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master's thesis
Mineraloške i geokemijske značajke boksita iz ležišta "Mamutovac Ia"
Zagreb: University of Zagreb, Faculty of Science, 2021. urn:nbn:hr:217:194961
Teskera, Dominik
University of Zagreb
Faculty of Science
Department of Geology

Institutional repository: Repository of the Faculty of Science

Cite this document

Teskera, D. (2021). Mineraloške i geokemijske značajke boksita iz ležišta "Mamutovac Ia" (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:194961

Teskera, Dominik. "Mineraloške i geokemijske značajke boksita iz ležišta "Mamutovac Ia"." Master's thesis, University of Zagreb, Faculty of Science, 2021. https://urn.nsk.hr/urn:nbn:hr:217:194961

Teskera, Dominik. "Mineraloške i geokemijske značajke boksita iz ležišta "Mamutovac Ia"." Master's thesis, University of Zagreb, Faculty of Science, 2021. https://urn.nsk.hr/urn:nbn:hr:217:194961

Teskera, D. (2021). 'Mineraloške i geokemijske značajke boksita iz ležišta "Mamutovac Ia"', Master's thesis, University of Zagreb, Faculty of Science, accessed 12 October 2024, https://urn.nsk.hr/urn:nbn:hr:217:194961

Teskera D. Mineraloške i geokemijske značajke boksita iz ležišta "Mamutovac Ia" [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2021 [cited 2024 October 12] Available at: https://urn.nsk.hr/urn:nbn:hr:217:194961

D. Teskera, "Mineraloške i geokemijske značajke boksita iz ležišta "Mamutovac Ia"", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:217:194961

Metadata
TitleMineraloške i geokemijske značajke boksita iz ležišta "Mamutovac Ia"
Title (english)Mineraological and geochemical properties of bauxite in "Mamutovac Ia" deposit
AuthorDominik Teskera
MentorHana Fajković (mentor)
Committee memberHana Fajković (predsjednik povjerenstva)
Committee memberAndrea Čobić (član povjerenstva)
Committee memberBorna Lužar-Oberiter (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Geology)
Zagreb
Defense date and country2021-02-23, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Geology
Mineralogy and Petrology
Abstract
Provedbom istražno-geološkog bušenja na ležištu boksita „Mamutovac Ia“ dobivena je bušotinska jezgra boksita duljine 25 metara. S ciljem ispitivanja geokemijskog i mineraloškog sastava bušotinske jezgre te njegove promjene s dubinom, detaljnije su se analizirala 42 uzorka. Difrakcijom rendgenskih zraka na prahu (XRPD) utvrđeno je kako su glavne mineralne faze u boksitu böhmit, gibbsit, hematit i anatas te da se uz njih pojavljuju faze kaolinita, goethita i rutila. Kombinacijom emisijske i masene spektrometrije s induktivno spregnutom plazmom (ICP-ES/MS) izmjereno je da značajni udio kemijskog sastava čine Al2O3, Fe2O3, SiO2 i TiO2 te da uzorci sadrže koncentracije REE (351,84-812,85 ppm). Iako su koncentracije REE uglavnom povišene u dubljim dijelovima jezgre, primijećeno je kako duž jezgre dolazi do značajne frakcionacije REE. Rezultati mjerenja magnetskog susceptibiliteta (MS) ukazuju na prisutnost superparamagnetičnih minerala u gornjim intervalima jezgre. Dodatne interpretacije i klasifikacije pokazale su ujednačenost jezgre te okarakterizirale glavninu uzoraka kao boksite nastale jakom laterizacijom bazičnih, mafičnih stijena.
Abstract (english)
In order to determine geochemical and mineralogical properties of bauxite deposit “Mamutovac Ia”, along with their distribution pattern, 25 meters-long core was obtained by geological exploration drilling. Subsequently, 42 samples were collected from different parts of the drilling core. The X-ray powder diffraction analysis (XRPD) pattern indicated presence of boehmite, gibbsite, hematite and anatase as main mineral phases and presence of kaolinite, goethite and rutile as additional mineral phases. Results of geochemical analysis obtained by inductively coupled plasma emission/mass spectrometry (ICP-ES/MS) indicated that majority of geochemical content are composed of Al2O3, Fe2O3, SiO2 and TiO2. Also, geochemical analysis indicated significant content of REE (351,84-812,85 ppm). In spite of general enrichment of REE in lower parts of core, significant fractionation of REE along the core was observed. Magnetic susceptibility measurements (MS) determined presence of superparamagnetic minerals in upper part of bauxite core. Common classifications showed consistence of the core and characterized majority of samples as bauxites originated from basic, mafic precursors which underwent strong laterization.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:194961
Study programmeTitle: Graduate university study of Environmental Geology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2023-02-23
Terms of useLicence In copyright icon
Created on2021-04-27 08:19:15