfolio.
The company’s flagship Marda East Gold Project delivered encouraging shallow gold results incl. 3m @ 8.6g/t gold with follow-up drilling a priority.
