GM 40396 REPORT ON THE NEPHELINE SYENITE NEAR THE GOODWOOD RIVER I
REPORT ON THE NEPHELINE SYENITE NEAR THE GOODWOOD RIVER QUEBEC
EXPLORATION PERMIT 670
NTS 23 0 ,/ 4
WORK PERIOD: 14 July 1982 to 14 July 1983
REPORT DATE: September 1983
Ministère de l'Énergie et des Ressources Gouvernement du Québec Service de la Geoinformatioti 4 JAN, 1984 DATE No G.M 40396 ..,.~,..~
A. Barry S.L. Fumerton i
SUMMARY AND RECOMMENDATIONS
Three closely spaced nepheline syenite bodies have been found 75 km northwest of Schefferville. They were emplaced in the Superior Basement and are deformed and metamorphosed by the Kenoran Orogeny. Only three (3) main petrographic phases have been recognized, the main leuco-nepheline syenite (essexite) phase, a mela-nepheline syenite (ijolite) minor phases, and a mixed leuco-nepheline syenite/feldspar pegmatite phase. The bodies are crudely zoned with nepheline being greatest in the cores and ranging from 0 - >60% nepheline. Other related alkalic rocks such as carbonatites are not known but may exist some distance from the nepheline syenite.
No further field work is recommended at present on the nepheline syenite itself, but regional reconnaissance for other alkalic rocks should continue. ii
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LIST OF MAPS IN BACK POCKET LIST OF FIGURES iv