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Laterite Leach Tests

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ANSTO Minerals Report C1206 to Lagoon Creek Resources – Westmoreland Deposits<br />

Run LC1 D Dilute - Base Case Lagoon Creek Uranium Project Oxidant: 30% Hydrogen Peroxide ICP/OES Request No: 1002199<br />

pH 1.5 Solids: 40 g Jack - Pulverised <strong>Leach</strong> Duration: 24 h ICP/MS Request No: 1002199<br />

<strong>Leach</strong> Liquor Matrix: 2000 g Sydney Water Temperature: 40ºC XRF Request No: 1002199<br />

Slurry: 2% ORP: 500 mV<br />

DNA Request No: 1002199<br />

Fe Addition: 1.5 g/L as 14.13 g Fe2(SO4)3.7H2O pH: 1.5 Date: 15/07/2010<br />

U Extraction<br />

(%)<br />

Time Temp. ORP<br />

Acid<br />

Free Acidity<br />

Addition<br />

Acid<br />

Cons.<br />

Oxidant<br />

Addition<br />

Fe K<br />

Mn<br />

(h) (°C) (mV) (kg/t) (g/L H2SO4) (kg/t) (kg/t)<br />

Head 929 1500 1500<br />

3+<br />

<strong>Leach</strong> Conditions<br />

Uranium Assay<br />

(ppm U3O8) Solution Assays (mg/L)<br />

Sample ID<br />

pH DNA DNA Al<br />

As Ca Fe Mg<br />

Na P S Si U<br />

LC1 D1 4 40 1.5 585 397 6.1 384 4

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