An innovative 3D common-earth model south
of the Chibougamau Mining Camp
Patrice Roy (MRNF)
Francine Fallara (URSTM-UQAT)
The Chibougamau area has an extensive mining history. Nevertheless, it remains relatively unexplored. To contribute to stimulating exploration activities, a 3D common-earth model of the south limb of the Lac Doré Complex is being prepared. This innovative regional approach will make it possible to formulate queries and target various types of deposits within a single model. New exploration targets could therefore be identified on the basis of known ore-deposit models.
(Available in French)
2D Geology and mineralization of the south limb of the Doré Lake Complex, which will be modelled in 3D |
The area selected for the model has excellent potential for copper and gold exploration. It covers the south limb of the Lac Doré Complex and includes the Devlin and Corner Bay copper deposits, as well as the Lac Doré vanadium deposit. It also includes the Lemoine member, hosting the old Lemoine Mine, which was known for its exceptional grades and net revenue. Finally, it covers the volcanic units south of the Lac Doré Complex, as far as the La Dauversière Pluton. These units contain many gold and copper showings, including the East Showing.
Many showings in the area can be associated with existing deposit models. Among these, the most important are volcanogenic massive sulphides, Cu-Au veins, magmatic Fe-Ti-V deposits, Cu-Au porphyries, Chibougamau-type Cu-Au veins, and orogenic gold veins. Their main characteristics are presented (Format PDF, 62 Ko Available in French). |
A number of actions will be taken once the 3D model has been completed. It provides an opportunity for reviewing and validating stratigraphy, standardizing data banks, updating the geological map, studying the most recent showings, validating established metallogenic models, defining regional alteration envelopes, and locating new 3D exploration vectors.
(Available in French)
The various stages of the construction of the 3D common-earth model of the south limb of the Doré Lake Complex and a progress report on the work. |
The preliminary 3D model of the south limb of the Lac Doré Complex will be available at Québec Exploration 2006, which will be held next November. The various stages of its construction, a progress report on the work, and the products to be delivered are presented in the adjoining figure.
The model was prepared in partnership with URSTM-UQAT, with the cooperation of mining companies active in the area: Cambior, Campbell Resources, Cogitore Resources, Loubel Exploration (Lounor) and SOQUEM.
To find out more about 3D modelling, please read the article entitled 3D Common-Earth Model, in the February 2003 edition. |
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