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Volume 7, Issue 3 (11-2024)
KCR 2024, 7(3): 29-38 |
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Kamali A. Research Paper
Reconstruction of Ancient Zinc Extraction Technology in Iran: Geochemical and Petrographic Analysis of Ceramic Nails and Smelting Slags from Bahabad, Yazd. KCR 2024; 7 (3) :29-38
URL: http://journal.richt.ir/kcr/article-1-222-en.html
URL: http://journal.richt.ir/kcr/article-1-222-en.html
Abstract: (2531 Views)
The Bahabad zinc smelting site, located 71 km north of Bahabad in Yazd Province, Iran, spanning 220 m² within the Tabas-Posht-e-Badam metallogenic belt, is a key ancient metallurgical center. This study aims to identify the extracted metal, analyze metallurgical processes, and reconstruct the employed technologies through petrographic and geochemical analyses of ceramic nails and furnace slags. Thirty ceramic nails and 20 slag samples were collected, with five samples from each group selected for petrographic study and chemical analysis using inductively coupled plasma optical emission spectroscopy (ICP-OES). Petrographic results revealed that the ceramic nails, made from fired clay, exhibit a porphyritic texture with ~20% quartz and minor calcite, while slags contain fayalite (Fe₂SiO₄), melilite, pyroxene, and wüstite (FeO), indicating high-temperature, reducing conditions. Chemical analysis showed an average of 1.21% ZnO in nails, confirming their role in collecting zinc vapors as tutia (ZnO) over centuries, and 3.74% ZnO in slags, suggesting incomplete zinc extraction. Low lead (669 ppm in nails, 315 ppm in slags) and sulfur (1053 ppm in nails, 361 ppm in slags) concentrations indicate the use of oxidized ores like smithsonite (ZnCO₃) or hemimorphite rather than sulfides like sphalerite (ZnS), consistent with the region’s oxidized lead-zinc deposits. Two-tier furnaces, with a lower heating chamber and an upper perforated clay plate holding ceramic nails (10–20 cm long, 2–4 cm diameter), facilitated upward distillation. This technology contrasts with India’s downward distillation (sphalerite, square furnaces) and China’s condenser-based upward method (rectangular furnaces), highlighting Iran’s indigenous innovation using charcoal and ceramic nails. The study underscores the technology’s adaptation to local conditions and its significance in global metallurgical history.
Type of Study: Research, Original, Regular |
Subject:
Application of modern sciences, technologies, equipment, materials and methods
Accepted: 2024/11/30 | Published: 2024/11/30
Accepted: 2024/11/30 | Published: 2024/11/30
References
1. Aqili Khorasani. (1992). Makhzan al-Adviyeh. Tehran: Islamic Revolution Education Publishing.
2. Bonnin, J. (1924). The history of zinc smelting in Europe. Journal of Metallurgical Studies, 12(3), 45–67.
3. Craddock, P. T., Eckstein, K., & Meeks, N. D. (1983). Zinc production in medieval India: The evidence from Zawar, Rajasthan. Antiquity, 57(220), 180–187.
4. Day, J. (1998). Bristol brass and the development of the zinc industry in England. Historical Metallurgy, 32(2), 115–130.
5. Freestone, I. C., Middleton, A. P., & Craddock, P. T. (1985). Early zinc smelting techniques in India and their implications for European industry. Journal of Archaeological Science, 12(4), 305–317.
https://doi.org/10.1016/0305-4403(85)90003-8
6. Ghorbani, M. (2013). The economic geology of Iran:Mineraldepositsandnaturalresources.Springer. https://doi.org/10.1007/978-94-007-5625-0
7. Ibn Sina. (1991). The Canon of Medicine. Tehran: Soroush.
8. Ibn Sina. (1991). The Canon of Medicine. Tehran: Soroush.
9. Kamali, A. A. (2022). Mining and ancient metalworking studies in cultural heritage: Recognizing values and the necessity of preservation. Knowledge of Conservation and Restoration, 5(1), 81–89.
10. Kashani, A. (1974). Arayis al-Jawahir wa Nafayis al-Atayib (Edited by I. Afshar). Tehran: National Heritage Association Publications.
11. Khojasteh Behzadi, N., Mafi, F., & Emami, S. M. (2023). The study of mining and metallurgy in the central part of BamCounty based on archaeological
surveys and historical sources. Journal of
Archaeological Studies, 15(2), 57–73. https://doi.
org/10.22059/jarcs.2023.358920.143203
12. Mustawfi, H. (1983). Nuzhat al-Qulub. Tehran: Tahuri Library.
13. Polo, M. (1903). The book of Ser Marco Polo, the Venetian, concerning the kingdoms and marvels of the East (Vol. 2). Scribner.
14. Qazvini, Z. M. (1987). Athar al-Bilad wa Akhbar al-Ibad (Translated by A. Sharafkandi). Tehran: Young Thought Scientific Institute.
15. Rajabi, A., Rastad, E., & Canet, C. (2012). Metallogeny of Cretaceous carbonate-hosted College London]. UCL Discovery
16. Rajabi, A., Rastad, E., & Canet, C. (2012). Metallogeny of Cretaceous carbonate-hosted Zn–Pb deposits of Iran: Geotectonic setting and data integration for future mineral exploration. International Geology Review, 54(14), 1649–1672. https://doi.org/10.1080/00206814.2012.659110
17. Rajabi, A., Rastad, E., & Canet, C. (2013). Metallogeny of Permian–Triassic carbonatehosted Zn–Pb and F deposits of Iran: A review for future mineral exploration. Australian Journal of Earth Sciences, 60(2), 197–216. https://doi.org/10.1080/08120099.2012.754792
18. Rajabi, A., Rastad, E., & Canet, C. (2015a). The early Cambrian Chahmir shale-hosted Zn–Pb deposit, Central Iran:An example of vent-proximal SEDEX mineralization. Mineralium Deposita, 50(5), 571–594. https://doi.org/10.1007/s00126-014-0556-x
19. Rajabi, A., Rastad, E., Alfonso, P., & Canet, C. (2012a).Geology,ore facies,and sulphurisotopesof the Koushk vent-proximal sedimentary-exhalative
deposit, Posht-e-Badam Block, Central Iran. International Geology Review, 54(14), 1635–1648. https://doi.org/10.1080/00206814.2012.659106
20. Thornton, C. P. (2007). Of brass and bronze in prehistoric Southwest Asia. In Metals and mines: Studies in archaeometallurgy (pp. 123–135). Archetype Publications.
21. Thornton, C. P., & Tuttle, O. F. (1960). Chemistry of igneous rocks Part 1: Differentiation index. American Journal of Science, 258(9), 664–684. https://doi.org/10.2475/ajs.258.9.664
22. Zhou, W. (2012). Distilling zinc in China: The technology of large-scale zinc production in Chongqing during the Ming and Qing Dynasties (AD 1368–1911) [Doctoral dissertation, University
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