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<p>[QUOTE=&quot;randygeki, post: 2328427, member: 13719&quot;]I think 4.567 billion years old is my oldest thing&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" /></p><p>[ATTACH=full]471724[/ATTACH] </p><p><br /></p><p>Allende meteorite</p><p>Type Chondrite (stony, non-metallic)</p><p>Class Carbonaceous chondrite</p><p>Group CV3</p><p>Composition 23.85% total iron</p><p>Shock stage S1</p><p>Country Mexico</p><p>Region Pueblito de Allende, Allende, Chihuahua</p><p>Coordinates 26°58′N 105°19′WCoordinates: 26°58′N 105°19′W</p><p>Observed fall Yes</p><p>Fall date 01:05 local time (07:05 GMT) on 1969 February 8</p><p>TKW 2 metric tons</p><p><br /></p><p>Allende contains chondrules and CAIs that are estimated to be 4.567 billion years old,<a href="https://en.wikipedia.org/wiki/Allende_meteorite#cite_note-Amelin-5" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Allende_meteorite#cite_note-Amelin-5" rel="nofollow">[5]</a> the oldest known matter (other carbonaceous chondrites also contain these). This material is 30 million years older than the Earth and 287 million years older than the <a href="https://en.wikipedia.org/wiki/Oldest_dated_rocks" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Oldest_dated_rocks" rel="nofollow">oldest rock known on Earth</a>, Thus, the Allende meteorite has revealed information about conditions prevailing during the early formation of the Solar System. Carbonaceous chondrites, including Allende, are the most primitive meteorites, and contain the most primitive known matter. They have undergone the least mixing and remelting since the early stages of Solar System formation. Because of this, their age is frequently taken as the &quot;age of the Solar System.&quot;</p><p><br /></p><p><br /></p><p><a href="http://www.forumancientcoins.com/gallery/thumbnails.php?album=3904" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.forumancientcoins.com/gallery/thumbnails.php?album=3904" rel="nofollow">http://www.forumancientcoins.com/gallery/thumbnails.php?album=3904</a>[/QUOTE]</p><p><br /></p>

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