File:Large Lunar Gabbro — Main Mass of NWA 6950 (50059853678).jpg
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editDescriptionLarge Lunar Gabbro — Main Mass of NWA 6950 (50059853678).jpg |
NWA 6950 originates from the Moon's dark basaltic plains. It is among the youngest lunar materials known and among the most important Moon rocks discovered. Found near the border between Mali and Algeria by nomadic Berbers in June 2011, NWA 6950 was purchased by a Moroccan dealer. The scientific abstract in the Meteoritical Bulletin which documents NWA 6950's lunar origins was authored by Dr. Anthony Irving, one of the world's foremost planetary experts. NWA 6950 consists primarily of basalt (volcanic rock) and cumulate olivine gabbro (dense greenish material that contains pyroxene, plagioclase and amphibole) - which proves the Moon was volcanically active far longer than imagined. The plagioclase is partially converted to maskelynite, a shock glass - and an elegantly thin filigree of shock veins courses through the matrix. The presence of this otherworldly ornamentation is consistent with the delivery mechanism of a large asteroid striking the lunar surface and launching material into outer space. This notable offering is the result of a cataclysmic explosion on the Moon, a hard landing on Earth and the winds of the Sahara, and is the most naturally sublime lunar specimen known. Said Dr. Randy Korotev, one of the world’s experts on the Moon’s geochemistry “This is one of the most unusual lunar meteorites. It is unlike any rock in the Apollo collection.” Dr. Korotev was pointing out that the texture of this sample is different from the many different lithologies found in Apollo lunar samples. Moon rocks are identified by their mineralogy and chemistry. Many of the more common minerals found on Earth are rare or absent on the Moon and some minerals found on the Moon are not encountered on Earth. NWA 6950 has been chemically paired with other documented meteorites, which is to say they originated from the same impact event and all are referred to as the NWA 773 clan of meteorites. <a href="https://www.lpi.usra.edu/meteor/metbull.php?code=54513" rel="noreferrer nofollow">NWA 6950</a>, Lunar Gabbro (one of 10 ever found), 362g end-cut from main mass. 8x12cm. |
Date | |
Source | Large Lunar Gabbro — Main Mass of NWA 6950 |
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@N01/50059853678. 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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current | 09:12, 10 May 2021 | ![]() | 6,008 × 4,292 (4.46 MB) | Sentinel user (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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Camera model | Canon EOS 5D Mark IV |
Exposure time | 1/250 sec (0.004) |
F-number | f/7.1 |
ISO speed rating | 3,200 |
Date and time of data generation | 13:52, 29 June 2020 |
Lens focal length | 100 mm |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 13:52, 29 June 2020 |
Exposure Program | Aperture priority |
Exif version | 2.3 |
Date and time of digitizing | 13:52, 29 June 2020 |
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APEX exposure bias | 0 |
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Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 00 |
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DateTimeDigitized subseconds | 000 |
Supported Flashpix version | 1 |
Color space | sRGB |
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Rating (out of 5) | 0 |