Moolart Well.
Moolart Well, as part of the DNO, is a mesothermal gold deposit hosted dominantly in intermediate diorite intrusives but also in dolerite, basalt and to some degree ultramafic rock types. Hypogene gold mineralisation is structurally controlled in fresh rock and to a lesser extent in oxidised rock. Competency contrasts between rock types are thought to pay a major role in providing the architecture in which mineralisation occurs. The gold is associated with multiple local moderate to steep east dipping N-S striking structures. These are offset by a series of NW- SE striking post to syn-mineralisation structures which are also partly mineralised.

Deflation and lateritisation of the extant profile are responsible for accumulating a significant portion of the Moolart Well mineralisation into the overlying transported laterite regolith. Remobilisation of gold in the weathered residual profile has depleted the upper parts of the clay zone and enhanced the gold grade of the lower part of the profile in the saprock zone.

A model of the lithology and weathering was generated prior to the mineralisation domain interpretation commencing. The mineralisation geometry has a very strong relationship with the lithological interpretation and structure in both the laterite and the oxide/fresh mineralisations. The updated Reserve for Moolart Well includes numerous open pits, including the addition of three new mining areas (Buckingham, Eindhoven and Mit ........

The mining method assumed in the Ore Reserve study is the same as that currently employed at the Moolart Well Gold Mine and the Gloster Gold Mine, which utilises drill and blast, excavator and truck open pit mining. The existing pit has been designed to be developed in a series of progressive cutbacks.

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