The implication of the metallurgical traditions associated with Chinese style wagons from the royal Xiongnu tomb at Golmod 2 in Mongolia

Lavishly decorated wagons excavated from royal Xiongnu burials are generally regarded as tribute items from China offered to Xiongnu elites, symbolizing important political and economic interactions between the Xiongnu state (209 BC–155 AD) and the Han dynasty (206 BC–220 AD). This theory views such vehicles as having no relation to indigenous Xiongnu craftsmanship. Furthermore, specialized products delivered to the northern nomadic peoples from the Han state are often cited in support of the notion of Xiongnu dependency on foreign states for technological and political development. Expecting to find evidence of China’s traditional iron and bronze technology, we examined a number of key metallic components of these wagons excavated from the royal Xiongnu burial at Golmod 2 in central Mongolia, radiocarbon dated to 109 BC–AD 75. Surprisingly, the iron metallurgy in question was based primarily on the bloomery process while low tin bronze and arsenical copper alloys dominated the pertinent bronze production. These respective technological traditions are typical of Xiongnu manufacture but significantly different from traditional Han metallurgy. We interpret this evidence as suggesting the need for a more balanced evaluation of foreign influence on the rise and development of the Xiongnu state.     

Technological traditions inferred from iron artefacts of the Xiongnu Empire in Mongolia

Iron objects excavated from sites of the Xiongnu Empire (3rd century BC–2nd century AD) in Mongolia have been examined using optical and scanning electron microscopy. The results show that the Xiongnu iron tradition may be characterized by the use of low carbon iron and carbon control by carburization. Cast iron was also used in the Xiongnu Empire, but only in very limited applications and with no convincing evidence of its use for the production of low carbon iron. The Xiongnu iron technology seems to have been established on the basis of the bloomery technique, without much influence from the Chinese style of technology, based on cast iron.     

The key role of zinc,tin and lead in copper-base objects from medieval Talgar in Kazakhstan

Metallurgical examination of brass and bronze objects from the medieval (AD 9th–13th century) site at Talgar in Kazakhstan shows that they were mostly cast from the quaternary copper–zinc–tin–lead system with some exceptions that were forged from binary copper–zinc alloys. Evidence is found that brass was produced in the cementation process and that the addition of tin and lead to the parent brass was considered beneficial in casting but was strictly avoided in forging. The mutual effect of zinc, tin and lead for better casting and the advantages of the binary copper–zinc alloys in forging seem to have been the major factors driving the establishment of this unique brass tradition in a society with probably limited access to tin.     

Did China Import Metals from Africa in the Bronze Age?

The origins of the copper, tin and lead for China's rich Bronze Age cultures are a major topic in archaeological research, with significant contributions being made by archaeological fieldwork, archaeometallurgical investigations and geochemical considerations. Here, we investigate a recent claim that the greater part of the Shang‐period metalwork was made using metals from Africa, imported together with the necessary know‐how to produce tin bronze. A brief review of the current status of lead isotopic study on Shang‐period bronze artefacts is provided first, clarifying a few key issues involved in this discussion. It is then shown that there is no archaeological or isotopic basis for bulk metal transfer between Africa and China during the Shang period, and that the copper and lead in Shang bronze with a strongly radiogenic signature is not likely to be from Africa. We call for collaborative interdisciplinary research to address the vexing question of the Shang period's metal sources, focusing on smelting sites in geologically defined potential source regions and casting workshops identified at a number of Shang settlements.     

Iron Age tin bronze metallurgy at Marlik,Northern Iran: an analytical investigation

The archaeological excavations performed in 1961 and 1962 at the necropolis of Marlik (Gilan District, northern Iran) revealed important archaeological remains dating to Iron Age I and II periods (late second/early first millennium BCE). While the metal collection from Marlik includes various gold, silver and bronze objects and is considered one of the most significant finds of metal objects from the prehistoric Iran, the technological investigations discussed in this paper provide information on tin bronze objects only from Marlik. Both the composition and the microstructure of 25 copper alloy objects have been determined in order to achieve a better understanding of the metallurgical processes used in northern Iran from the second to the first millennium BCE. Experimental analyses were carried out using inductively coupled plasma mass spectrometry (ICP-MS), scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS) and optical microscopy. The results demonstrated that the copper-base objects were made of the binary copper–tin alloy with variable tin contents. Other elements such as As, Ni, Pb, Zn and Sb were detected in minor/trace amounts. Variable tin content may be due to the application of an uncontrolled procedure to produce bronze alloy (e.g. co-smelting or cementation). Microscopic observations and microanalyses revealed the presence of numerous copper sulphide inclusions, lead globules and intermetallic phases scattered in the bronze solid solution. The microstructures seen in the bronze objects under study were varied and included worked/annealed or dendritic grain structures.     

