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| Property Location |
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The Lac des Iles Mining Operation is located 85 km north of the city of Thunder Bay, Ontario. The Roby Zone Deposit is hosted within an Archean aged (2689.0 +/-1.0 Ma) suite of mafic/ultramafic intrusives called the Lac des Iles Intrusive Complex (LDI-IC).
The LDI-IC lies immediately north of the boundary between the Wabigoon and Quetico Subprovinces (which is marked by the Quetico Fault Zone) of the Canadian Shield and is the largest of a series of mafic to ultramafic (MUM) intrusives that define a regional circular pattern approximately 30 km in diameter.
The LDI-IC has been subdivided into three main intrusives bodies, from north to south, these are: the North Lac des Iles Intrusion (predominantly ultramafic in composition), the Mine Block Intrusion or MBI (compositionally and texturally the most complex and the host for the Roby Zone Ore Body), and the Camp Lake Intrusive (a border phase of the Shelby Lake Sanukatoid).
The Roby Zone Ore Body is dominated by varitextured gabbro containing pipes and pods of breccia. The breccia contains blocks up to (~60 m across) of varying lithology. Mineralization at Lac des Iles occurs as: (1) PGE-Ni-Cu rich breccias (breccia ore); (2) mineralized dikes or sills (North Roby Zone); and (3) within a 15 m to 25 m thick unit of high grade Pd mineralization located along the eastern portion of the Roby Zone in contact with the barren East Gabbro that forms the hangingwall of the deposit.
Mineralization to date at the Roby Zone has been outlined by surface trenching and diamond drilling over a 900 m long by 850 m wide area, and has been traced to a vertical depth of 1220 m. |