Bronze Artifacts Research Articles

호서지역 비파형동검문화의 전개와 교류

The bronze artifacts of Mandolin-shaped Bronze Daggers Culture in Hoseo(湖西) region show a continuous distribution area from the Geumgang to the Mangyeonggang. One or two bronze artifacts are usually excavated from the dwelling site and tombs. This difference in excavated feature is reflected the style or space-time. For example, the stone coffin tomb with ditch or simple pit tombs are natives in the early period, and the wooden coffin tombs with stone-filled are known as foreigns in the late period. There are many weapons such as bronze daggers and bronze spearheads in bronze artifacts. The bronze daggers have various style or type that connect Liaodong, Liaoshi, and Northwest region. The bronze spearheads is identified as a universal short type and a be naturalized long type. In addition, the bronze axes of the northeastern style and the bronze mirror of the northwest style are confirmed. The Mandolin-shaped Bronze Daggers Culture in the Hoseo region underwent four phase of change. During the 1st phase, only narrow bronze daggers are identified alone, and an interaction (distribution) relationship that connects to ‘Liaodong-Northwest-Southwest’ is identified. In the 2nd and 3rd phase, it is replaced by a wide bronze daggers, and bronze spearheads and bronze axes are added. The interaction relationship between ‘Northwest-Northeast’ increases, and bronze weapons is also used as a ritual. During the 4th phase, transitional models such as the straight-edged bronze daggers and dagger pommel fitting, bronze mirror, and half-moon-shaped jade appear. This shows that the interaction relationship between ‘Liaodong-Northwest-(Central)-Southwest-’ was further strengthened during the settlement of the Jeongjiawazhi assemblage.

몽골 카라코룸의 네스토리우스파 기독교유적 연구

This paper examines the possibility that a complex architectural site, excavated by the Mongol-German joint research team from 2006 to 2009, located in the northern outskirts of Karakorum, may have been a Nestorian Christian church. The rectangular complex, surrounded by earthen-walls, can be divided into two phases based on the building's layout and overlapping architectural features. The initial structure within the complex had a unique configuration, with a large room at the front directly connected to a smaller room at the back, situated centrally within the walled area. Unlike traditional Mongolian architecture, which typically faces south, this building faced east, and it is notable for having an altar in the smaller rear room. Artifacts found at the site include fragments of a cross, characteristic of Nestorian Christianity, and bronze artifacts resembling candlesticks popular in medieval Europe. These findings strongly suggest that the site was a Nestorian Christian church during the Mongol Empire. The site's location in the northern outskirts of Karakorum aligns with the description of a Nestorian Christian church in William of Rubruck’s book. Additionally, the basic rectangular layout with a niche(apse) at the end containing an altar, as found in Central Asian Nestorian churches, further supports this identification. Radiocarbon dating indicates that the church was constructed in the early 13th century. The excavation revealed that the church was destroyed by fire. However, after the church's destruction, three tiled buildings with a different layout were immediately erected on the site. The structure and artifacts suggest that these buildings were likely a Buddhist temple. Additionally, a significant number of cattle horns were found inside the side buildings, suggesting that specific ritual activities took place at this location.

Non-invasive characterization of the manufacturing process of a Nuragic bronze statuette: a Neutron Imaging study

The Nuragic civilization (Sardinia, Italy, XVIII–VIII Cen. B.C) developed a flourishing bronze metallurgy. The production of Nuragic bronze figurines from Sardinia represents a rich historical archive that provides key information about the iconography, the metal production and casting techniques, and on the development of metallurgy in the Mediterranean basin. Since the question about their manufacturing method remains without definitive answer, the understanding of the Sardinian bronze metallurgy is essential to determine which manufacturing techniques were employed to produce complex bronze artefacts. In the frame of a wider research project relating to Nuragic bronzes, four artefacts, three anthropomorphic statuettes (a warrior, a priestess, and an offering figure), and one miniature of a basket, were made available by Museo Nazionale Preistorico “L. Pigorini” (Roma, IT). In this work we present the results of the analyses conducted on a bronze figurine depicting an iconic type of Nuragic figure: the Priestess. The analysis was performed using White Beam Neutron Tomography (NT) and Bragg Edge Neutron Transmission (BENT) at the Paul Scherrer Institut (PSI) (Villigen, CH). Neutron techniques are nowadays the only available approach for revealing, non-destructively and with good spatial resolution, the morphological and microstructural properties within the whole volume of solid cast metallic artefacts such as this bronze statuette. This work presents the result of a non-invasive analytical investigation on an archaeological bronze artefact, providing outstanding results: from a quantitative analysis of the composition to an in-depth morphological and microstructural analysis capable of unveiling details on the ancient casting methods of the statuette.