Bronze technology of the ancient megalithic communities in the Vidarbha region of India

Metallographic examination was carried out on forty-nine copper and bronze objects from five megalithic sites located in Vidarbha, India. The artifact assembly consists of horse ornaments, kitchenware, bangles, rings, small bells and the hilt of an iron dagger. Results show that the technology involved is characterized by the use of bronze alloys containing approximately 10% tin based on weight and the application of forging as a key method of fabrication. No deliberate addition of lead was observed. Arsenic was detected, but very rarely and only as an insignificant minor element. The consistent selection of such specific alloys indicates that the megalithic communities in this particular region had established a fully developed and standardized bronze tradition optimized for the production of forged items. Their advanced technological status was also noted in a special technique applied to two forged high-tin bronze bowls. Such a unique bronze tradition, dedicated to sheet metal technology, was most likely a practical choice made by these people to take advantage of the changing role of bronze. Specifically, with the introduction of iron, bronze seems to have become a more prestigious material that could serve as an indicator of the appearance of a more rigid socio-economic stratification within the megalithic communities of the Vidarbha region.     

Long‐distance interaction in Urartu?: Provenance and composition of copper alloys from Ayanis,Turkey

The paper analyses tin bronze weaponry found at the first‐half‐of‐the‐seventh‐century‐BCE Urartian fortress in the Lake Van region of eastern Turkey. Examples of finely manufactured artefacts provide evidence for the consumption of high‐quality bronzes in a well‐defined elite context. This study tests for the presence or absence of long‐distance procurement of the raw materials used to produce status objects. The results of quantitative elemental and lead isotope abundance ratio analyses show that the bronzes were produced with varying copper tin alloys, and the copper was procured from several possible locations, including Anatolia and Cyprus.     

AN ASSEMBLAGE OF BRONZE ARTEFACTS FROM IVINGHOE, BUCKINGHAMSHIRE

Summary. An assemblage of 20 bronze artefacts discovered together is described, which includes 17 Late Bronze Age objects belonging to the Wilburton tradition (including one decorated sword hilt). The assemblage also includes three other objects, of later dates, and the separate discovery of a Wilburton sword, found nearby, is also described. The origin of the Wilburton items as part of a hoard is discussed and the likely history of the assemblage is considered. A metallurgical report on all the objects, by J.P. Northover is included.     

Traditions and transitions in Korean bronze technology

Metallurgical examination of Korean bronze artifacts shows that a technical tradition based on casting and use of leaded high-tin alloys was established in Korea at the early stages of bronze use. After the subsequent discovery of quenching methods that suppress formation of the brittle δ phase, new thermo-mechanical techniques were introduced between the 7th and 10th centuries AD. Lead-free alloys were used, and tin contents near that of the peritectic point in the Cu–Sn phase diagram were chosen. Leaded high tin alloys continued in use, but only in cast objects, and with significant composition variation. The unique conditions during the time of innovation suggest that the transition to new metallurgical techniques was gradually achieved through domestic technical innovation inspired by external influences.     

Production and Consumption of Copper-base Metals in the Indus Civilization

We review the existing data sets for the production and consumption of copper-base objects at Indus sites, outline a working typology for metal objects, and provide new data from on-going analytical work on the copper assemblage from Harappa. The role of metals in the economic and social networks of the Indus tradition is examined in terms of patterns of use and technological style. We note that Indus metalsmiths apparently relied more on procurement of metal ingots or scrap than on primary ingot production through smelting, which would have affected other aspects of Indus metallurgy. Object production did not involve elaborate forms, but may have involved complex alloying. Finally, we conclude that there is no evidence for elite control of metal production, and that access to metals was relatively widespread.     

EARLY BRONZE AGE TROJAN METAL SOURCES AND ANATOLIANS IN THE CYCLADES

Summary. New chemical analyses of EB II copper-alloy artefacts from Troy show that about seventy per cent are of high tin, low arsenic, bronze; the remaining Trojan objects are of arsenical copper but contain no more than 3 per cent of arsenic. Lead-isotope analyses suggest that at this time the Trojans made use of at least five different copper-ore deposits and that at least two of these were not in the immediate vicinity of Troy itself.
At this period tin bronze was unknown in the Early Helladic, Cycladic or Minoan cultures. Low-arsenic tin bronzes do however constitute sixty-nine per cent of the copper-alloy artefacts excavated at the fortified hilltop EC IIIA settlement at Kastri on Syros, but lead-isotope analyses show that the copper in these objects is derived from three different ore deposits which are different from those exploited by the early Cycladic peoples on Amorgos, Paros, Kythnos and Chalandriani on Syros. For Kastri the alloy types are closely similar to and the copper ore sources used are identical with those employed in Troy II; in addition there are good Anatolian parallels for some of the metal types occurring at Kastri. Taken together with evidence from the pottery, the architecture and the nature of the site it seems inescapable that Kastri was a short-lived settlement of Anatolians who lived, perhaps, in somewhat uneasy juxtaposition with their Cycladic neighbours. These Anatolians came most probably from Troy or the Troad since tin bronze was virtually unknown at this period elsewhere in Anatolia, and certainly not in Cilicia, except at the central Anatolian sites of Ahlatlibel, Alishar and Alaca Hüyük.     

