File:Graphitic marble (49149538298).jpg
Original file (2,809 × 1,924 pixels, file size: 4.76 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionGraphitic marble (49149538298).jpg |
(public display, Limper Geology Museum, Miami University, Oxford, Ohio, USA) Marble is a crystalline-textured, calcitic, intermediate- to high-grade metamorphic rock. It forms by intense alteration of limestone. From exhibit signage: Graphitic Marble This marble contains a number of different minerals. The mineral graphite is visible as small black flakes with a shiny, metallis luster. It is derived from the metamorphism of carbon bearing material. Also visible are small gold colored pyrite crystals, dark flakes of phlogopite, and small brown/black magnetite crystals. The presence of the two minerals, pyrite and magnetite indicate that this marble is the product of contact metamorphism. Contact metamorphism results when heat and mineral laden fluids are produced by a nearby igneous body which cause the alteration of surrounding rock. Collecting locality unknown. |
Date | |
Source | Graphitic marble |
Author | James St. John |
Licensing
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49149538298 (archive). It was reviewed on 1 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
1 December 2019
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 08:55, 1 December 2019 | 2,809 × 1,924 (4.76 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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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 | NIKON CORPORATION |
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Camera model | NIKON D70s |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/5.6 |
ISO speed rating | 400 |
Date and time of data generation | 12:09, 4 September 2009 |
Lens focal length | 200 mm |
Width | 3,008 px |
Height | 2,000 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 16.0 (Macintosh) |
File change date and time | 00:17, 1 December 2019 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 12:09, 4 September 2009 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 5.906891 |
APEX aperture | 4.970854 |
APEX exposure bias | 0 |
Maximum land aperture | 5 APEX (f/5.66) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, strobe return light detected, auto mode |
DateTime subseconds | 00 |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 300 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 200638ad |
Lens used | 18.0-200.0 mm f/3.5-5.6 |
Date metadata was last modified | 19:17, 30 November 2019 |
Unique ID of original document | 609906A8F4B3FD10057B2CAED636146F |