Titan

Titan finds ‘significant’ chalcopyrite-molybdenum-pyrite veins at Linderos Project, Ecuador

Titan Minerals (ASX:TTM) reports it has intersected ‘significant’ intervals of disseminated chalcopyrite-molybdenum-pyrite mineralised porphyritic diorite intersections during a maiden drilling program at the Copper Ridge Porphyry and prospect, at the Linderos Project located in South Ecuador.

The first diamond drillhole CRDD22-001 in the maiden program at the company’s Copper Ridge Prospect has been completed to a depth of 530m.

The second diamond drillhole CRDD22-002 is in progress at a depth of 512.87m.

Titan is ‘extremely encouraged’ by the long intervals of porphyry style chalcopyrite-pyrite-molybdenite mineralisation observed in these first holes at the Copper Ridge prospect.

Systematic logging of key geological features such as lithology, alteration, sulphide mineralogy, vein style and abundance is leading to a greatly improved understanding of the controls, and potential scale, of the porphyry mineral system being targeted.

Lithological units identified by surface mapping and in diamond drilling are described below from oldest to the youngest

  • Andesites (Celica Formation)- dark grey colour, aphanitic texture
  • Tonalite porphyry (former granodiorite)- stocks as extensions from the Tangula Batholith characterised by light grey colour and porphyritic texture, contains “quartz eye” phenocrysts in a microcrystalline groundmass.
  • Diorite porphyry dykes- fine grained porphyritic texture, composed of phenocrysts in aphanitic groundmass.

Alteration types observed include potassic, phyllic, and intermediate argillic, with several phases of alteration overprinting evident in drill core.

Potassic alteration (biotite- K feldspar-quartz) is pervasive affecting diorite porphyry and andesites. Phyllic alteration (quartz-sericite-pyrite) is seen to overprint the potassic alteration assemblage.

Intermediate argillic alteration (chlorite-smectite-illite ± carbonates), is pervasive and occurs as veins, overprinting former phyllic and potassic alteration.

Sulphide mineralisation observed at Copper Ridge includes chalcopyrite, pyrite, molybdenum and pyrrhotite, and these observed are both disseminated in groundmass and within quartz veinlets.

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A hand held portable XRF instrument has been used to verify the visual estimates of sulphide minerals.

Disseminated chalcopyrite is observed to replace mafic minerals, with estimates ranging between 1% to 2% by volume, and chalcopyrite also occurs as fine accumulations in relict patches of potassic alteration, ranging between 3% to 5% in zones of phyllic alteration, and as veinlets of chalcopyrite ± pyrite, ranging from 1% to 2%.

Disseminated molybdenite (mo) is observed in groundmass, ranging 1% to 2% by volume as also present in B-type quartz veinlets (5% mo, 95% quartz) as sutures and in the margins to these veins.

Pyrrhotite is disseminated, ranging between 1% to 2% by volume, replacing mafic minerals and zones of potassic alteration.

Titan Executive Director and CEO Matthew Carr said the company is very pleased with the progress, and the drilling is running smoothly.

“We are approximately one third of the way through our initial drilling program at Copper Ridge.

“It is highly encouraging that observations by our experienced geologists note long intervals of altered and stock-work veined porphyry with chalcopyrite, molybdenum and pyrite of the likes typical in porphyry copper deposits”

It is highly encouraging that observations by our experienced geologists note long intervals of altered and stock-work veined porphyry with chalcopyrite, molybdenum and pyrite of the likes typical in porphyry copper deposits.

We eagerly await the assay results. Meanwhile, our drilling continues at the Copper Ridge Porphyry and Meseta Gold prospects.”

Titan does caution that at this stage visual estimates of sulphide mineral abundances are provided as a guide only, and are not considered a proxy or substitute for laboratory analyses.

Quantitative confirmation of sulphide mineral percentages will be confirmed by multi-element laboratory analysis, with assay results anticipated in the coming 6 to 8 weeks.

Veining observed in drilling is described as follows:

  • Stockworks of coarse milky quartz veinlets, massive texture 2% to 20% by volume, and 5mm to 30mm wide.
  • Isolated sulphides veinlets, ± 2% by volume, 2mm wide, composed of variable amounts of pyrite and chalcopyrite.
  • A-type quartz veinlets, usually as stockwork arrays, massive texture, translucent, grey colour, 1% to 2% by volume and 2m to 6mm wide.
  • B-type quartz veinlets, occurring as isolated veinlets, massive texture,  translucent, grey colour, 1% to 2% volume and 2mm to 6mm wide. Veinlets are filled by quartz 95% and mo 5%.
  • D-type quartz veinlets, characterised by isolated and sheeted arrays, massive texture, ± 1% volume, 3mm wide. Fillings of pyrite 95%, quartz 2%, carbonates 2% with sericite-chlorite halos.

Vein volume estimation is routinely recorded along 2m intervals in the drillcore, to provide a consistent methodology and dataset for quartz vein abundance estimation.

Quartz vein abundance contours can be used to define the borders of porphyry intrusions, with increasing quartz vein abundance commonly correlating with an increase in chalcopyrite and molybdenite mineralisation, as is typically observed in large-scale porphyry deposits.

The Linderos Project is located 20km southwest of Titan’s flagship Dynasty Gold Project and comprises 4 contiguous concessions totalling over 143km-square located near the Peruvian border in southern Ecuador’s Loja Province.

Located in a major flexture of the Andean Terrane, the Linderos Project is situated within a corridor of mineralisation extending from Peru through northern Ecuador that is associated with early to late Miocene aged intrusions.

The majority of porphyry copper and epithermal gold deposits in southern Ecuador are associated with magmatism in this age range, with a number of these younger intrusions located along the margin of the extensive Cretaceous aged Tangula Batholith forming a favourable structural and metallogenic corridor for intrusion activity where Titan minerals holds a significant land position in southern Ecuador.

The Copper Ridge Porphyry prospect features surface copper-molybdenum anomalism highlighted by channel and soil sampling recently completed by Titan.

Mapping has confirmed that copper-molybdenum mineralisation is centred on dioritic porphyry intrusions approximately 1km in diameter, with these porphyritic intrusions also containing abundant mineralised quartz veining and copper oxide mineralisation at surface.

A copper-gold mineralisation event has been identified as a separate and later mineralisation event, crosscutting the copper-molybdenum east-west trend.

The further drilling exploration will aim to follow this gold trend at depth. An initial five diamond drillhole program is underway to test the Copper Ridge porphyry prospect.

A total of 2,500m of diamond drilling has been designed to a nominal depth of 500m to test the copper-molybdenum porphyry system.

Drilling is aimed at intersecting the earlier, better mineralised porphyry, observed as xenoliths in inter-mineral mineralised porphyries logged in the historical drill core.

Key parameters used for drill design were structural framework, porphyry intrusion chronology (i.e porphyry phases), quartz vein abundance, airborne magnetics and radiometrics, and soil and channel sample geochemistry.

Once this initial campaign of drilling has been completed and results compiled, Titan will be ‘well positioned’ to design additional follow up drilling.

Titan Minerals is an exploration and development company focused on exploring and developing potential Tier One projects in Ecuador’s southern Andean copper-gold belt.

Its projects include the Dynasty Gold Project, the Copper Duke Project and the Linderos Project.

Images: Titan Minerals Limited
Written By Harry Mulholland
Hailing from the Central Coast region of NSW, Harry is a passionate journalist with a background in print, radio and ESG news. When not bashing away on his keyboard, he can be found brewing a coffee or playing with his dog.