Tin‐Rich Surface Decoration of Chinese Bronzes: A Case Study of the British Museum Collection

In this paper six bronze artefacts of the Eastern Zhou period to Han dynasty (770 BC ‐ 220 AD) with tin‐rich surface decoration in the British Museum collection were studied using a variety of analytical techniques. The decoration patterns include trellis patterns (菱形纹) on two swords of the Yue state, tiger's striped patterns (hu‐ban‐wen, 虎斑纹) on two swords from the Ba‐Shu region, a hexagonal star pattern (六角星纹) on a spearhead of the Wu state, and a cloud‐like pattern on a garment hook. The tin‐rich decorations on those objects were produced by deliberate tinning processes; at least three different tinning techniques were used, including the use of tin‐rich pastes for the trellis pattern of a Yue state sword and for the mottling decoration on the Ba‐Shu swords, amalgam tinning for the hexagonal star pattern on the spearhead of the Yue state, and hot tinning for the cloud‐like pattern of the garment hook. Different tinning techniques could have been applied to produce similar tin‐rich decoration patterns, and vice versa, a single tinning technique could have been used to produce different tin‐rich patterns on different objects.     

ON THE COMPOSITION AND PROVENANCE OF METAL ARTEFACTS FROM POLIOCHNI ON LEMNOS

Summary. The majority of the well-stratified Early Bronze Age metal objects from Poliochni, with the exclusion of one hoard find, was analyzed for their chemical and lead isotope composition. The results show that a major change occurred in the metal used at Poliochni during periods contemporary with Troy I and Troy II. Unalloyed or arsenical copper with relatively high lead contents during the earliest two periods 'azzurro' and 'verde' is gradually replaced and supplemented by tin bronze which, during period 'giallo', i.e., by the end of Troy II, becomes the dominant metal type. Lead isotope abundance ratios in the earlier artefacts are consistent with a derivation of the metal from regional ore sources but the trace element abundance pattern is not. Concurrent with the appearance of tin bronzes is an increase in the diversity of ore deposits exploited; for about one third of the artefacts from period 'giallo' there is as yet no matching ore source in all Anatolia and the Eastern Mediterranean. It is argued that the tin bronzes have been imported as such but that the lead isotope signature does not provide any direct clues to the origin of the tin.     

Transitions in cast iron technology of the nomads in Mongolia

Metallurgical study of seven cast iron artifacts recovered from sites of the former Xiongnu (BC 3rd to AD 1st), Turk (AD 6th to 8th), Khitan (AD 10th to 12th), and Mongolian empires (AD 12th to 15th) shows that the earlier Xiongnu and Turk artifacts were made of cast iron alloys of near eutectic composition. The later Khitan and Mongol objects had greatly reduced carbon content in the range of ultrahigh carbon steel rather than cast iron, and contained more than 0.5 mass % silicon as an alloying element. Inclusions high in sulfur, phosphorus or silicon are also present. These differences suggest that Mongolia experienced a technical transition a few centuries before the establishment of the Mongolian empire, which is in agreement with some written accounts. The microstructures of the cast iron artifacts are compared with the related archaeological and documentary evidence. The results suggest that the use of fossil coal in smelting and the state policy of controlling iron production were the major factors responsible for the transition.     

EARLY BRONZE AGE TIN PROCESSING AT KESTEL/GÖLTEPE,ANATOLIA

Chemical analysis of statistically significant numbers of samples including minerals, sediments, soil, host rock as well as powdered materials, crucible accretions and metal artefacts revealed information about the distribution of cassiterite at Kestel and the tin smelting processes that took place at Göltepe c. 2600 BC. Using the ancient technique of vanning for the isolation of tin ore (cassiterite), followed by assaying by blowpipe/charcoal block, as well as crucible smelting with a blowpipe, good tin metal suitable for alloying with copper to make bronze was obtained. There is every indication that tin was mined and smelted in the Early Bronze Age at the Kestel/Göltepe sites.     

