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Foucault Quarry, Brownsburg-Chatham, Argenteuil RCM, Laurentides, Québec, Canada
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Latitude: 45°40'5"N
Longitude: 74°30'33"W
Active quarry since 1999. The following has been extracted from the MRN's Fiche de gîte (Deposit File) :

The main rock type is a quartziferous, coarse-grained, orange-brown syenite of the Chatham-Grenville sequence. Most of the quarry rock is fractured and altered.

Two metric-sized shear zones cross the quarry diagonally. Close to these shear zones, the rock is hematized, sericitized, epidotized, chloritized, and cut by brecciated and geodic calcite veins.

A significant pyrite, fluorite (green and mauve) and quartz mineralization is present in these veins.

Mineral List


4 entries listed. 4 valid minerals.

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-Bellemare, Y. (2000): Inventaire des carrieres de Pierre, region du Sud-ouest du Quebec. Fiche de gîte du MRN. MB-2000-01

External Links

The MRN's website :

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