Arrowhead Made from a Meteorite

In the late 1800s, archaeologists discovered an arrowhead at a Bronze Age dwelling in Mörigen, Switzerland. In the years since, the 3,000-year-old artifact has been part of the collection at the Bern Historical Museum.

Now, a new analysis reveals that the object is no ordinary arrowhead — it was crafted from a meteorite that crashed to Earth 3,500 years ago, according to a study published in the September issue of the Journal of Archaeological Science.

"On the outside it looks like a typical arrowhead coated in rust," lead author Beda Hofmann, head and curator of mineralogy and meteorites at the Natural History Museum of Bern, told Live Science. Their analysis showed that "there is still a lot of metal preserved," he said.

Several methods, including X-ray tomography (computerized imaging) and gamma spectrometry (a process that detects gamma-emitting radioactive materials), showed that the palm-size arrowhead not only contained aluminum-26 isotopes that don't naturally occur on Earth but also traces of iron and nickel alloy consistent with meteorites, according to the study.

The analysis also revealed grind marks left over from when the meteorite was shaped into an arrowhead, and the remains of tar, which was likely used to attach the point to the arrow's shaft, according to a statement.

At first, scientists thought the artifact was linked to the 170,000-year-old Twannberg meteorite site, less than 5 miles (8 kilometers) from the dwelling. However, further study revealed that the concentrations of nickel and germanium (a chemical element) in the arrowhead weren't a match, according to the statement.

"It wasn't from the meteorite that I suspected it was from," Hofmann said of the artifact, which weighs one-tenth of an ounce (2.9 grams) and measures just over 1 inch (3 centimeters) long.  READ MORE...

Arrow Found in Melting Ice

Image Credit : Glacier Archaeology Program

ARCHAEOLOGISTS FROM THE GLACIER ARCHAEOLOGY PROGRAM HAVE FOUND AN ARROW IN THE MELTING ICE DURING A RESEARCH PROJECT IN THE NORWEGIAN MOUNTAINS.

The project is focusing on a melted ice patch in the Jotunheimen mountain range, where the team has found a preserved arrow with an intact iron arrowhead, shortly after arriving at their base camp 1750 metres above sea level.

The arrow dates from around 1,500 years ago during the Norwegian Iron Age, discovered in a collection of broken rock fragments between larger stones on the lower edge of the icefield.

The team believes that the arrow was lost and deposited downslope by meltwater, and has since been exposed several times over the centuries with the melting ice.

This is indicated by the lack of fletching, the fin-shaped aerodynamic stabilisation normally made from feathers or bark. Evidence of sinew and tar has also been identified, but this survives in a poor state of preservation.

The arrow is tapered towards the end and the nock has been thickened for engaging with a bowstring. The remains of the tar would have glued the fletching to the shaft, while imprints of the thread securing the fletching is still visible.  READ MORE...