Analysis on the Ancient Bronze Cooking Outils Excavated from Historic Site of Anti-Mongolian Struggle in Hangpaduri, Jeju

The microstructure of ancient bronze cooking outil excavated in historic site of anti-Mongolian struggle in Hangpaduri was analyzed to confirm various manufacturing techniques. Bronze spoon and bronze ladles were made by alloying only copper and tin, and the alloy ratio included approximately 22% tin in the copper composition of the forged high tin bronze. The manufacturing process of forged high tin bronze technology, which commonly involves high-temperature forging and final finishing with quenching, was performed. In addition, the sulfide elongated in the longitudinal direction shows that the copper material supplied to the metal may be copper ore containing sulfur such as chalcopyrite and chalcocite. The three bronzewares were made using a binary alloy of copper-tin and a ternary alloy of copper-tin-lead, respectively. Manufacturing techniques using a binary alloy of copper-tin are divided into a forged high tin bronze technique using a hammering and quenching process and a manufacturing technique system of quenching after casting into a shape. Bronze bowl made using a ternary alloy of copper-tin-lead contain 11 wt% tin and 9 wt% lead in the main metal of copper. The lead contained in large quantities is formed in an uneven size within the microstructure, and shows the characteristic of sulfide being distributed around the lead. In addition, there are no traces of additional processing or heat treatment such as quenching. Therefore, it can be seen that the work process was completed by casting the shape. The results of the microstructure analysis show various manufacturing technology systems applied to the bronze cooking outils from historic site of anti-Mongolian struggle in Hangpaduri, Jeju. In particular, through comparison with bronze artifacts utensils excavated from other regions of the Sambyeolcho’s historic site, the possibility of bronze being introduced due to the migration of the Sambyeolcho was confirmed.

북한지역 비파형동검문화의 확산과 그 배경 - 기후·금속문명·교류 관점에서

It is necessary to utilize the results of research studies in neighboring regions for research on the Mandolin-shaped Bronze Daggers culture in North Korea. changes in climate and exchange relations identified in the process of forming and spreading the 'metal civilization', represented by the Mandolin-shaped Bronze Daggers culture, are noted as factors that cause cultural change. In particular, the climate cold in Northeast Asia is drawing attention as a breakthrough in the formation of the Mandolin-shaped Bronze Daggers culture and a change to the Slender Bronze Daggers culture. In the North Korean region, the regional characteristics of the South and the North are confirmed based on the Cheongcheon River, respectively, and the regional characteristics of the East and the West are highlighted based on the central mountainous region. Considering the sort and type of bronze artifacts and the ratio of alloy components, it can be seen that northwestern Korea and northeast Korea had a differentiated network or interaction due to their strong connection to Liaodong and Jilin, respectively. In the North Korean region, internal and external interactions increase, and exchange relations are further strengthened after the spread of the Zhengjiawazi Assemblage (6th~5th B.C.E). Due to the spread of the Zhengjiawazi Assemblage, the metal culture in North Korea changes from the Liaodong style to the Liaoxi (or Liaozhong) style, and accordingly, the exchange and ideological system of he Mandolin-shaped Bronze Daggers culture is also changed. The rapid increase of Liaozhong style’s bronze artifacts such as the bronze daggers and bronze mirrors is closely related to the growth of polity such as 'Gojoseon'.

Photo-induced passivation: A new corrosion mitigation strategy for bronze artefacts

The corrosion behaviors of four ternary Cu-Sn-Pb alloys with varying tin contents were investigated to determine the impact of tin content on the photo-induced corrosion of bronze. Photo-induced passivation, which effectively inhibits corrosion, was observed in all the investigated Cu-Sn-Pb alloys, even those with relatively low tin content, and a possible mechanism was proposed. Based on these findings, photo-induced passivation treatment was applied to two types of artificially patinated bronzes, achieving inhibition efficiencies of up to 82 % and 93 %. This method offers a novel corrosion mitigation strategy for bronze artifacts, capable of avoiding contamination of archaeological artifacts by foreign substances.

