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Update on Merger with Polymetals - Notice of Meeting

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BDO CORPORATE FINANCE (WA) PTY LTD<br />

<strong>Polymetals</strong> Mining Limited and Southern Cross Goldfields Limited<br />

Technical Specialist's Report<br />

Figure 3.6<br />

Locati<strong>on</strong> <strong>of</strong> Turner River Explorati<strong>on</strong> Licence<br />

3.2.1 Geology<br />

The Turner River Gold projects are in the Archaean-Proterozoic Pilbara Crat<strong>on</strong>. North-east-trending<br />

greenst<strong>on</strong>es (mafic to ultramafic intrusives, intermediate to felsic volcanic, layered mafic to ultramafic<br />

intrusi<strong>on</strong>s and sediments (shales, banded ir<strong>on</strong>st<strong>on</strong>es and cherts)) wrap around granitic inliers.<br />

The greenst<strong>on</strong>e successi<strong>on</strong> comprises the Warrawo<strong>on</strong>a Group, the Cleaverville Formati<strong>on</strong> and the De Grey<br />

Group. Warrawo<strong>on</strong>a Group mafic and ultramafic rocks al<strong>on</strong>g <strong>with</strong> minor chert bands are overlain by the<br />

Cleaverville Formati<strong>on</strong> (banded ir<strong>on</strong> formati<strong>on</strong> (BIF), fine grained clastic rocks and felsic volcanics). The<br />

Cleaverville Formati<strong>on</strong> is overlain by the De Grey Group, a widespread successi<strong>on</strong> <strong>of</strong> turbiditic sediments. In<br />

the project area the De Grey Group comprises the lower C<strong>on</strong>stantine Sandst<strong>on</strong>e and the upper Mallina<br />

Formati<strong>on</strong>.<br />

Northeasterly trending shear z<strong>on</strong>es cut the greenst<strong>on</strong>es. The Mallina, Mount Dove-Tabba Tabba and Mount<br />

Wohler Shear Z<strong>on</strong>es cut through the project area. The deposits and prospects in the project area occur <strong>on</strong> or<br />

in positi<strong>on</strong>s related to these shears.<br />

3.2.2 Turner River Gold Project<br />

Gold mineralisati<strong>on</strong> at Wingina Well is located al<strong>on</strong>g the Tabba Tabba Shear Z<strong>on</strong>e and hosted by steeply<br />

south-dipping chert units <strong>of</strong> the Cleaverville Formati<strong>on</strong>. The chert is up to 50 m wide, deeply weathered to<br />

more than 150 m below surface, and variably brecciated and gossanous. The chert is bounded by a shale<br />

unit to the north and a z<strong>on</strong>e <strong>of</strong> talc chlorite schist to the south.<br />

The Mt Berghaus deposit is located 10 km north-west <strong>of</strong> Wingina Well, <strong>on</strong> the Mallina Shear Z<strong>on</strong>e. Gold<br />

mineralisati<strong>on</strong> is hosted <strong>with</strong>in turbiditic arenites and argillites which are folded into a tight isoclinal plunging<br />

fold. Gold mineralisati<strong>on</strong> appears to occur <strong>on</strong> the southern limb <strong>of</strong> an isoclinal fold and is associated <strong>with</strong><br />

quartz veining, stockwork and breccia.<br />

The Amanda deposit is located 2 km north-east and al<strong>on</strong>g strike <strong>of</strong> Wingina Well. Gold mineralisati<strong>on</strong> is<br />

hosted <strong>with</strong>in pyritic chert units.<br />

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