{"id":44650,"date":"2025-02-27T07:32:58","date_gmt":"2025-02-27T07:32:58","guid":{"rendered":"https:\/\/www.hgi-cgs.hr\/?page_id=44650"},"modified":"2025-02-27T08:41:39","modified_gmt":"2025-02-27T08:41:39","slug":"geochemical-insights-and-mineral-resource-potential-of-rare-earth-elements-ree-in-the-croatian-karst-bauxites","status":"publish","type":"page","link":"https:\/\/www.hgi-cgs.hr\/en\/geochemical-insights-and-mineral-resource-potential-of-rare-earth-elements-ree-in-the-croatian-karst-bauxites\/","title":{"rendered":"Geochemical Insights and Mineral Resource Potential of Rare Earth Elements (REE) in the Croatian Karst Bauxites"},"content":{"rendered":"

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NOVOSTI
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Geochemical Insights and Mineral Resource Potential of Rare Earth Elements (REE) in the Croatian Karts Bauxites<\/h2>\n

[\/et_pb_text][et_pb_image src=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2025\/02\/mineralas.jpg” _builder_version=”4.27.4″ _module_preset=”default” title_text=”minerals” align=”center” hover_enabled=”0″ sticky_enabled=”0″ admin_label=”Image” width=”50%”][\/et_pb_image][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” custom_margin=”45px||45px|||” hover_enabled=”0″ locked=”off” global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n

Objavljen je rad pod naslovom \u201e Geochemical Insights and Mineral Resource Potential of Rare Earth Elements (REE) in the Croatian Karst Bauxites \u201c, grupe autora Hrvatskog geolo\u0161kog instituta Erli Kova\u010devi\u0107 Galovi\u0107, Nikolina Ilijani\u0107, Nikola Gizdavec, Slobodan Miko i Zoran Peh. Rad je objavljen u Special Issue Trace Elements in Bauxite Deposits: Critical Georesource and Significant Indicators of Paleoenvironmental Conditions \u010dasopisa otvorenog pristupa Minerals i mo\u017ee se vidjeti na poveznici (https:\/\/www.mdpi.com\/2075-163X\/15\/2\/192<\/a><\/span>).<\/p>\n

Rad se nadovezuje na ranije istra\u017eivanje objvljeno pod naslovom Geochemical records in subaerial exposure environments in Croatia using discriminant function analysis of bauxite data (https:\/\/www.hgi-cgs.hr\/geochemical-records-in-subaerial-exposure-environments-in-croatia-using-discriminant-function-analysis-of-bauxite-data\/<\/a><\/span>).<\/p>\n

Ovaj rad istra\u017euje hrvatske boksitne naslage unutar Jadransko-dinarske karbonatne platforme, s posebnim naglaskom na raspodjelu i oboga\u0107enje elemenata rijetkih zemalja (REE) u osam boksitnih horizonata od trijasa do neogena. Kori\u0161tenjem statisti\u010dkih analiza geokemijskih podataka istra\u017euju se \u010dimbenici koji utje\u010du na distribuciju i frakcionaciju REE. Rezultati ukazuju da sastav i oboga\u0107enje REE ovise o izvornom materijalu, kao i o promjenama paleogeografskih i paleotektonskih uvjeta tijekom formiranja naslaga. Posebno je izra\u017eeno oboga\u0107enje REE u kasnom paleogenu, s najvidljivijim pove\u0107anjem ukupnih REE (\u03a3REE) u boksitnim horizontima srednjeg i gornjeg eocena.<\/p>\n

DFA analiza je provedena na trima skupinama paleogenskih boksita pri \u010demu su boksiti umjesto u tri (paleocenski, srednje eocenski i gornjo eocenski) podijeljeni u \u010detiri zasebne skupine (paleocenski su razdvojeni u jadransku i dinarsku podskupinu). Utvr\u0111eno je da boksiti felzi\u010dnog podrijetla (paleocenski s podru\u010dja Jadrana) sadr\u017ee ni\u017ee koncentracije REE, dok su ostali, podrijetlom iz mafi\u010dnih i ultrama\u010dnih stijena oboga\u0107eni REE, posebno te\u0161kim REE (HREE), kao i popratnim elementima u tragovima (Cr\u2082O\u2083, Ni, V) i glavnim oksidima (P\u2082O\u2085, CaO, MnO). Ovi rezultati upu\u0107uju na mogu\u0107u prisutnost fosfatnih minerala tipi\u010dnih za boksite bogate REE.<\/p>\n

Hrvatske boksitne naslage, uglavnom srednje i male veli\u010dine, povijesno su se eksploatirale povr\u0161inski i podzemno, pri \u010demu je eksploatacija gotovo prestala do 1990. Iako su isplativija le\u017ei\u0161ta pogodnija za podzemnu eksploataciju, moderne tehnologije otvaraju mogu\u0107nosti za obnovu eksploatacije, \u0161to nagla\u0161ava potrebu za daljnjim geolo\u0161kim istra\u017eivanjima.<\/p>\n

Rezultati istra\u017eivanja pokazuju da su hrvatski boksiti, oboga\u0107eni REE i elementima u tragovima, ne samo vrijedni geolo\u0161ki pokazatelji pro\u0161lih klimatskih i tektonskih promjena, ve\u0107 i potencijalni izvori kriti\u010dnih mineralnih sirovina. Studija nagla\u0161ava mogu\u0107nost njihove ekonomske eksploatacije u kontekstu suvremenih tehnolo\u0161kih potreba.<\/p>\n

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NOVOSTIGeochemical Insights and Mineral Resource Potential of Rare Earth Elements (REE) in the Croatian Karts BauxitesObjavljen je rad pod naslovom \u201e Geochemical Insights and Mineral Resource Potential of Rare Earth Elements (REE) in the Croatian Karst Bauxites \u201c, grupe autora Hrvatskog geolo\u0161kog instituta Erli Kova\u010devi\u0107 Galovi\u0107, Nikolina Ilijani\u0107, Nikola Gizdavec, Slobodan Miko i Zoran Peh. […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-44650","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/44650","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/comments?post=44650"}],"version-history":[{"count":7,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/44650\/revisions"}],"predecessor-version":[{"id":44682,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/44650\/revisions\/44682"}],"wp:attachment":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/media?parent=44650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}