{"id":302,"date":"2021-04-14T15:21:00","date_gmt":"2021-04-14T13:21:00","guid":{"rendered":"http:\/\/d.r1.wbsprt.com\/kmplg.sk\/?p=302"},"modified":"2023-07-30T21:07:39","modified_gmt":"2023-07-30T19:07:39","slug":"prednaska","status":"publish","type":"post","link":"https:\/\/kmplg.sk\/?p=302","title":{"rendered":"Nefel\u00ednov\u00fd syenit"},"content":{"rendered":"\n<p>Pegmatit nefel\u00ednov\u00e9ho syenitu z\u00a0lokality Chibiny na Kolskom polostrove v\u00a0Rusku. Hrubozrnn\u00fd pegmatit je zlo\u017een\u00fd z\u00a0alkalick\u00e9ho amfibolu &#8211; astrofylitu (hned\u00fd), alkalick\u00e9ho pyrox\u00e9nu &#8211; egir\u00ednu (zelen\u00fd) a\u00a0eudialytu (ru\u017eov\u00fd). Napriek tomu, \u017ee v pr\u00edrode s\u00fa naj\u010dastej\u0161ie zn\u00e1me granitov\u00e9 pegmatity, term\u00edn pegmatit nie je striktne viazan\u00fd len na granitoidn\u00e9 horniny. Ako pegmatit ozna\u010dujeme hrubozrnn\u00fa faneritick\u00fa magmatick\u00fa horninu s\u00a0premenlivou ve\u013ekos\u0165ou z\u0155n, \u010dasto prekra\u010duj\u00facou nieko\u013eko cm, a\u017e dm. Pegmatity s\u00fa v\u00fdznamn\u00fdm ekonomick\u00fdm zdrojom mnoh\u00fdch surov\u00edn. Nefel\u00ednov\u00e9 syenity a\u00a0ich pegmatity s\u00fa na Kolskom polostrove s\u00fa\u010das\u0165ou alkalickej agpaitovej intr\u00fazie \u2013 Chibiny-Lovozero, ktor\u00e1 patr\u00ed k\u00a0najv\u00e4\u010d\u0161\u00edm na svete. Intr\u00fazia Chibiny je star\u00e1 362 mili\u00f3nov rokov, rozklad\u00e1 sa na ploche 1327 km<sup>2<\/sup> a v\u00a0priemere dosahuje 30 km. Varieta nefel\u00ednov\u00e9ho syenitu s\u00a0eudialytom, egir\u00ednom, alkalick\u00fdm amfibolom a\u00a0akces\u00f3riami bohat\u00fdmi na Ti a\u00a0Zr sa ozna\u010duje ako chibinit prv\u00fdkr\u00e1t op\u00edsan\u00fd z\u00a0lokality Chibiny. Vzorku daroval D. Hovorka.\u00a0\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pegmatit nefel\u00ednov\u00e9ho syenitu z\u00a0lokality Chibiny na Kolskom polostrove v\u00a0Rusku. Hrubozrnn\u00fd &hellip; <\/p>\n","protected":false},"author":4,"featured_media":319,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"ngg_post_thumbnail":0},"categories":[16],"tags":[],"post_folder":[73],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nefel\u00ednov\u00fd syenit - Katedra mineral\u00f3gie, petrol\u00f3gie a lo\u017eiskovej geol\u00f3gie<\/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:\/\/kmplg.sk\/?p=302\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nefel\u00ednov\u00fd syenit - Katedra mineral\u00f3gie, petrol\u00f3gie a lo\u017eiskovej geol\u00f3gie\" \/>\n<meta property=\"og:description\" content=\"Pegmatit nefel\u00ednov\u00e9ho syenitu z\u00a0lokality Chibiny na Kolskom polostrove v\u00a0Rusku. 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