Non-Destructive Analysis of Coinage

Interesting …

Demonstrating that chemistry sometimes can inform history, researchers from the National Institute of Standards and Technology (NIST), Colorado College and Mount Saint Mary’s University in Emmitsburg, Md., have shown that sensitive nondestructive evaluation (NDE) techniques can be used to determine the elemental composition of ancient coins, even coins that generally have been considered too corroded for such methods*. Along the way, the researchers’ analysis of coins minted in ancient Judea has raised new questions about who ruled the area while giving insight into trading patterns and industry in the region.

Elemental and isotope analysis of the metals in ancient artifacts sometimes can pinpoint the places where the metal was mined, because ores in a given region often have a unique composition. This can be combined with historical records of when mines in the area were operating to determine when the coin was likely struck. The results not only help date the coin, but also offer insight into trade and power relationships in the region.

To compare the effectiveness of various nondestructive analytical methods with destructive methods often used to determine the age and origin of ancient coins, the group studied coins minted by Kings Herod Agrippa I and Agrippa II in what is modern day Palestine and Israel, a biblically and historically significant period.

The vast numbers of a particular coin, a prutah, found in the archaeological record has led scholars to disagree about when they were struck and by whom. The provenance of the coin is important because it is used to establish dates for places and events in the early years of Christianity and the onset of the Jewish War (66-70 CE) against the Romans and the Diaspora that followed.

To better establish whether the coins were minted by Agrippa I (41-45 CE) or Agrippa II (after 61 CE), the team performed X-ray fluorescence and lead isotope analysis to fingerprint the ores used in the production of the coins. These NDE methods are not commonly used on corroded coins because the corrosion can affect the results—in some cases making it difficult to get a result at all. The team showed that these problems could be overcome using polarizing optics and powerful new software for X-ray fluorescence analysis, combined with careful calibration of the mass spectrometer using Standard Reference Materials from NIST**.

The lead isotope analysis, performed at NIST, showed that the coins that had been attributed to Agrippa I were indeed from that era. More interestingly, however, the group found that the copper from which the coins were made most likely came from mines that scholars thought hadn’t been opened until a century later.

“All the archaeological evidence has thus far suggested that the Romans had moved into Arabia in the 2nd century CE,” says Nathan Bower of Colorado College. “What this analysis shows is that the Romans may have reached the region earlier or found that these mines had already been opened. Either way, our findings suggest that the Romans had a much closer relationship with this particular region than scholars had previously thought.”

To follow up on their research, the group is planning to perform more tests to determine if the mines in question may have been operating even earlier than their recent findings suggest.

via NDE methods for evaluating ancient coins could be worth their weight in gold | Eurekalert.

Vomitorium … Someone Gets it Right!

Kudos accrues to Ian Shuttleworth in the Financial Times!

The Old Market is not as accommodating a theatre space as it appears: playing on three sides like this puts the performers some distance away from the main bank of audience. However, director Jo McInnes counteracts this by smart use of vomitorium aisles for entrances, exits and backing vocals during musical numbers, adding a surround-sound feel to Thor McIntyre-Burnie’s wonderfully discreet ambient sound design.

via Brighton Festival: Marine Parade, Old Market; Best Before, Sallis Benney Theatre | FT.

Heavy Rain Uncovers an Iberian Necropolis

Some problems in translation, alas:

These works have recovered more than twenty burials, mostly groups, which are dated the first century BC and show clear Iberian cremation rites.

Iberian necropolis dated 100 BC in Arjona (Jaén) Heavy rain in Arjona uncovers the further remains

The accidental finding in Arjona (Jaén) was discovered in the remains of an Iberian necropolis of the first century BC, some of the archaeological work is to be presented in June at an international meeting.

The box, cube-shaped and made of sandstone, has, on its four sides, relief’s of different scenes of mourning, with fights between two warriors, both on horseback or on foot. The stone box has a cover and inside were the ashes of two people, according to a coroner at the Complutense University of Madrid who have analyzed the remains belonging to a man and a woman, burned less than 800 degrees, as evidenced some pieces of bones from the hand and foot. The discovery was made incidentally during the rains last year near Arjona.

As the winter rains threatened to damage the site, Arturo Ruiz and Manuel Molinos, director and deputy director of the Andalusian Center of Iberian Archaeology (IAAC), respectively, promoted an emergency archaeological intervention, conducted between February and May.

via Iberian necropolis dated 100 BC in Arjona (Jaén) Heavy rain in Arjona uncovers the further remains | Barcelona Reporter .

Latest Italian Bust

Italian police in the Sicilian capital Palermo have seized ancient artefacts after several raids which uncovered an alleged operation that used the Internet for selling the finds. Since the beginning of the year Operation Archeweb has found 69 suspicious pieces in the hands of alleged traffickers.

Police specialising in protecting cultural patrimony have seized small Greek, Roman statues, coins, vases and other pieces since the beginning of the year, the police said on Thursday.

The archeological pieces have been handed over to authorities in the Italian culture ministry.

Seven suspects may be charged with receiving stolen goods from illegal archeological digs.

Italy’s rich archeological heritage spans the entire peninsula, including Etruscan tombs and Roman villas. Ancient artefacts found in Italy are considered state property.

via Italy: Police seize archeological artefacts in raids | Adnkronos.