News: Segue Resources completes one of largest gravity surveys in Fraser Range

Segue Resources (ASX:SEG) has completed one of the largest gravity surveys undertaken in the Fraser Range at its Plumridge Nickel Project that will generate a suite of high priority exploration targets.

The nickel-sulphide targets are expected to be generated by mid-May, each with a tailored follow-up work program planned for subsequent execution.

The gravity data has been sent to Segue’s geophysical consultants for processing and will be combined with magnetic data for integrated 3D inversion modelling.

“Preliminary data has demonstrated the survey’s effectiveness in identifying project-scale deeper structures not evident in the magnetic data or regional (government) gravity data,” managing director Steven Michael said.

“This information has significantly enhanced Segue’s understanding of the Plumridge Nickel Project, with a suite of high priority exploration targets expected to be generated from 3D inversion modelling of gravity and magnetic datasets by mid-May.”


Recent Activity

Preliminary modelling has already confirmed a major gravity high that “under-plates” the Plumridge Project with a geometry suggesting the presence of crustal scale dislocations which may represent mantle tapping structures.

Several near-surface dense bodies are linked to deeper dense bodies by discordant pipe-shaped features which are interpreted to represent feeder zones between mafic to ultramafic magma chambers.

The combined gravity and magnetic modelling has identified a major zone of complexity which is interpreted as a Transfer Graben Zone (TGZ) forming a north-west trending corridor containing faults which cross-cut the main magnetic stratigraphy of the Fraser Complex.

Prior to completing the gravity survey, Segue’s only exploration work carried out in tenement E39/1731 was at the E21 Target.

The TGZ lies to the west of the E21 Target and was not part of Segue’s first phase of exploration in 2014.

The completed regional gravity survey extends approximately 20 kilometres further north than the preliminary model and shows the interpreted continuation of the western parallel gravity high off the TGZ through Segue’s tenements E39/1710 and E39/1709.

Minimal exploration work has been conducted to date on these two tenements.


Plumridge Nickel Project

Segue controls about 3,100 square kilometres of contiguous granted exploration licences at Plumridge.

Significantly, it recently acquired its minority joint venture partner’s interest in the Plumridge East Joint Venture, which contains the E21 priority exploration target.

In November, drilling at the E21 Target identified the presence of mafic-ultramafic rocks that host magmatic iron-rich sulphides.

These are interpreted to potentially be part of a larger intrusive system.

All assay data has now been returned, confirming the magmatic sulphides are predominantly pyrrhotite and pyrite, with minor chalcopyrite.


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