Filed Under Environment

St. James Hospital Area

This wall, and others in the neighborhood, contains large boulders of the oxidized ore vein rock, especially low in the wall. As the boulders were likely not transported far, these boulders were obtained locally during excavation of the bedrock in the area.

Images

Untitled Vein overview (looking north).
Untitled A natural exposure of an oxidized ore vein cutting through granite is along Jackson Street. The vein outcrop is on the left as you look west.
Untitled Platinum St vein cuts through granite in the slope above the sidewalk. Note how discolored (reds due to iron oxide) the granite appears to be. The vein is reddish with black colors. Oxidized ore vein wall and with an outcrop of ore vein to the right (looking northwest).
Untitled This wall, and others in the neighborhood, contains large boulders of the oxidized ore vein rock, especially low in the wall. As the boulders were likely not transported far, these boulders were obtained locally during excavation of the bedrock in the area.
Untitled Oxidized ore vein wall and with an outcrop of ore vein in the yard in the background (looking northeast). The area from Platinum Street to St. James Hospital has many walls made of the oxidized ore veins. Because the veins run through this area, excavations for foundations encountered these rocks making for a local supply of the material. It was then re-used for retaining walls and foundations.

Location

Metadata

Larry Smith, “St. James Hospital Area,” Story of Butte, accessed April 14, 2024, https://storyofbutte.org/items/show/3458.