File:Admire Pallasite Meteorite — 5x Macro -5 (50867091783).jpg
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[edit]DescriptionAdmire Pallasite Meteorite — 5x Macro -5 (50867091783).jpg |
Microscopic view of Admire pallasite slice. From the <a href="https://www.lpi.usra.edu/meteor/metbull.php?code=380" rel="noreferrer nofollow">Meteoritical Bulletin</a>: one of 43 known pallasites, first found in Kansas in 1881. The Admire pallasite formed at the mantle-core boundary of an asteroid about 4.5 billion years ago. Deep inside the asteroid, molten metal from the outer core mixed with chunks of the olivine mantle that had crystallized. Things remained quiet for Admire until a major collision shattered the asteroid roughly 100 million years ago; this event and subsequent, less energetic collisions set the Admire pallasite material on a collision course with Earth. Admire is a pallasite stony-iron meteorite containing a mixture of olivine crystals and nickel-iron metal in approximately equal amounts. Pallasites are one of the rarest types of iron-rich meteorites. The original Admire Pallasite was discovered in 1881 in a farm in Lyon County Kansas when it was struck by a plow. A return with metal detectors found more. With 11% Nickel-Iron, it is a typical main group Pallasite. Pallasites represent less than 0.2% of all known meteorites The extraterrestrial olivine can be seen when the specimens are backlit (examples below). The olivine in pallasites is the same mineral as the gemstone Peridot but these peridot are special they are not from the Earth. |
Date | |
Source | Admire Pallasite Meteorite — 5x Macro #5 |
Author | Steve Jurvetson from Los Altos, USA |
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This image was originally posted to Flickr by jurvetson at https://flickr.com/photos/44124348109@N01/50867091783. It was reviewed on 10 May 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
10 May 2021
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Camera manufacturer | Canon |
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Camera model | Canon EOS 5D Mark IV |
Exposure time | 1/100 sec (0.01) |
F-number | f/10 |
ISO speed rating | 25,600 |
Date and time of data generation | 16:55, 4 October 2020 |
Lens focal length | 65 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 16:55, 4 October 2020 |
Y and C positioning | Centered |
Exposure Program | Aperture priority |
Exif version | 2.3 |
Date and time of digitizing | 16:55, 4 October 2020 |
Meaning of each component |
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APEX shutter speed | 6.625 |
APEX aperture | 6.625 |
APEX exposure bias | 0 |
Maximum land aperture | 2.8284271210653 APEX (f/2.67) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 000 |
DateTimeOriginal subseconds | 000 |
DateTimeDigitized subseconds | 000 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 5,719.1489361702 |
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Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Lens used | Canon MP-E 65mm f/2.8 1-5x Macro Photo |