New areas and new tools for exploring Abitibi
Direction de Géologie Québec
New exploration areas
The 2003 fieldwork season has brought geologists
of the Ministère des Ressources naturelles de la Faune
et des Parcs (MRNFP) to some of the less well-known areas of
the Abitibi Region which, to date, have been relatively untouched
by mineral exploration (PDF Format, 104 Kb).
East of Matagami, a team of Service géologique du
Nord-Ouest (SGNO) geologists, led by Jean Goutier, identified
and mapped the extension of the Watson Lake Group, host to several
volcanogenic massive sulphide deposits in the Matagami camp. This
highly prospective area was staked immediately after disclosure
of fieldwork last November, demonstrating how collecting data in
the vicinity of known Abitibi mining camps can have real and measurable
effects on mineral exploration (PDF Format, 413 Kb).
vast stretch of the Grenville Front south of Chibougamau was studied
by an integrated and multidisciplinary team including Daniel Bandyayera,
Sandrine Cadéron, Pierre Rhéaume, Patrice Roy, and
Sophie Turcotte. The project consisted of geological mapping with
an emphasis on the behaviour of mineralization and associated alteration
at high metamorphic grades. In 2003, the team mapped a wide band
of Archean volcanic rocks containing komatiites. This band, which
had previously been erroneously interpreted as Grenville gneiss,
is another newly discovered area with favourable mineral potential
(PDF Format, 2,74 Mb).
Furthermore, major gold and copper bearing regional structures have
been well documented for the first time on the NE flank of the la
Dauversière Pluton. The alteration and mineralization associated
with these structures are quite similar to those at the Joe Mann
Mine, currently under production SW of the pluton (PDF Format, 2,20 Mb).
Finally, east of Rouyn-Noranda, a metallogenic
and volcanogenic study of the Blake River Group conducted by SGNO,
under the supervision of Benoit Lafrance and Claude Dion, brought
out the structural complexity of the volcanic sequence of the Reneault-Dufresnoy
Formation. Their re-interpretation significantly increases the potential
for discovering new volcanogenic deposits, similar to the nearby
Bouchard-Hébert Mine, in a relatively less explored portion
of the Blake River Group.
and measurable effect