The Paterson Range is undergoing massive exploration for the next Tier 1 copper deposit, with strong interest from Rio Tinto, FMG and Newcrest. Our tenement is adjacent to Haverion.

The Armada Prospect is located within the Paterson Province, best known for Newcrest Mining Limited’s (ASX: NCM) long established Telfer gold-copper mine, is contiguous to the gold and copper discovery by Greatland Gold Plc at Haverion and 100 km east of Metals X Ltd.’s Nifty copper mine.

The nearby Telfer deposit is located within the north-western exposure of the Palaeoproterozoic to Neoproterozoic Paterson Orogen.

The Paterson Province contains two suites of Neoproterozoic granitic intrusions that have a close spatial and possibly genetic relationship to mineralisation in the Telfer district including a 9 km thick sequence of marine sedimentary rocks known as the Yeneena Supergroup which hosts the Telfer Mining District. Two suites of Neoproterozoic granitic intrusions have a close spatial and possibly genetic relationship to mineralisation in the Telfer district.

The Company considers its Armada project to potentially host analogous gold and copper mineralisation, to that at Telfer consists of stratiform reefs and stockworks hosted by weakly deformed and metamorphosed sedimentary rocks of the Malu Formation of the Lamil Group northeast of the Camel-Tabletop Fault. The presence of abundant carbonate units, and weakly developed penetrative deformation are important attributes of the Lamil Group.

Almost all the Proterozoic basement rocks within the Armada EL have been unconformably overlain by the Early Permian Paterson Formation and in part, again, unconformably by the Jurassic to Cretaceous Callawa and Ankatell Formations.

An airborne magnetic survey covering the western 47% of the Armada tenement was flown in late November 2018. This survey has identified eight exploration targets within a 22 km radius of Havieron.


Geology and mineralisation

The nearby Telfer deposit is located within the north-western exposure of the Palaeoproterozoic to Neoproterozoic Paterson Orogen (formerly Paterson Province). The Paterson Orogen includes the Palaeoproterozoic Rudall Complex, Neoproterozoic Yeneena Supergroup (Throssell Range and Lamil Groups), and the Neoproterozoic Tarcunyah Group of the northwest Officer Basin. The Yeneena Supergroup hosts the Telfer Mining District and consists of a 9km thick sequence of marine sedimentary rocks that unconformably overlie the Palaeoproterozoic Rudall Complex.

The Yeneena Basin covers an area of approximately 24,000 km2 and consists of a middle to upper Proterozoic succession of calcareous and argillaceous siltstones, sandstones and carbonate sediments of the Yeneena Supergroup. The Yeneena Basin unconformably overlies the Pilbara Craton and the Manganese Subgroup of the Bangemall Basin on its western boundary and the Rudall Complex Inlier on a south-eastern boundary. The Yeneena Basin is unconformably overlain by the Karara Basin to the southeast, by the Savory Basin to the southwest, by unconformable Phanerozoic sediments of the Canning Basin along the northern and eastern boundaries and the Officer Basin along the south-eastern boundary.

The Telfer District is highlighted by the presence of north to northwest/south to southeast and northwest to southeast trending moderate to tight fold patterns in the Lamil Group sedimentary rocks, oriented slightly asymmetric to the southwest. These fold patterns are aligned with the Pilbara Craton and Rudall Complex boundaries respectively. In the Telfer region, the two fold patterns overprint each other and are intruded by discordant granites.

The interference of these fold patterns in the Lamil Group rocks formed doubly plunging domal structures characteristic of the Telfer district. Domes vary from tight (e.g. Tims Dome) to open and rounded (e.g. Telfer and 17 Mile Hill Domes).

The Paterson Province contains two suites of Neoproterozoic granitic intrusions that have a close spatial and possibly genetic relationship to mineralisation in the Telfer district. Intrusions are subdivided into two granite trends, the Mount Crofton to Minyari Granite trend, and the Wilki to O'Callaghans Granite trend, based upon petrographic and major element geochemical studies. These intrusions were emplaced episodically over a prolonged period ranging from approximately 600 to 650 million years.

Gold and copper mineralisation at Telfer consists of stratiform reefs and stockworks hosted by sedimentary rocks of the Malu Formation of the Lamil Group. The Lamil Group comprises relatively weakly deformed and metamorphosed Proterozoic sediment units northeast of the Camel-Tabletop Fault. The important attributes of the Lamil Group are the presence of abundant carbonate units, and weakly developed penetrative deformation.

Almost all the Proterozoic basement rocks within the Armada EL have been unconformably overlain by the Early Permian Paterson Formation and in part, again, unconformably by the Jurassic to Cretaceous Callawa and Ankatell Formations.

