File:Blue diopsidite skarn Buryatia Republic, Transbaikalia, eastern Siberia.jpg
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DescriptionBlue diopsidite skarn Buryatia Republic, Transbaikalia, eastern Siberia.jpg |
Blue diopsidite skarn (tumble-polished specimen) from the Neoproterozoic of the Dovyren Highlands, eastern Siberia, Russia. Skarn is a coarsely-crystalline, contact metamorphic rock. The attractive rock shown here is a rare variety of skarn dominated by bluish-colored diopside pyroxene (“violane” or “violan”) ((Ca,Mg,Fe)₂Si₂O₆). Such rocks are called diopsidite skarn. Geologic origin & context & age: magnesium skarn formed by metamorphism of dolostone xenoliths by a gabbro-peridotite layered intrusion, Yoko-Dovyrensky Massif, Neoproterozoic, ~700 Ma. Locality: Dovyren Highlands, Buryatia Republic, Transbaikalia, eastern Siberia, Russia. |
Date | |
Source | Blue diopsidite skarn (Neoproterozoic, about 700 Ma; Dovyren Highlands, Buryatia Republic, Transbaikalia, eastern Siberia, Russia) 1 |
Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15079580766. It was reviewed on 1 September 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
1 September 2014
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current | 19:22, 1 September 2014 | 1,984 × 1,352 (834 KB) | Tillman (talk | contribs) | Transferred from Flickr via Flickr2commons |
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Camera manufacturer | Canon |
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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 | 09:55, 5 April 2012 |
Lens focal length | 11.614 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 02:25, 1 September 2014 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 09:55, 5 April 2012 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.90625 |
APEX exposure bias | 0 |
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 | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Supported Flashpix version | 1 |
Image width | 1,984 px |
Image height | 1,352 px |
Date metadata was last modified | 22:25, 31 August 2014 |
IIM version | 2 |