Synchrotron radiation-based x-ray analysis of bronze artifacts from an Iron Age site in the Judean Hills

Seven bronze bangles from Tell en-Nasbeh, northern Judah, were investigated to understand the phase composition and manufacturing process of the artifacts, and possibly suggest a provenance for their origin. Synchrotron x-ray radiation diffraction (XRD) and fluorescence (XRF) were used in the analysis to avoid any destructive sampling and at the same time penetrate through the surface into the core metal. These techniques enabled us to determine that the bangles were not just tin bronze, but leaded tin bronze. Based on excavation reports, it is unlikely that the metal objects were manufactured locally at Tell en-Nasbeh; rather, preliminary XRD and XRF data point towards the neighboring region of Edom as their origin. Despite their political enmity during the Iron Age II, the data suggest that Judahite social demands for bronze may have fostered a strong economic relationship between these two polities.     

A 15th‐Century Wreck of an Ordnance‐Carrying Ship from Atlit North Bay,Israel

In 1977, a shipwreck assemblage was discovered off Atlit, Israel. Finds included three iron anchors, a large bombard, four swivel guns, stone and lead shot, and bronze helmets. The bronze bombard (2210 kg, 3.247 m long) contained a wooden wad and remnants of what may have been gunpowder. The swivel guns (each 185 kg) were bronze, with swivels and the tillers of iron. Twenty (or 21) bronze helmets were recovered. The findings provide rare evidence for the mounting of heavy ordnance on the bow of a galley or ship in the 15th century.     

安徽南陵出土部分青铜器研究

安徽省南陵县是长江下游地区最早而且规模最大的冶炼中心之一,其古代矿冶遗址可上溯至西周晚期。本研究对南陵出土的不同年代和类别的青铜器样品进行了金相检测及合金成分定量分析。结果表明,只有容器存在铜铅二元合金和铜锡铅三元合金,但是热锻淬火的容器却不含铅,含锡量恰好位于适合该工艺操作并具有良好性能的区间。兵器、工具、车马饰均为铜锡二元合金,说明当时的工匠对于合金成分配比与性能的关系有明确的认识。越式鼎腹部样品具有热锻淬火马氏体组织,同样的金属结构还见于汉代铜锣等乐器、峡江地区战国中晚期青铜剑、江都大桥镇南朝青铜器窖藏出土的多件青铜容器,而镇江地区出土吴国青铜戈则具有铸造淬火组织,工艺稍有差别。这些器物中发现高锡青铜淬火组织不是偶然的,高锡青铜热锻淬火技术至少可以上溯至春秋战国时期,用以改善高锡青铜的机械性能。     

匈奴腰饰牌及相关问题研究

匈奴腰饰牌特色鲜明,是匈奴文化的重要组成部分。对于没有文字的匈奴民族来说。这些腰饰牌是人们了解和认识匈奴社会以及匈奴民族与周边其他民族关系的一扇窗口。本文以匈奴遗迹出土腰饰牌为主要考察对象。辅以匈奴传世腰饰牌,通过考古类型学分析将其划分为A、B两大组群八个类型,初步勾勒出了匈奴腰饰牌的总体面貌和特征,指出了其中的地域差异。进而对匈奴腰饰牌进行了文化渊源之探讨。通过对匈奴遗迹和西汉墓葬出土腰饰牌的对比分析,总结出它们各自在空间分布和传播上的特点,认为A群组腰饰牌属于匈奴文化系统。它们源自早期草原文化带扣和骚饰牌。B群组腰饰牌存在着不同的文化系统Ba型腰饰牌属于匈奴文化系统,Bb型和Bd型腰饰牌属于汉文化系统,Bc型腰饰牌是这两大文化系统腰饰牌的混合体,且匈奴Ba型腰饰牌源自Bb型和Bd型腰饰牌。本文同时指出,中国北方地区是匈奴草原文化系统腰饰牌与汉文化系统腰饰牌的交汇地。     

ARCHAEOMETALLURGICAL CHARACTERIZATION OF HELLENISTIC METAL OBJECTS: THE CONTRIBUTION OF THE BRONZE OBJECTS FROM RISHON LE‐ZION (ISRAEL)*

An archaeometallurgical analysis is presented of 14 bronze artefacts retrieved from an Early Hellenistic–period farmstead in controlled archaeological excavations at Rishon Le‐Zion, Israel, and dated to the first quarter of the third century bce according to coins and pottery vessels. The bronze assemblage includes a needle, pins, spatulas and fibulas. The aims of the research are to determine the composition, microstructure and manufacturing process of these artefacts, and to discover their place of production. This will provide a better understanding of Hellenistic technological abilities and material culture. The examination included optical microscopy, microhardness, SEM including EDS, and XRD. The results show that the collection consists of Cu–Sn binary alloys, with evidence for a controlled alloying process and the absence of recycling. Furthermore, the microstructure of the objects indicates that all artefacts were produced by a cold‐working process. Moreover, the manufacturing process of the rectangular cross‐section fibulas included sophisticated joining techniques of copper and iron.