Reinforced protection of fragile bronze cultural relics based on nano-cuprammonium fiber material

Bronze artifacts often suffer from “bronze disease” due to the presence of chloride ions, which result from copper chlorides forming on their surfaces during storage. Therefore, reinforced protection is essential for these unearthed cultural artifacts, and new materials for the reinforced protection of fragile bronzes are urgently needed. In this study, cuprammonium solvent and nanocellulose (CNC) were utilized as reinforcement materials to protect fragile bronzes. The chemical and aesthetic properties before and after reinforcement were analyzed using ultra-depth field microscopes, SEM-EDX, XRD, and Raman spectroscopy. The results indicated that at a nano-cuprammonium reinforcer concentration of 2.5 mol/L, the optimal reinforcement effect on simulated bronze powdery rust samples was achieved.Mechanical strength increased by an average of 77.59%. The mass growth rate reached 84.8%, while the color difference ΔE\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\Delta E$$\\end{document} remained below 4.0. Additionally, aging resistance significantly improved, aligning with cultural artifact protection standards.Meanwhile, a compact and stable protective membrane formed on the surface of the bronzes, isolating the bronze matrix from direct contact with the external environment, which delayed bronze corrosion and contributed to long-term stable preservation.Graphical

Corrosion Mechanisms and Conservation Strategies for Marine Recovered Bronze Artifacts: Insights from the Nanhai No. 1 Shipwreck

Corrosion Mechanisms and Conservation Strategies for Marine Recovered Bronze Artifacts: Insights from the Nanhai No. 1 Shipwreck

What kind of corrosion products are “black spots”? —Effects of reduced sulfur compounds on corrosion of bronze artefacts

While deterioration due to the generation of “black spots” is reported, consensus on the specific corrosion products comprising black spots and underlying deterioration mechanisms is lacking. This study investigated the deterioration of copper objects by analysing the black spots that appeared on them and proposes environmental conditions to suppress the appearance of black spots. Bronze artefacts excavated from a marine archaeological site, on which black spots were generated, were closely observed, and investigated. First, X-ray fluorescence and micro-X-ray diffraction analyses were performed on a bronze artefact, from which the black spots were removed, to determine the composition of the artefact. Second, to investigate the composition of the black spots, fine structure analysis of the black spots on the fine fragments of the bronze artefacts was conducted using scanning and transmission electron microscopy, energy dispersive X-ray spectroscopy, and electron diffraction (ED) analysis. The results indicate that the black spots were partially composed of metallic copper and a fine particle mixture of Cu2S and CuSO4. These results imply that the transformation of copper sulfide to metallic copper may have played an important role in the initiation and propagation of black spots. In this study, ED analysis was performed on the microscopic area of the black spots; no amorphous phases were detected, and all observed phases were identified as crystalline materials. To determine the sources of gas-phase sulfur compounds that cause black spots, H2S and carbonyl sulfide (COS) emissions from a spherical clay artefact (a cannon ball with gunpowder excavated from an underwater archaeological site) which was exhibited in the same showcase with the bronze artefacts were analysed via gas chromatography. The concentrations of H2S and COS were 0.462 and 8.636 ppb, respectively; these are significantly higher than those in the lower troposphere. These results indicate that deterioration by black spots occurred because of H2S and COS, which were emitted from the spherical clay artefact excavated from an underwater archaeological site in the exhibition case. In addition, it was confirmed that the inclusion of deoxygenating and dehumidifying agents (RP-AN) in the plastic bag in which the spherical clay artefact was inserted resulted in a significant decrease in the concentration of H2S and COS.

The tin content of lead inclusions in ancient tin-bronze artifacts: a time-dependent process?

