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Gemstones, Minerals & Fossils
Meteorites
Anybody researched impact sites then gone out looking for meteorites?
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<blockquote data-quote="user 4386" data-source="post: 538998" data-attributes="member: 4386"><p>Just for those who don't know, impact craters do not have large meteorites in their base (one American spent a fortune digging tunnels into a large impact crater in Nevada, thinking he would find an iron ore mine). In fact of the largest impact craters, only two (one being Wolf Creek) have any of the original meteorite fragments within the crater. However meteorite fragments are often found in the area outside craters, surrounding them. Sometimes after impact, the Earth's crust re-adjusts, and what was originally the floor of the crater rises, becomes a hill in its center (e.g. Mistamin Crater, where Horshoe Island in the centre is the risen floor).</p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/4386/1582600476_mistamin.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Tektites are not thought to be of extra-terrestrial origin (not from space), but are thought to be glass formed from Earth rocks during the impact and thrown into the air.</p><p></p><p>However I guess most of you who hunt around impact sites know this - but it might inform beginners.</p><p></p><p><a href="https://en.wikipedia.org/wiki/List_of_impact_craters_in_Australia" target="_blank">https://en.wikipedia.org/wiki/List_of_impact_craters_in_Australia</a></p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/4386/1582600649_impact_site_names.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="user 4386, post: 538998, member: 4386"] Just for those who don't know, impact craters do not have large meteorites in their base (one American spent a fortune digging tunnels into a large impact crater in Nevada, thinking he would find an iron ore mine). In fact of the largest impact craters, only two (one being Wolf Creek) have any of the original meteorite fragments within the crater. However meteorite fragments are often found in the area outside craters, surrounding them. Sometimes after impact, the Earth's crust re-adjusts, and what was originally the floor of the crater rises, becomes a hill in its center (e.g. Mistamin Crater, where Horshoe Island in the centre is the risen floor). [img]https://www.prospectingaustralia.com/forum/img/member-images/4386/1582600476_mistamin.jpg[/img] Tektites are not thought to be of extra-terrestrial origin (not from space), but are thought to be glass formed from Earth rocks during the impact and thrown into the air. However I guess most of you who hunt around impact sites know this - but it might inform beginners. [url]https://en.wikipedia.org/wiki/List_of_impact_craters_in_Australia[/url] [img]https://www.prospectingaustralia.com/forum/img/member-images/4386/1582600649_impact_site_names.jpg[/img] [/QUOTE]
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Gemstones, Minerals & Fossils
Meteorites
Anybody researched impact sites then gone out looking for meteorites?
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