Show simple item record

dc.contributor.advisorLyons, Michaelen
dc.contributor.authorDevane, James Eoinen
dc.date.accessioned2021-04-15T09:07:24Z
dc.date.available2021-04-15T09:07:24Z
dc.date.issued2021en
dc.date.submitted2021en
dc.identifier.citationDevane, James Eoin, Comparison of Pyrite Found at the Navan Deposit, Tara Mines, Ireland, with 95% Pure Commercially Available Pyrite, Trinity College Dublin.School of Chemistry, 2021en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/96056
dc.descriptionAPPROVEDen
dc.description.abstractA study was conducted to compare the morphological, chemical, crystallographic, and froth flotation characteristics of pyrite found in the Navan deposit and processed at Boliden Tara Mines, Ireland, with 95% pure pyrite from a natural source, sold by a chemical supplier. Microscopy, X-ray, and mass spectrometry techniques were employed, along with a laboratory froth flotation test. Microscopy techniques (reflective light microscopy, SEM) were used to determine the grain sizes of Navan pyrite, which were found to be >212 ?m, compared to the largest commercial pyrite grain sizes of >425 ?m. Texturally, the commercial pyrite was observed to be euhedral, whereas the Navan pyrite was seen to be subhedral with a strong presence of framboidal pyrite. X-ray analysis (XRF, XRD, and SEM-EDX) demonstrated the claimed >95% purity level of the commercial pyrite sample. The commercial pyrite crystal structure was examined via single-crystal XRD. P-XRD analysis established the preferred orientation of the commercial pyrite. For Navan pyrite, P-XRD identified other Fe-bearing phases, including marcasite. SEM-EDX analysis showed the S/Fe ratio of both commercial and Navan pyrite. SEM-EDX was also used to perform a qualitative liberation study on the Navan pyrite. LA-ICP-MS was used to estimate the trace element composition of commercial pyrite, and identified inclusions in the Navan pyrite. Laboratory froth flotation tests showed that commercial pyrite floated readily in the presence of Cu2+ ions. The Navan and commercial pyrites were found to have differences in grain size and crystal habit, trace element composition, and to perform differently in flotation tests. However, this analysis showed that neither the Navan nor the commercial pyrite are sulfur-deficient. This work was carried out in laboratories at Boliden Tara Mines, Navan, Ireland, and Trinity College Dublin, Ireland, between February 2018 and February 2020.en
dc.publisherTrinity College Dublin. School of Chemistry. Discipline of Chemistryen
dc.rightsYen
dc.subjectPyriteen
dc.subjectSEMen
dc.subjectXRFen
dc.subjectSEM-EDXen
dc.subjectX-ray crystallographyen
dc.subjectSphaleriteen
dc.subjectGalenaen
dc.subjectBariteen
dc.subjectFlotationen
dc.titleComparison of Pyrite Found at the Navan Deposit, Tara Mines, Ireland, with 95% Pure Commercially Available Pyriteen
dc.typeThesisen
dc.contributor.sponsorEuropean Union (EU)en
dc.type.supercollectionthesis_dissertationsen
dc.type.supercollectionrefereed_publicationsen
dc.type.qualificationlevelMasters (Research)en
dc.identifier.peoplefinderurlhttps://tcdlocalportal.tcd.ie/pls/EnterApex/f?p=800:71:0::::P71_USERNAME:JDEVANEen
dc.identifier.rssinternalid227218en
dc.rights.ecaccessrightsopenAccess


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record