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Giant Crystals
Lubaska
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6
6-14-2007 10:59 AM
562 views
tags:
crystals
,
cave
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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/2e237950-dbfa-42e9-96aa-c9b7ea47c867/1EB18EFC-B1C4-4FA1-826F-720F316E415E/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/" href="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/" style="font-size: 11px;">www.kirchersociety.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/"><H2><A title="Permanent Link to Giant Crystals of Naica" href="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/" rel="bookmark">Giant Crystals of Naica</A></H2></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/www.kirchersociety.org/img/13F66726-642A-4946-BA48-1C4C3B321B72" alt="giantcrystal.jpg" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/">In 2000, geologists at the <A href="http://www.naica.com.mx/ingles/index.htm">Naica</A> zinc mine in Mexico discovered the largest crystals ever found in a <A href="http://giantcrystals.strahlen.org/america/naica.htm">cave</A> 300 meters beneath the Chihuahuan Desert. Some of the the sword-like selenite (gypsum) crystals are as long as 36 feet and weigh up to 55 tons. Earlier this year, Spanish geologists published a paper in the journal <A href="http://giantcrystals.strahlen.org/library/garciaruiznaica.pdf"><EM>Geology</EM></A> explaining the rare set of conditions that allowed the crystals to grow so extraordinarily large. </blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/www.kirchersociety.org/img/7FCFE1E8-B031-45FB-A7E8-7F4840E2955F" alt="giantcrystal2.jpg" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/"><P>“There is no limit to the size a crystal can reach,” García-Ruiz said.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.kirchersociety.org/blog/2007/06/12/giant-crystals-of-naica/"><P>But, he said, for the Cave of Crystals to have grown such gigantic crystals, it must have been kept just below the anhydrite-gypsum transition temperature for many hundreds of thousands of years.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;"> </td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/1EB18EFC-B1C4-4FA1-826F-720F316E415E/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>
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