{"id":586,"date":"2023-02-14T11:01:05","date_gmt":"2023-02-14T10:01:05","guid":{"rendered":"http:\/\/www.krantz.unipr.it\/?post_type=product&#038;p=586"},"modified":"2023-02-14T11:09:57","modified_gmt":"2023-02-14T10:09:57","slug":"496-lherzolite-2","status":"publish","type":"product","link":"http:\/\/www.krantz.unipr.it\/index.php\/prodotto\/496-lherzolite-2\/","title":{"rendered":"496-Lherzolite"},"content":{"rendered":"<p><strong>DESCRIZIONE:<\/strong><\/p>\n<p>Si tratta di una roccia ultramafica ignea, olocristallina composta dal 60 al 90% di olivina con una rilevante presenza di ortopirosseni e, in quantit\u00e0 inferiore, clinopirosseni cromiferi. Altri minerali sono presenti tra cui lo spinello cromifero e alluminifero e i granati.<br \/>\nI plagioclasi possono essere presenti nelle lherzoliti e in altre peridotiti che cristallizzano a (relativamente) bassa profondit\u00e0 (20 \u2013 30 km). A profondit\u00e0 maggiori il plagioclasio \u00e8 instabile e viene sostituito dallo spinello. Alla profondit\u00e0 di circa 90 km, il granato piropo \u00e8 la fase alluminiosa stabile. La lherzolite granatifera \u00e8 il costituente principale del mantello superiore terrestre (fino a circa 400 km di profondit\u00e0).<br \/>\nLe Lherzoliti costituiscono la parte inferiore delle sequenze ofiolitiche dei massicci alpini peridotitici (pi\u00f9 spesso sostituite da harzburgiti), si ritrovano nelle zone di frattura adiacenti alle dorsali oceaniche, e come xenolite nelle kimberliti e nei basalti alcalini. La fusione parziale delle lherzoliti \u00e8 una delle fonti primarie di magma basaltico. (fonte wikipedia)<\/p>\n<p><strong>VISTA A 360\u00b0<\/strong><\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.krantz.unipr.it\/360\/496-Lherzolite\/496-Lherzolite.html\" width=\"1100\" height=\"700\"><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; 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Studi recenti (2009) considerano la lherzolite di questa localit\u00e0 una rifertilizzazione di harzburgiti dovuta a liquidi magmatici e non una lherzolite primaria del mantello. (fonte wikipedia)<\/p>\n<p><b><span data-contrast=\"auto\">Descrizione\u00a0<\/span><\/b><b><span data-contrast=\"auto\">microfoto<\/span><\/b><b><span data-contrast=\"auto\">:<br \/>\n<\/span><\/b><\/p>\n<p><strong>prima immagine:\u00a0<\/strong>Cristalli di olivina (incolore), cromite (verde-marrone) e pirosseno (lievemente beige). Immagine a N\/\/, 2x (lato lungo = 7mm)<\/p>\n<p><strong>seconda immagine:\u00a0<\/strong>Cristalli di olivina, cromite (isotropa) e pirosseno. Immagine a NX, 2x (lato lungo = 7mm)<\/p>\n<p><strong>terza immagine:\u00a0\u00a0<\/strong>Cristalli di olivina (incolore), cromite (verde-marrone) e pirosseno (lievemente beige). Immagine a N\/\/, 2x (lato lungo = 7mm)<\/p>\n<p>Sezioni sottili fonte http:\/\/www.alexstrekeisen.it<\/p>\n","protected":false},"featured_media":587,"template":"","meta":{"_lmt_disableupdate":"","_lmt_disable":""},"product_cat":[22],"product_tag":[],"class_list":{"0":"post-586","1":"product","2":"type-product","3":"status-publish","6":"product_cat-magmatiche-intrusive","8":"first","9":"outofstock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"http:\/\/www.krantz.unipr.it\/index.php\/wp-json\/wp\/v2\/product\/586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.krantz.unipr.it\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"http:\/\/www.krantz.unipr.it\/index.php\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.krantz.unipr.it\/index.php\/wp-json\/wp\/v2\/media\/587"}],"wp:attachment":[{"href":"http:\/\/www.krantz.unipr.it\/index.php\/wp-json\/wp\/v2\/media?parent=586"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"http:\/\/www.krantz.unipr.it\/index.php\/wp-json\/wp\/v2\/product_cat?post=586"},{"taxonomy":"product_tag","embeddable":true,"href":"http:\/\/www.krantz.unipr.it\/index.php\/wp-json\/wp\/v2\/product_tag?post=586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}