Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modeling
The aim of this paper is to delineate the different lead–zinc mineralized zones in the Zardu area of the Kushk zinc–lead stratabound SEDEX deposit, Central Iran, through concentration–volume (C–V) modeling of geological and lithogeochemical drillcore data. The geological model demonstrated that the...
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| Format: | Article |
| Language: | English |
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De Gruyter
2016-02-01
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| Series: | Open Geosciences |
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| Online Access: | https://doi.org/10.1515/geo-2016-0014 |
| _version_ | 1818594471750664192 |
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| author | Dahooei Ahmad Heidari Afzal Peyman Lotfi Mohammad Jafarirad Alireza |
| author_facet | Dahooei Ahmad Heidari Afzal Peyman Lotfi Mohammad Jafarirad Alireza |
| author_sort | Dahooei Ahmad Heidari |
| collection | DOAJ |
| description | The aim of this paper is to delineate the different lead–zinc mineralized zones in the Zardu area of the Kushk zinc–lead stratabound SEDEX deposit, Central Iran, through concentration–volume (C–V) modeling of geological and lithogeochemical drillcore data. The geological model demonstrated that the massive sulfide and pyrite+dolomite ore types as main rock types hosting mineralization. The C–V fractal modeling used lead, zinc and iron geochemical data to outline four types of mineralized zones, which were then compared to the mineralized rock types identified in the geological model. ‘Enriched’ mineralized zones contain lead and zinc values higher than 6.93% and 19.95%, respectively, with iron values lower than 12.02%. Areas where lead and zinc values were higher than 1.58% and 5.88%, respectively, and iron grades lower than 22% are labelled “high-grade” mineralized zones, and these zones are linked to massive sulfide and pyrite+dolomite lithologies of the geological model. Weakly mineralized zones, labelled ‘low-grade’ in the C– V model have 0–0.63% lead, 0–3.16% zinc and > 30.19% iron, and are correlated to those lithological units labeled as gangue in the geological model, including shales and dolomites, pyritized dolomites. Finally, a log-ratio matrix was employed to validate the results obtained and check correlations between the geological and fractal modeling. Using this method, a high overall accuracy (OA) was confirmed for the correlation between the enriched and high-grade mineralized zones and two lithological units — the massive sulfide and pyrite+dolomite ore types. |
| first_indexed | 2024-12-16T11:00:39Z |
| format | Article |
| id | doaj.art-d86fee12ca2b47be8de570e9f6d511c2 |
| institution | Directory Open Access Journal |
| issn | 2391-5447 |
| language | English |
| last_indexed | 2024-12-16T11:00:39Z |
| publishDate | 2016-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Geosciences |
| spelling | doaj.art-d86fee12ca2b47be8de570e9f6d511c22022-12-21T22:34:01ZengDe GruyterOpen Geosciences2391-54472016-02-018114315310.1515/geo-2016-0014geo-2016-0014Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modelingDahooei Ahmad Heidari0Afzal Peyman1Lotfi Mohammad2Jafarirad Alireza3Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran (Islamic Republic of)Department of Mining Engineering, South Tehran branch, Islamic Azad University, Tehran, Iran; Camborne School of Mines, University of Exeter, Penryn, United Kingdom of Great Britain and Northern IrelandDepartment of Geology, North Tehran branch, Islamic Azad University, Tehran, Iran (Islamic Republic of)Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran (Islamic Republic of)The aim of this paper is to delineate the different lead–zinc mineralized zones in the Zardu area of the Kushk zinc–lead stratabound SEDEX deposit, Central Iran, through concentration–volume (C–V) modeling of geological and lithogeochemical drillcore data. The geological model demonstrated that the massive sulfide and pyrite+dolomite ore types as main rock types hosting mineralization. The C–V fractal modeling used lead, zinc and iron geochemical data to outline four types of mineralized zones, which were then compared to the mineralized rock types identified in the geological model. ‘Enriched’ mineralized zones contain lead and zinc values higher than 6.93% and 19.95%, respectively, with iron values lower than 12.02%. Areas where lead and zinc values were higher than 1.58% and 5.88%, respectively, and iron grades lower than 22% are labelled “high-grade” mineralized zones, and these zones are linked to massive sulfide and pyrite+dolomite lithologies of the geological model. Weakly mineralized zones, labelled ‘low-grade’ in the C– V model have 0–0.63% lead, 0–3.16% zinc and > 30.19% iron, and are correlated to those lithological units labeled as gangue in the geological model, including shales and dolomites, pyritized dolomites. Finally, a log-ratio matrix was employed to validate the results obtained and check correlations between the geological and fractal modeling. Using this method, a high overall accuracy (OA) was confirmed for the correlation between the enriched and high-grade mineralized zones and two lithological units — the massive sulfide and pyrite+dolomite ore types.https://doi.org/10.1515/geo-2016-0014concentration–volume (c–v) fractal modelingzn–pb mineralized zonesgeological modelmassive sulfideskushk sedex deposit |
| spellingShingle | Dahooei Ahmad Heidari Afzal Peyman Lotfi Mohammad Jafarirad Alireza Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modeling Open Geosciences concentration–volume (c–v) fractal modeling zn–pb mineralized zones geological model massive sulfides kushk sedex deposit |
| title | Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modeling |
| title_full | Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modeling |
| title_fullStr | Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modeling |
| title_full_unstemmed | Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modeling |
| title_short | Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modeling |
| title_sort | identification of mineralized zones in the zardu area kushk sedex deposit central iran based on geological and multifractal modeling |
| topic | concentration–volume (c–v) fractal modeling zn–pb mineralized zones geological model massive sulfides kushk sedex deposit |
| url | https://doi.org/10.1515/geo-2016-0014 |
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