DescriptionDAR AL GANI 400 - AN AUTHENTICATED PARTIAL SLICE OF THE MOON.
Lunar meteorite (anorthositic breccia)
The Sahara Desert / Libya
The following two lots are lunar samples vetted by scientists; the published abstracts describing these specimens accompany each lot. There are only 125 pounds of lunar meteorites known to exist. Further, nearly one third of all documented lunar meteorites were recovered by researchers in Antarctica, and not one gram of this material will find its way into the public sector. In short, samples of the Moon are among the rarest substances on Earth and among the most difficult to obtain. Lunar samples are identified by highly specific geological, mineralogical, chemical and radiation signatures. The minerals comprising the Moon's crust are limited and the most common minerals comprising Earth's surface are not found on the Moon-including all hydrated (water bearing) minerals. Lunar rocks also contain gasses originating from the solar wind with isotope ratios that are different than the same gases found on Earth, and their crystallization age makes them older than any rock on Earth. It is believed that portions of the Moon and Mars arrived on Earth following asteroid impacts that jettisoned material into space. One needs to only look at the craters of the Moon to appreciate the size and number of such impacts. Suspected lunar meteorites are also matched against lunar samples returned to Earth by the Apollo missions. The appearance of the first specimen seen here, DAG 400, is the result of repeated impacts upon the lunar surface that resulted in the crushing and remelting of material. It is most likely that an impact event (an asteroid striking the Moon) launched the mass from which this slice is derived into space and, millions of years later, into Earth's orbit where it eventually fell in the Dar al Gani region of the Sahara Desert. DAG 400 contains white chips of anorthosite and has been extensively studied by scientists throughout the world. This is a thin partial slice of the most celebrated object in the night sky: the Moon. Accompanied by a Macovich Collection of Meteorites provenance and the DAG 400 abstract in the Meteoritical Bulletin LXXXII (1998). 35 x 38 x 1mm (1.33 x 1.5 x .1 inches) and 2.52 grams.
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