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Bonanza Gold and Antimony Grades Confirmed at Langdons

Siren Gold Limited (ASX: SNG) (Siren or the Company) is pleased to provide an update on its Langdons Prospect.


Siren’s maiden fieldwork at the Langdons prospect has recorded bonanza gold and antimony grades at surface of up to 506g/t Au and 9.3% Sb.Langdons is a more recent tenement application and contains a number of high-grade Au-Sb reefs, that were mined historically with a recovered grade of 60g/t Au.Early reported historical mining grades at Langdon were up to 2,610g/t Au and 1,120g/t Ag.A trench across the Liberty reef 300m along strike from the historic Langdons’ antimony mine returned 1.75m @ 4.5g/t Au.Anomalous gold, stibnite and arsenic soil geochemistry extends over an additional 400m of strike length with several mapped quartz reefs.The high grade system extends to the edge of the overlying cover and it is expected that the mineralisation will continue under the cover.

Executive Chairman Brian Rodan commented:

“These bonanza results confirm high grade gold and antimony mineralisation at Langdons and importantly, complement the existing high-grade gold and antimony Resource at Auld Creek.

This fieldwork confirms Langdons has the potential to be a second high grade gold and antimony project at Reefton and demonstrates the significant potential of antimony and gold mineralisation throughout the entire Reefton field”.


The Langdons prospecting permit (PP 60893) is located in the Paporoa goldfield, approximately 50km SW of Reefton (Figure 1). The Greenland Group rocks that host the mineralisation in the Reefton goldfield also outcrop in a NE trending belt, 25kms to the west. This belt of Greenland Group rocks hosts the historical Langdons and Croesus gold and antimony mines (Figure 2).

The reefs in the Paporoa goldfield strike WNW-ESE and dip shallowly to moderately to the north and south. This differs from the Reefton Goldfield where the reefs strike N-S. In both instances the reefs are parallel to the fold axis, indicating that the Paparoa block has been rotated ~90o.

The Langdons PP area contains a relatively small exposure (5kms long by 1km wide block) of the Greenland Group, which is unconformably overlain by late cretaceous Paporoa Coal Measures that host a number of open cut coal mines approximately 65kms to the north (Figure 3).

The unconformity surface is exposed at the head of the west branch of Langdons Creek and dips to the SW at 20-30o sub-parallel to the regional dip of the coal measures and topography. Greenland Group rocks are exposed to the NW of the unconformity and indicate that the sediments may only be a thin veneer overlying the Greenland Group.

The main targets within the PP are a number of outcropping reefs at Langdons (Figure 4), but other mineralised Greenland Group rocks could be hidden under the cover to the west.

The prospecting permit was granted for two years on 25 May 2023 and the Department of Conservation (DoC) granted access on 1 November 2023.

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