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Pregled bibliografske jedinice broj: 599963

Geochemical characteristics of different iron ore types from the Southern Tomašica deposit, Ljubija, NW Bosnia


Garašić, Vesnica; Jurković, Ivan
Geochemical characteristics of different iron ore types from the Southern Tomašica deposit, Ljubija, NW Bosnia // GEOLOGIA CROATICA, 65 (2012), 2; 255-270 doi:10.4154/gc.2012.16 (međunarodna recenzija, članak, znanstveni)


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Naslov
Geochemical characteristics of different iron ore types from the Southern Tomašica deposit, Ljubija, NW Bosnia

Autori
Garašić, Vesnica ; Jurković, Ivan

Izvornik
GEOLOGIA CROATICA (1330-030X) 65 (2012), 2; 255-270

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
compact limonite ; pulverized limonite ; REE pattern ; siderite ; ankerite ; Southern Tomašica

Sažetak
Pulverized limonite ore from a Pleistocene- Quaternary lake deposit and compact limonite ore from the Olistostrome member of the Javorik flysch formation, in the Southern Tomašica iron ore deposit, were investigated and compared with different types of siderite and ankerite, limestone and carbonate shale from the same location in order to determine their possible protolith. Two limonite types display a notably distinct REE pattern, REE fractionations, Eu anomalies and other trace element and main oxide content. The REE pattern of compact limonite is characterized by relatively low light ((La/Sm)N = 2.87), heavy ((Gd/Yb)N = 0.98) and total ((La/Yb)N = 3.19) REE fractionations, a strong positive Eu anomaly ((Eu/Eu*)N =2.11) and weakly expressed negative Ce anomaly ((Ce/Ce*)N = 0.82). The compact limonite and siderite REE patterns almost overlap suggesting a common REE source. The same is valid for their Zr/TiO2 ratios (0.040 in the compact limonite, 0.033-0.053 in the siderites). Pulverized limonite shows remarkably different REE patterns and the highest REE concentrations, (up to 6 to 13 times higher relatively to the other samples). Its REE fractionation pattern ((La/Sm)N = 3.68 ; (Gd/Yb)N =1.58 ; (La/Yb)N = 9.41, (Eu/Eu*)N = 1.10 and Ce/Ce*N =0.81) is very similar to those in the carbonate shale, identifying it as the possible protolith of pulverized limonite. The same is valid for the Zr/TiO2 ratios (0.025 in pulverized limonite and 0.017 in carbonate shale). The REE pattern of fine grained ankerite ((La/Yb)N = 2.15, (Eu/Eu*)N = 1.95, (Ce/Ce*)N = 0.78) and its Zr/TiO2 ratio (0.030) are similar to those in siderite, and could, assuming extensive contamination of pulverized limonite, also represent its protolith. However, the REE patterns of coarse grained ankerite exhibit remarkable depletion of LREE over HREE and a strong reverse LREE pattern ((La/Yb)N =0.05-0.20 ; (La/Sm)N = 0.04-0.10 ; (Gd/Yb)N =1.77-1.91. They have (similar to the other studied samples), a positive Eu anomaly (Eu/Eu*)N =2.16-2.75) and negative Ce anomaly (Ce/Ce*)N = 0.32-0.83). Their Zr/TiO2 ratio (0.004-0.010) excludes coarse grained ankerite as the possible protolith of pulverized limonite.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekti:
195-1953068-3206 - Magmatizam i mineralna ležišta Dinarskog krškog područja (Garašić, Vesnica, MZOS ) ( POIROT)

Ustanove:
Rudarsko-geološko-naftni fakultet, Zagreb

Profili:

Avatar Url Vesnica Garašić (autor)

Avatar Url Ivan Jurković (autor)

Poveznice na cjeloviti tekst rada:

doi www.geologia-croatica.hr

Citiraj ovu publikaciju:

Garašić, Vesnica; Jurković, Ivan
Geochemical characteristics of different iron ore types from the Southern Tomašica deposit, Ljubija, NW Bosnia // GEOLOGIA CROATICA, 65 (2012), 2; 255-270 doi:10.4154/gc.2012.16 (međunarodna recenzija, članak, znanstveni)
Garašić, V. & Jurković, I. (2012) Geochemical characteristics of different iron ore types from the Southern Tomašica deposit, Ljubija, NW Bosnia. GEOLOGIA CROATICA, 65 (2), 255-270 doi:10.4154/gc.2012.16.
@article{article, year = {2012}, pages = {255-270}, DOI = {10.4154/gc.2012.16}, keywords = {compact limonite, pulverized limonite, REE pattern, siderite, ankerite, Southern Toma\v{s}ica}, journal = {GEOLOGIA CROATICA}, doi = {10.4154/gc.2012.16}, volume = {65}, number = {2}, issn = {1330-030X}, title = {Geochemical characteristics of different iron ore types from the Southern Toma\v{s}ica deposit, Ljubija, NW Bosnia}, keyword = {compact limonite, pulverized limonite, REE pattern, siderite, ankerite, Southern Toma\v{s}ica} }
@article{article, year = {2012}, pages = {255-270}, DOI = {10.4154/gc.2012.16}, keywords = {compact limonite, pulverized limonite, REE pattern, siderite, ankerite, Southern Toma\v{s}ica}, journal = {GEOLOGIA CROATICA}, doi = {10.4154/gc.2012.16}, volume = {65}, number = {2}, issn = {1330-030X}, title = {Geochemical characteristics of different iron ore types from the Southern Toma\v{s}ica deposit, Ljubija, NW Bosnia}, keyword = {compact limonite, pulverized limonite, REE pattern, siderite, ankerite, Southern Toma\v{s}ica} }

Časopis indeksira:


  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati:





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