Mineralni sastav zelenih nakupina iz vulkanoklastičnih stijena Donjeg Jesenja

undergraduate thesis

• Title (english): Mineral composition of green masses in Donje Jesenje volcanoclastic rocks
• Author: Lovro Šarić
• Mentor: Darko Tibljaš (mentor)
• Committee member: Darko Tibljaš (predsjednik povjerenstva)
• Committee member: Nenad Tomašić (član povjerenstva)
• Committee member: Đurđica Pezelj (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2021-07-15, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology

Abstract

U ovome radu analiziran je mineraloški sastav zelenih nakupina iz miocenskih zeolitiziranih tufova iz kamenoloma Donjega Jesenja. Naslage predstavljaju piroklastite koji su taloženi u miocenskom bazenu Hrvatskog zagorja. Korištene su optičke metode analize uzoraka pomoću lupe, kvalitativna (te semi- kvantitativna) metoda rendgenske difrakcije na praškastome uzorku (PXRD) te žarenje uzorka radi razlikovanja minerala heulandita od klinoptilolita, koji tvore seriju čvrstih otopina. Identificirani... More su minerali iz skupine zeolita (klinoptilolit, heulandit), različiti minerali iz skupine feldspata, opal – CT, biotit, a zeleni mineral na kojem je zapravo bilo težište rada determiniran je kao seladonit. Minerali su interpretirani kao produkti devitrifacijskoga procesa vulkanskoga stakla pod utjecajem vodenoga medija. Less

Abstract (english)

In this work, analysis of the mineralogical composition of Miocene aged zeolite bearing tuffs from the Donje Jesenje quarry was carried out. The analysed deposits represent pyroclastic sedimentation during the Miocene period in the Hrvatsko Zagorje Basin. Optical analysis was carried out using a magnifier whilst the qualitative and semi – quantitative chemical analysis was carried out using X- ray powder diffraction (PXRD). Due to the possible presence of heulandite, wich forms a solid... More solution series with clinoptilolite, calcination was carried out on the samples to be able to distinguish them from one another. Identified minerals belong to the zeolite group (clinoptilolite, heulandite), Opal- CT, feldspars, biotite and the green mica of interest is identified as being a mineral from the celadonite group. The identified minerals are interpreted as being alteration products during the devitrification process of volcanic glass in interaction with aqueous media. Less

• Keywords: mineraloški sastav; rendgenska difrakcija na praškastom uzorku (PXRD); vulkanoklastične naslage; filosilikati; zeoliti; žarenje
• Keywords (english): mineralogical composition; powder X- ray diffraction (PXRD); volcanoclastic deposits; phyllosilicates; zeolites; calcination
• Language: croatian
• URN:NBN: urn:nbn:hr:217:346802
• Study programme: Title: Geology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) geologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-02-07 07:23:45