Armada Project regional geology

Armada Project regional geology (Source: Geological Survey 2017 WA - 1:500,000 bedrock geology) 

 

Stratigraphy

 Stratigraphy  Age  Description
 Anketell Formation
 Early Cretaceous 
Fine grained sandstone and siltstone; lesser coarse grained sandstone and conglomerate
 Callawa Formation
Jurassic to Early Cretaceous 
 Very fine grained to coarse grained sandstone and conglomerate
 UNCONFORMITY
 Paterson Formation
 Early Permian 
Conglomerate (including diamictite), sandstone, and siltstone; largely glacigene
 UNCONFORMITY
Mount Crofton Granite
650 +/- 8 Million years
Syenogranite and monzogranite
Wilki Formation
Proterozoic 
Fine to medium grained quartz sandstone; minor shale, laminated sandstone, and dolomite
Puntapunta Formation
Proterozoic 
Dolarenite interbedded with dolomite, siltstone, and shale; thinly bedded, fine to medium grained
Malu Formation incl. Telfer Member
Proterozoic 
Fine  to medium grained quartz sandstone
Isdell Formation
Proterozoic 
Thinly bedded dolomitic limestone, calcareous siltstone, and minor shale; locally sulfidic  

 

Exploration

An airborne magnetic survey covering the western 47% of the Armada tenement was flown in late November 2018. This survey consisted of 3,311 line-km with a line spacing of 100 m at a nominal flight height of 35 m and provided high quality data for geophysical consultants, Southern Geoscience, to process. The survey has identified eight targets within a 22 km radius of Havieron with these targets arbitrarily ranked on magnetic signature/structural character.

 

An initial review by Southern Geoscience Consultants has identified the following targets:

  • KAZON (Priority 1) - This magnetic unit is ~1km long, striking ~ENE-WSW, terminating against the extensive ~NNW-SSE striking magnetic unit on eastern end (directly along strike from Havieron), structural complexity striking ~ENE-WSW and ~NW-SE.
  • FERENGI (Priority 1) - A magnetic unit is ~2km long, striking ~NE-SW - curvilinear in nature, possibly along strike of KAZON structural complexity striking ~NW-SE and ~N-S (terminating eastern end of this magnetic unit?).
  • BOLIAN (Priority 1) - This magnetic unit is ~1-1.5km long. Distortion/flexure in the extensive overall ~NS striking magnetic unit (directly along strike from Havieron) from ~N-S to ~NNW-SSE, some apparent thickening or circular zonation in the magnetic unit, structural complexity striking ~NW-SE.
  • KZINTI (Priority 1) - Based on the recent detailed magnetic survey data this magnetic unit is ~1km long. Distortion/strike change in the extensive overall ~N-S striking magnetic unit (directly along strike from Havieron) from ~NE-SW to ~N-S, structural complexity striking ~NW-SE.
  • ARCADIAN (Priority 2) - Low amplitude, broader magnetic unit perhaps at deeper bedrock level, >2km length, striking ~NNE-SSW, structural complexity striking ~NE-SW and ~N-S.
  • EDOSIAN (Priority 2) - Adjacent to the tenement boundary, based on our recent detailed magnetic survey data this magnetic unit is >1km long although may extend W/NW off tenement, terminating against the extensive ~NNW-SSE striking magnetic unit on eastern side (directly along strike from Havieron), structural complexity striking ~NW-SE.
  • OCAMPA (Priority 2) - Low amplitude, linear magnetic unit perhaps at deeper bedrock level, >2km length, striking ~ENE-WSW, structural complexity striking clearly ~NE-SW and ~N-S.
  • VIDIIAN (Priority 2) - Based on the recent detailed magnetic survey data and surrounding regional magnetic data, this magnetic unit is ~3-4kms long, striking ~NW-SE, structural complexity on the western and eastern ends. Likely a SE extension of the Greatland Gold – Scally Wag linear/extended magnetic trend.

 

The results of the gravity survey suggests Southern Geoscience’s continued involvement to further assist with drill targeting and ranking of the targets to be carried out early in the first year.  The earlier aeromagnetic survey flown in November 2018 will also be extended to the east to cover the remainder of the tenement.

A staged exploration RC drilling is planned on the eight targets previously identified by Southern Geoscience airborne geophysical survey that covered only the western half of the Armada tenement. Artemis has also undertaken reprocessing of open file seismic data collected from the Moodoo seismic survey line NC87-13. This data was acquired in 1987, processed and initially interpreted to determine the hydrocarbon prospectivity of the Mesozoic sediments overlying the Proterozoic Patterson Province geology.

Since then there have been significant advances and improvements made in processing techniques which appreciably enhance and improve resolution of stratigraphy and more importantly structures. The information obtained is not expected to have direct exploration application but will provide valuable additional information on structures and thickness of cover which can be integrated with the gravity data to improve modelling of targets.

This line passes approximately 2.5km southeast of Greatland Gold’s Havieron Prospect.

Artemis will be continuing with their data compilation from historic exploration records sourced from the DMIRS WAMEX data repository and from other public documents from neighbouring projects.

 

Artemis Paterson Range aeromagnetic data

Paterson Range aeromagnetic data merged with GGP magnetic data and depicting targets

 

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