Mineraloška obilježja pojave cinabarita na području Tršća, Gorski kotar

undergraduate thesis

• Title (english): Mineralogical properties of the cinnabar occurrence in Tršće, Gorski Kotar
• Author: Izabel Maria Rajšel
• Mentor: Nenad Tomašić (mentor)
• Mentor: Frane Marković (komentor)
• Committee member: Nenad Tomašić (predsjednik povjerenstva)
• Committee member: Frane Marković (član povjerenstva)
• Committee member: Karmen Fio Firi (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2021-09-20, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

Cilj ovog rada je utvrditi i opisati mineraloška obilježja pojave cinabarita na području Tršća, Gorski kotar. Uzorci su prikupljeni u rovu „Lukin rov“ na području potoka Sokolice te analizirani metodom bojenja karbonata, metodom difrakcije rendgenskog zračenja na prahu (XRPD), promatranjem pod lupom i mikroskopiranjem u prolaznom svjetlu. Dosadašnjim istraživanjima opisane su pojave cinabarita u Tršću te istraživan je utjecaj rudnih pojava žive sjeverozapadnih Dinarida na kvalitetu potočnih sedimenata. Metodama istraživanja utvrđeno je pet mineralnih faza u uzorcima: dolomit, kalcit, kremen, goethit i cinabarit. Metodom bojanja karbonata ustanovilo se da je dolomit matična stijena cinabarita te da kalcitne žile u dolomitu sadržavaju povišeni udio željeza. Minerali goethit, kremen, dolomit i cinabarit utvrđeni su XRPD metodom. Promatranjem pod lupom uočeni su kristali karbonata, kremena i cinabarita. Mikroskopiranjem u prolaznom svjetlu opisane su optičke karakteristike mineralnih faza pri čemu je zaključeno da je dolomitizacija dolomita kasnodijagenetska.

Abstract (english)

The aim of this paper is to determine and describe the mineralogical properties of the cinnabar occurrence in Tršće, Gorski Kotar. Samples were collected in the "Lukin rov" trench in the area of the Sokolica stream and analyzed by carbonate staining, X-ray powder diffraction (XRPD), observation under magnifying glass and optical microscopy. Previous research has described the cinnabar occurrence in Tršće and investigated the impact of ore occurrences of mercury in the northwestern Dinarides on the quality of stream sediments. Five mineral phases were determined by research methods: dolomite, calcite, quartz, goethite, and cinnabar. The carbonate staining method established that dolomite is the parent rock of cinnabar and that the calcite veins in dolomite contain an increased proportion of iron. The minerals goethite, quartz, dolomite, and cinnabar were determined by the XRPD method. Crystals of a carbonate mineral, quartz and cinnabar were observed under a magnifying glass. The optical characteristics of the mineral phases were determined through optical microscopy, further concluding that the dolomite dolomitization was late diagenetic.

• Keywords: mineralogija; cinabarit; Tršće
• Keywords (english): mineralogy; cinnabar; Tršće
• Language: croatian
• URN:NBN: urn:nbn:hr:217:505781
• Study programme: Title: Undergraduate university study of 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: 2022-09-06 09:47:22