File:Anthracite coal (Pennsylvanian; Hazelton, Pennsylvania, USA) 21.jpg
Original file (2,226 × 1,795 pixels, file size: 2.08 MB, MIME type: image/jpeg)
This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help. |
Summary
DescriptionAnthracite coal (Pennsylvanian; Hazelton, Pennsylvania, USA) 21.jpg |
English: Anthracite coal from the Pennsylvanian of Pennsylvania, USA.
Anthracite coal is the highest-rank of coal. It forms by very low-grade metamorphism (anchimetamorphism) of bituminous coal. Anthracite is always black-colored, with a glassy texture, and is harder and heavier than other coals, although it is still relatively soft and lightweight for its size. In comparison with lignite and bituminous coal, anthracite is less sooty to the touch. Anthracite burns hotter than other coal types, due to its high carbon content (~90% C). It is also the cleanest-burning of all the coal ranks. Anthracite is a scarce variety of coal. The highest concentration of anthracite on Earth is in the Pennsylvanian-aged coal fields of eastern Pennsylvania, USA. There is still some uncertainty in the details about the origin of Pennsylvania anthracite coal. In Colorado, an anthracite coal deposit occurs next to an igneous intrusion - the anthracite formed by heating from contact or hydrothermal metamorphism. It's been suggested that Pennsylvania anthracite was hydrothermally metamorphosed. The anthracite in Pennsylvania was originally deposited in coal swamps that were relatively high on ancient alluvial plains - those environments are usually not preserved in mountain belts (they get uplifted and eroded). In Pennsylvania, the high alluvial plain facies were downdropped and got preserved, resulting in anthracites representing different facies from those seen in bituminous coal fields. Age: Pennsylvanian Locality: unrecorded/undisclosed site at or near the town of Hazelton (probably a coal mine), eastern Pennsylvania, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/51006015215/ |
Author | James St. John |
Licensing
- 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@N05/51006015215. It was reviewed on 27 March 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
27 March 2021
Items portrayed in this file
depicts
26 March 2021
0.01666666666666666666 second
11
11.614 millimetre
image/jpeg
64d3f5a3a3dec81e51897f555681b0addfa26920
2,179,793 byte
1,795 pixel
2,226 pixel
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 06:07, 27 March 2021 | 2,226 × 1,795 (2.08 MB) | Ser Amantio di Nicolao | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51006015215/ with UploadWizard |
File usage
The following page uses this file:
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer | Canon |
---|---|
Camera model | Canon PowerShot D10 |
Exposure time | 1/60 sec (0.016666666666667) |
F Number | f/11 |
ISO speed rating | 80 |
Date and time of data generation | 11:15, 26 March 2021 |
Lens focal length | 11.614 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 | 01:11, 27 March 2021 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 11:15, 26 March 2021 |
Meaning of each component |
|
Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.90625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
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 | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 21:11, 26 March 2021 |
Unique ID of original document | 9EC8FA8F157879710DA9E50A6DA91E46 |