In antiquity, Pb was a common element added in the production of large bronze artifacts, especially large statues, to impart fluidity to the casting process. As Pb does not form a solid solution with pure Cu or with the Sn–Cu alloy phases, it is normally observed in the metal matrix as globular droplets embedded within or in interstitial positions among the crystals of Sn-bronze (normally the α phase) as the last crystallizing phase during the cooling process of the Cu–Sn–Pb ternary melt. The disequilibrium Sn content of the Pb droplets has recently been suggested as a viable parameter to detect modern materials [Shilstein, Berner, Feldman, Shalev & Rosenberg (2019). STAR Sci. Tech. Archaeol. Res. 5, 29–35]. The application assumes a time-dependent process, with a timescale of hundreds of years, estimated on the basis of the diffusion coefficient of Sn in Pb over a length of a few micrometres [Oberschmidt, Kim & Gupta (1982). J. Appl. Phys. 53, 5672–5677]. Therefore, Pb inclusions in recent Sn-bronze artifacts are actually a metastable solid solution of Pb–Sn containing ∼3% atomic Sn. In contrast, in ancient artifacts, unmixing processes and diffusion of Sn from the micro- and nano-inclusions of Pb to the matrix occur, resulting in the Pb inclusions containing a substantially lower or negligible amount of Sn. The Sn content in the Pb inclusions relies on accurate measurement of the lattice parameter of the phase in the Pb–Sn solid solution, since for low Sn values it closely follows Vegard's law. Here, several new measurements on modern and ancient samples are presented and discussed in order to verify the applicability of the method to the detection of modern artwork pretending to be ancient.

Research on Cultural and Creative Product Design of Bengbu Museum Based on Bronze Artifacts

By analyzing the historical background and cultural value of Bengbu bronzes, combining with modern design concepts and market demand, we excavate the connotation of bronze culture, combine it with contemporary lifestyle, and create cultural and creative products with regional characteristics and the spirit of the times, in order to promote the innovation and inheritance of traditional culture, and to enrich the people's aesthetic experience and way of life.

Microstructure and Chlorine Ion Corrosion Performance in Bronze Earring Relics.

Chlorine ions play an important role in the corrosion of bronzeware. This study employs techniques such as XRD, OM, SEM, EBSD, and electrochemical testing to analyze the microstructure, crystal structure, chemical composition, and corrosion performance of bronze earrings unearthed at the Xindianzi site in Inner Mongolia. The results indicate the presence of work-hardened structures, including twinning and equiaxed crystals, on the earrings' surface. With an increase in chloride ion concentration in NaCl solutions from 10-3 mol/L to 1 mol/L, the corrosion current density of the bronze earrings increased from 2.372 × 10-7 A/cm2 to 9.051 × 10-7 A/cm2, demonstrating that the alloy's corrosion rate escalates with chloride ion concentration. A 3-day immersion test in 0.5% NaCl solution showed the formation of a passivation layer of metal oxides on the earrings' surface. These findings underscore the significance of the impact chloride ions have on the corrosion of copper alloys, suggesting that activating the alloy's reactive responses can accelerate the corrosion process and provide essential insights into the corrosion mechanisms of bronze artifacts in chloride-containing environments.

Study on the Bronze Weapons Excavated from Xichuan, China

The collection of twelve bronze artifacts discovered in Xichuan provides invaluable historical insights into the Warring States period (476 BC to 221 BC) of ancient China. To investigate their fabrication techniques and current state of preservation, a comprehensive analysis was conducted using a metallographic microscope, a scanning electron microscope, and an electron spectrometer to examine the microstructure and elemental composition of the artifacts. The findings revealed that the copper content in these bronze artifacts varied between 41.82% and 87.95%, the tin content ranged from 6.79% to 46.88%, and the lead content was less than 28.96%. The microstructure exhibited an α-solid-solution dendritic-crystal-segregation structure, with a substantial amount of (α + δ) eutectic distributed in an island-like pattern. Lead was dispersed unevenly, appearing as small granules and large ellipsoids. The composition of these weapons aligned with their intended use, adhering to the manufacturing standards of traditional Chinese bronzes. However, their state of preservation was suboptimal, necessitating immediate protective measures. This study contributes physical evidence to the research on early Chinese bronze production and offers scientific guidance for the conservation and restoration of these bronze artifacts.

