File:Spokane Sapphire Mine (near Helena, Montana, USA) 22.jpg
![File:Spokane Sapphire Mine (near Helena, Montana, USA) 22.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Spokane_Sapphire_Mine_%28near_Helena%2C_Montana%2C_USA%29_22.jpg/800px-Spokane_Sapphire_Mine_%28near_Helena%2C_Montana%2C_USA%29_22.jpg?20210806161153)
Original file (3,996 × 2,579 pixels, file size: 8.87 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]DescriptionSpokane Sapphire Mine (near Helena, Montana, USA) 22.jpg |
English: Fluvial deposits are sedimentary layers laid down in fluvial systems - rivers and streams. In the channel facies, deposits are usually poorly sorted and cross-bedded. In the ancient rock record, channel deposits are typically sandstones and conglomerates. In the floodplain facies, deposits are usually fine-grained - in other words, mud. With burial and lithification, floodplain deposits become horizontally layered shales, maybe with mudcracks and occasional plant fossils, representing growth between flood events.
Seen here is a Pleistocene-aged river terrace gravel deposit along the Missouri River in Montana. This fluvial gravel is sapphire-bearing. Locality: small quarry at the Spokane Gravel Bar, southern slopes of the Missouri River Valley, northeast of the town of Helena, southeastern Lewis and Clark County, western Montana, USA (46° 39’ 40.74” North latitude, 111° 48’ 37.49” West longitude) |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/51357678747/ |
Author | James St. John |
Licensing
[edit]![w:en:Creative Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
![]() |
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/51357678747. It was reviewed on 6 August 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 August 2021
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 16:11, 6 August 2021 | ![]() | 3,996 × 2,579 (8.87 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51357678747/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
---|---|
Camera model | Canon PowerShot D10 |
Exposure time | 1/320 sec (0.003125) |
F-number | f/8 |
ISO speed rating | 80 |
Date and time of data generation | 16:43, 14 August 2011 |
Lens focal length | 6.2 mm |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 03:26, 5 August 2021 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 16:43, 14 August 2011 |
Meaning of each component |
|
Image compression mode | 3 |
APEX shutter speed | 8.3125 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905349794 |
Focal plane Y resolution | 16,483.516483516 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Landscape |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 23:26, 4 August 2021 |
Unique ID of original document | 20C84168DEA0A4B3E9B67336E7C6E9EF |