{"id":120,"date":"2011-07-06T09:09:40","date_gmt":"2011-07-06T09:09:40","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2011\/07\/06\/japon-des-boues-tres-riches-en-terres-rares-recouvrent-certains-fonds-du-pacifique\/"},"modified":"2012-07-12T12:34:10","modified_gmt":"2012-07-12T12:34:10","slug":"japon-des-boues-tres-riches-en-terres-rares-recouvrent-certains-fonds-du-pacifique","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2011\/07\/06\/japon-des-boues-tres-riches-en-terres-rares-recouvrent-certains-fonds-du-pacifique\/","title":{"rendered":"Japon: des boues tr\u00e8s riches en terres-rares recouvrent certains fonds du Pacifique"},"content":{"rendered":"<p>&#160;Certains fonds marins du Pacifique dont ceux autour de la Polyn\u00e9sie fran\u00e7aise, sont recouverts de boues tr\u00e8s riches en terres-rares d\u00e9voile une \u00e9quipe japonaise de prospection de l&#039;Universit\u00e9 de Tokyo. A partir de l&#039;analyse de pr\u00e9l\u00e8vements de boue r\u00e9alis\u00e9s par carottage en divers points du Pacifique entre 3500 et 6000 m\u00e8tres de profondeur cette \u00e9quipe a d\u00e9couvert un nouveau type de minerai tr\u00e8s riche en terres-rares et autres m\u00e9taux (Va, Co, Ni, Mo, U, Th). L&#039;\u00e9paisseur de la couche de boue dans les zones les plus riches varie selon les sondages entre 8 m\u00e8tres et plus de 20 m\u00e8tres et les teneurs en terres-rares varient de 500 ppm \u00e0 plus de 1000 ppm (CARTE, ronds oranges).<\/p>\n<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/6a00d83451b18369e2014e89a21776970d-pi.jpg\"><img decoding=\"async\" alt=\"Pacifique-terres-rares\" class=\"asset  asset-image at-xid-6a00d83451b18369e2014e89a21776970d\" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/6a00d83451b18369e2014e89a21776970d-450wi.jpg\" style=\"width: 450px\" \/><\/a><\/p>\n<p>&#160;Les quantit\u00e9s de terres-rares dans ces boues repr\u00e9senteraient une ressource mille fois plus grande que celle estim\u00e9e \u00e0 ce jour dans les terres. Les compositions de ces boues sont tr\u00e8s voisines de celles des minerais exploit\u00e9s dans le sud de la Chine form\u00e9s par l&#039;adsorption d&#039;ions m\u00e9talliques par des argiles produits de l&#039;\u00e9rosion de granits.<\/p>\n<p>&#160;La raret\u00e9 des terres-rares n&#039;est donc pas, une fois de plus, v\u00e9rifi\u00e9e&#8230;mais nos perspicaces et pr\u00e9cautionneux parlementaires pourront en interdire l&#039;exploitation dans les eaux fran\u00e7aises&#8230; pour ne pas r\u00e9veiller la maman du poisson. Allez savoir!<\/p>\n<p>LIRE <a href=\"http:\/\/techon.nikkeibp.co.jp\/english\/NEWS_EN\/20110705\/193097\/\" target=\"_blank\">le papier r\u00e9sumant cette formidable d\u00e9couverte<\/a>.<\/p>\n<p>&#160;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#160;Certains fonds marins du Pacifique dont ceux autour de la Polyn\u00e9sie fran\u00e7aise, sont recouverts de boues tr\u00e8s riches en terres-rares d\u00e9voile une \u00e9quipe japonaise de prospection de l&#039;Universit\u00e9 de Tokyo. A partir de l&#039;analyse de pr\u00e9l\u00e8vements de boue r\u00e9alis\u00e9s par carottage en divers points du Pacifique entre 3500 et 6000 m\u00e8tres de profondeur cette \u00e9quipe [&hellip;]<\/p>\n","protected":false},"author":341,"featured_media":22900,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-120","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Japon: des boues tr\u00e8s riches en terres-rares recouvrent certains fonds du Pacifique - leblogenergie.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2011\/07\/06\/japon-des-boues-tres-riches-en-terres-rares-recouvrent-certains-fonds-du-pacifique\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Japon: des boues tr\u00e8s riches en terres-rares recouvrent certains fonds du Pacifique - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"&#160;Certains fonds marins du Pacifique dont ceux autour de la Polyn\u00e9sie fran\u00e7aise, sont recouverts de boues tr\u00e8s riches en terres-rares d\u00e9voile une \u00e9quipe japonaise de prospection de l&#039;Universit\u00e9 de Tokyo. 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