Non-ferrous metal of the Bronze Age of Northern Kazakhstan: geochemical characteristics and ore base

The chemical composition of 29 copper and bronze artifacts from the sites of the Petrovka and Alakul Cultures located be-tween the Tobol and Ishim Rivers (the burial grounds of Bekteniz and Dzhangildy 5, and the sites of Novonikolskoye 1 and Semioz-ernoye 2; Northern Kazakhstan) were analysed using mass spectrometry with inductively coupled plasma and laser ablation. The sites are 14C dated to the interval between the 19th–17th centuries BC. In the examined sample, the leading metallurgical group with a slight prevalence in both Petrovka and Alakul metals was “pure” copper; the second part of the metal was represented by tin bronzes — low-alloyed (up to 8 wt.% Sn) in the Petrovka, and high-alloyed (Sn up to 21 wt.%) in the Alakul Culture. The statistical analysis of the main components of trace elements in the metal demonstrated a division into six main geochemical groups. Among these, tin bronzes with an uninterpretable copper component (10 specimens), “pure” copper of Ural origin with Fe-Co-Ni-As-Zn correlations (9 specimens), and “pure” copper with polymetallic Sn-Pb-As-Ag-Se specialization (10 copies), corresponding to the ores of copper deposits of the Kokshetau anticlinorium, can be identified. An overview of the tectonic structures of Northern Ka-zakhstan shows the nearby presence of several porphyry copper and skarn deposits with ancient mines (Imantau, Baksinskoye, Akkan-Burlukskoye, etc.), which likely served as sources of copper ore. Closely associated with these are Greisen and quartz-vein-greisen tin deposits, but there is no reliable information about their use in ancient times. According to the composition of tin alloys in the analysed metal, two main types can be distinguished: tin (without correlation with other impurity elements) when using pure cassiterite, and tin-lead (with increased concentrations and correlation of As, Au, Bi, etc.) when using cassiterite-sulfide ores. The data show the association of the Bronze Age sites of Northern Kazakhstan with the ore and raw materials base in this region, and the intensity of trade exchange of metallurgical products between the Ural and Kazakhstan centers of metal production.

Analysis of Mineralization and Disease Characteristics of Bronzes Unearthed in Archaeology

Bronze artifacts unearthed by archaeologists are affected by underground burial environment and other factors, and most of them have different degrees of corrosion. Bronze artifacts unearthed by archaeologists have different degrees of mineralization. Establishing a data analysis database for basic structure and disease analysis of mineralized bronze artifacts is a necessary prerequisite for developing targeted reinforcement materials and realizing accurate protection. Based on the characteristic analysis of the mineralized bronzes, this paper systematically analyzed the mineralization and disease characteristics of the mineralized bronzes by Confocal Super Depth-of-Field Microscope(CSDTM), scanning electron microscopy (SEM), energy spectrum analysis(EDS) and XRD, and compared and analyzed the microscopic morphology, composition and phase structure of the bronzes under the same burial environment, so as to provide support for subsequent targeted protection and reinforcement.

Combined Scanned Macro X-Ray Fluorescence and Reflectance Spectroscopy Mapping on Corroded Ancient Bronzes

Bronze is an alloy composed primarily of copper and tin and since its discovery is widespread in the whole world. This alloy can thus be found in many archaeological sites and its study can give information about the technology of production, the trading routes, or the warfare within a region. However, bronze artefacts can undergo severe alteration processes, and the formation of corrosion layers of different copper minerals can prevent the readability of the artefact or even destroy it, as in the case of the ‘bronze disease’. Their preservation is crucial for maintaining a connection to our cultural heritage. In this paper, we present the study of some corroded bronze artefacts found in different burying conditions. They have been analysed through a scanner system that combines two non-invasive techniques, macro XRF (MA-XRF) and visible, near infrared, short wave infrared (VIS-NIR-SWIR) reflectance, to unravel information about the metal and the patina composition, thickness, and distribution. As the corrosion of bronze depends on the burying conditions and the alloy composition, these data are of the utmost importance to understanding the alteration processes occurring in the archaeological site and to ensure the artefacts’ optimal preservation.

The Sacred Lake Project: preliminary findings from the Lusatian site of Papowo Biskupie, Poland

AbstractIn 2023, prospection of a dried-out lake near Papowo Biskupie in north-central Poland identified substantial deposits of bronze artefacts. Excavation revealed further deposits and dozens of human skeletons that date from 1000–400 BC, suggesting that the site held particular significance as a place for sacrificial offerings in the Lusatian culture.

