File:Mn-oxide stained Butte Quartz Monzonite (Orphan Boy Mine, Butte, Montana, USA).jpg
![File:Mn-oxide stained Butte Quartz Monzonite (Orphan Boy Mine, Butte, Montana, USA).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Mn-oxide_stained_Butte_Quartz_Monzonite_%28Orphan_Boy_Mine%2C_Butte%2C_Montana%2C_USA%29.jpg/707px-Mn-oxide_stained_Butte_Quartz_Monzonite_%28Orphan_Boy_Mine%2C_Butte%2C_Montana%2C_USA%29.jpg?20210308151945)
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[edit]DescriptionMn-oxide stained Butte Quartz Monzonite (Orphan Boy Mine, Butte, Montana, USA).jpg |
English: The town of Butte, Montana 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 copper 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. Seen here is the grounds of the former Orphan Boy Mine in Butte. Hydrothermal veins in this area are part of the lead-zinc-gold zone. Copper occurs in Butte's central zone. Mining at this site used to be for manganese (Mn), which was concentrated in the uppermost supergene enrichment cap. Dark manganese oxide-stained rocks are common close to the veins. Locality: grounds of the Orphan Boy Mine, western side of the town of Butte, southwestern Montana, USA (vicinity of 46° 00' 42.36" North latitude, 112° 34' 05.50" West longitude) |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/51011611903/ |
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@N05/51011611903. It was reviewed on 8 March 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
8 March 2021
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current | 15:19, 8 March 2021 | ![]() | 3,227 × 2,736 (8.62 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51011611903/ with UploadWizard |
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Camera manufacturer | EASTMAN KODAK COMPANY |
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Camera model | KODAK EASYSHARE Z1012 IS Digital Camera |
Exposure time | 1/800 sec (0.00125) |
F-number | f/3.2 |
ISO speed rating | 80 |
Date and time of data generation | 12:55, 10 August 2010 |
Lens focal length | 11.7 mm |
Width | 3,648 px |
Height | 2,736 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 480 dpi |
Vertical resolution | 480 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 08:44, 7 March 2021 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 12:55, 10 August 2010 |
Meaning of each component |
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APEX shutter speed | 9.6666666666667 |
APEX aperture | 3.4 |
APEX brightness | 1 |
APEX exposure bias | 0 |
Maximum land aperture | 3.4 APEX (f/3.25) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
DateTimeOriginal subseconds | 64 |
Supported Flashpix version | 1 |
Color space | sRGB |
Exposure index | 80 |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Custom process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 57 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Unique ID of original document | 66EA9F3EB317CCD654974C936005C41F |
Date metadata was last modified | 03:44, 7 March 2021 |
Keywords | Butte Montana day 1 and 2 |