File:Lexington Mine headframe (Butte, Montana, USA).jpg
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English: The town of Butte, Montana (pronounced “byoot”) is known as the “Richest Hill on Earth” and "The Mining City". The Butte Mining District has produced gold, silver, copper, molybdenum, manganese, and other metals.
The area's bedrock consists of the Butte Quartz Monzonite (a.k.a. Butte Pluton), which is part of the Boulder Batholith. The Butte Quartz Monzonite ("BQM") formed 76.3 million years ago, during the mid-Campanian Stage in the Late Cretaceous. BQM rocks have been intruded and altered by hydrothermal veins containing valuable metallic minerals - principally sulfides. The copper mineralization has been dated to 62-66 million years ago, during the latest Maastrichtian Stage (latest Cretaceous) and Danian Stage (Early Paleocene). In the supergene enrichment zone of the area, the original sulfide mineralogy has been altered. From a brochure on Butte area mines: LEXINGTON MINE 1876-1957 3260 Feet Deep This mine, sold by its initial owner for a team of white horses, eventually produced millions of dollars worth of silver and zinc. Like most of the other mines on the hill, the "Lex" was originally a shallow, open mine or glory hole. As larger amounts of material were removed, a wooden gallows frame was erected to handle the increased load of men and ore. Eventually, it was replaced with a steel headframe transplanted from the Adams mineyard. The Lexington lies within the city limits of Walkerville, Butte's northern neighbor. While the separation between the two cities is hardly discernible, Walkerville taxes on ore were high, while in Butte they were low. They say dynamite solved the problem. A tunnel was blasted from the Lexington down to the vicinity of the Anselmo and ore was removed through the "Butte exit" ! Labor disputes in Butte often erupted into violence. The spotlight on top of this headframe combed the surrounding terrain from dusk till dawn during strikes to foil attempts at sabotage against the company. The metal sheaths around the cages protected scab labor from periodic sniping by desperate strikers. Locality: Lexington Mine, Butte Mining District, northeastern Silver Bow County, southwestern Montana, USA |
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| Source | https://www.flickr.com/photos/47445767@N05/50881938368/ |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/50881938368. It was reviewed on 28 January 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 14:42, 28 January 2021 | | 2,000 × 2,642 (2.79 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50881938368/ with UploadWizard |
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