Technological researches of metal artefacts excavated from Majiayuan, Zhangjiachuan, Gansu Province, China

The Ma Jiayuan Tomb in Zhangjiachuan County, Gansu Province, stands as the sepulcher of a distinguished leader and nobles from a branch of the ancient Xirong, a collective term encompassing several ethnic groups in northwest ancient China. This archaeological site spans from the late Warring States period to the early Qin era. Among the myriad unearthed metal artefacts, a substantial portion comprises exquisite gold and silver objects, showcasing a diverse and intricate array of production techniques. These findings furnish compelling tangible evidence for the exploration of metalworking methodologies. This study rigorously scrutinizes 18 metal samples extracted from the M16 coffin of the Ma Jiayuan burial site dating to the late Warring States period (264-221BCE) in Zhangjiachuan County, Gansu Province, China. The analyses reveal that two copper artefacts were cast from copper-tin-lead alloys, whereas gold artefacts predominantly consisted of gold-silver alloys, and silver artefacts were chiefly crafted from pure silver and silver-gold alloys. Examination of the bronze artefacts suggests that artisans of this era tailored their technical choices based on the type and function of the artefacts they fashioned. The production techniques employed for gold and silver artefacts encompassed processes such as hammering, engraving, mold processing, stamping, polishing and inlaying. Notably, the distinct production methods and stylistic features of iron artefacts adorned with gold and silver, as well as animal-shaped gold artefacts unearthed from the coffin, probably reflect the influences of diverse cultures including the Southern Chu culture, Northern grassland culture, and Central Asian Altai culture on the vicinity of MaJiayuan. Through the fusion of these external cultural influences with their indigenous traditions, a distinctive civilization revolving around gold and silver objects was forged.

A framework of evolutionary optimized convolutional neural network for classification of shang and chow dynasties bronze decorative patterns.

As a UNESCO World Cultural Heritage, the aesthetic value of bronze artifacts from the Shang and Chow Dynasties has had a profound influence on Chinese traditional culture and art. To facilitate the digital preservation and protection of these Shang and Chow bronze artifacts (SCB), it becomes imperative to categorize their decorative patterns. Therefore, a SCB pattern classification method of differential evolution called Shang and Chow Bronze Convolutional Neural Network (SCB-CNN) is proposed. Firstly, the original bronze decorative patterns of Shang and Chow dynasties are collected, and the samples are expanded through image augmentation technology to form a training dataset. Secondly, based on the classical convolutional neural network structure, the recognition and classification of bronze patterns are implemented by adjusting the network parameters. Then, the initial parameters of the convolutional neural network are optimized by differential evolution algorithm, and the optimized SCB-CNN is simulated. Finally, comparative experiments were conducted between the optimized SCB-CNN, the unoptimized model, VGG-Net, and GoogleNet. The experimental results indicate that the optimized SCB-CNN significantly reduces training time while maintaining fast prediction speed, convergence speed, and high accuracy. This study provides new insights for the inheritance and innovation research of SCB patterns.

Huge amounts of iron raw material from the Early Iron Age settlement of Dédestapolcsány-Verebce (N-Hungary) – a preliminary archaeometallurgical study

The team of the Institute of Archaeological Sciences of the Eötvös Loránd University has been investigating the Early Iron Age hillfort at Dédestapolcsány-Verebce-bérc (Northeast Hungary) since 2020. The settlement was destroyed by siege in the late 7th century BC, as evidenced by hundreds of early Scythian bronze arrowheads and burnt buildings. Based on the recovered metal and pottery findings the settlement dated to the Early Iron Age in the Carpathian Basin (end of the 7th century – beginning of the 6th century BC). The quantity of the Early and Middle Iron Age iron and bronze artefacts and pieces of iron raw material on the site is exceptionally high. More than 30 depots were unearthed which include pieces of iron raw material. In the whole territory, the number of these finds is more than 600. The average weight of the pieces was 1.54 kg. A few selected objects were sampled and subjected to archaeometric analysis (OM and SEM-EDS). The main aim of the examinations carried out by the experts of the Archaeometallurgical Research Group of the University of Miskolc (ARGUM) was the material characterisation of the samples to figure out what kind of processing has been applied and reveal how the iron raw materials can be connected in any way to the other iron objects found at the site. Based on the results, it can be concluded that the iron pieces are compacted with a slightly heterogeneous structure. Each one is a part of a single bloom, not several pieces of different blooms assembled together. Numerous pores and cavities were observed in the microstructure of the samples. Their basic character is similar, although, they differ from each other, mainly in terms of carbon content and degree of forming. These pieces are not typical semi-finished products; they can be identified somewhere halfway between primary bloom and compacted bar.