Polygenetic pyritic gold occurrences in Bousquet Township, Quebec
Conference
·
· Geol. Soc. Am., Abstr. Programs; (United States)
OSTI ID:6070120
Bousquet Township contains stratiform and stratabound pyritic gold deposits and gold-bearing quartz veins within volcaniclastic sedimentary rocks, felsic volcanic rocks and a granitoid stock on the south side of the Abitibi Greenstone Belt, 50 km east of Noranda, Quebec. Bousquet number3 is a large stratiform lens of fine grained gold in layered disseminated and massive pyrite with minor telluride and base metal sulfide minerals. The enclosing rock consists of quartz and muscovite with accessory andalusite, corundum, paragonite, chloritoid, and manganiferous garnet. Bousquet number5 and Doyon number2 are large stratabound lenses of fine grained gold with disseminated pyrite on a cleavage penetrating a rock of quartz, muscovite, chlorite and carbonate. The vein deposits are relatively small and have gold with quartz, pyrite, and chalcopyrite which crosscut the Doyon number2 lens and the granitoid stock. The stratiform, stratabound, and vein deposits record a progressive metallogenic event coeval with deposition and deformation of the enveloping rocks. The stratiform deposits are interpreted as products of exhalative activity accompanying felsic volcanism. Stratabound occurrences are interpreted as successively modified variations of the stratiform deposits or, as gold introduced during deformation which is synchronous with or after volcanism. The vein deposits represent waning stages of hydrothermal fluid circulation accompanying crystallization of the granitoid stock toward the end of volcanic activity in the district.
- Research Organization:
- Lac Minerals Exploration Ltd., Toronto, Ontario (Canada)
- OSTI ID:
- 6070120
- Report Number(s):
- CONF-8510489-
- Conference Information:
- Journal Name: Geol. Soc. Am., Abstr. Programs; (United States) Journal Volume: 17
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
CANADA
CHALCOGENIDES
GOLD ORES
GRANITES
HYDROTHERMAL ALTERATION
HYDROTHERMAL SYNTHESIS
IGNEOUS ROCKS
IRON COMPOUNDS
IRON SULFIDES
MINERALIZATION
MINERALOGY
MINERALS
NORTH AMERICA
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PETROGENESIS
PLUTONIC ROCKS
PYRITE
QUARTZ
QUEBEC
ROCK-FLUID INTERACTIONS
ROCKS
SILICON COMPOUNDS
SILICON OXIDES
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
VOLCANISM
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
CANADA
CHALCOGENIDES
GOLD ORES
GRANITES
HYDROTHERMAL ALTERATION
HYDROTHERMAL SYNTHESIS
IGNEOUS ROCKS
IRON COMPOUNDS
IRON SULFIDES
MINERALIZATION
MINERALOGY
MINERALS
NORTH AMERICA
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PETROGENESIS
PLUTONIC ROCKS
PYRITE
QUARTZ
QUEBEC
ROCK-FLUID INTERACTIONS
ROCKS
SILICON COMPOUNDS
SILICON OXIDES
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
VOLCANISM