| | The Last Chance Zone was discovered by UNOCAL in 1989. It occurs within the lower of two porphyritic syenite intrusions within generally unaltered ultramafic and mafic rocks on the south side of the Destor Porcupine Fault Zone ("Destor").
UNOCAL drilled 11 holes in this zone and Barrick drilled a further 9 holes in 1996. This zone is approximately 2.5 kilometers west of the Twin Creeks Zone along the Destor and 1.7 kilometers south-southeast of the Ludgate Zone.
The syenite porphyries dip southwest with the lower boundary of the lower syenite in fault contact with ultramafic rocks. Gold mineralization is associated with the upper contact and centre of the lower syenite porphyry occurring in quartz and quartz-carbonate stringers within siliceous, hematitic alteration containing up to 5% pyrite. UNOCAL reported the following intersections:
| MU-89-108 |
11.3 g/t over 3.7 meters and 20.6 g/t over 1.2 meters; |
| MU-89-133 |
8.6 g/t over 2.5 meters; |
| MU-89-126 |
13.0 g/t over 3.1 meters; |
| MU-89-129 |
13.0 g/t over 1.8 meters. |
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