A significant meteorite fall in the Eastern Cape 10 days ago sparked a collaborative scientific investigation involving several universities.
The event, witnessed by residents across a vast area, has led to the recovery of a rare meteorite fragment, provisionally named the ‘Nqweba Meteorite’ after the town in which it was discovered.
At 08:51 on August 25, residents in the Garden Route and Karoo and others in the Western Cape and Free State observed a bright blue-white and orange streak of light in the sky. The meteorite, after splitting into several smaller fragments, disappeared from view. Shortly after, witnesses reported hearing loud explosions and sensing vibrations.
Nine-year-old finds warm meteorite
Nine-year-old Eli-zé du Toit, while sitting on her grandparents’ porch in Nqweba (formerly Kirkwood), saw a dark rock fall from the sky and land near a Wild Fig tree in the garden. The rock – black and shiny on the outside with a light grey, concrete-like interior – was still warm when she picked it up.
Dr Deon van Niekerk of Rhodes University obtained a permit from the Eastern Cape Provincial Heritage Resources Authority to recover all fragments from the meteor for scientific analysis.
On learning of the meteorite’s discovery, Dr Carla Dodd of Nelson Mandela University quickly secured the sample collected by Eli-zé, recognising the rarity and importance of the find.
Prof Roger Gibson of the University of the Witwatersrand says: “Our response time was going to be critical if we were going to collect valuable scientific data and meteorite fragments, and explain to the public that this was a natural event and how the individual parts linked together.”
“Events such as these are incredible and are very exciting, both for the public who witness these falls and the scientists who gain invaluable information from studying the bolides and rocks,” says Dr Leonidas Vonopartis of Wits University.
The Nqweba Meteorite
According to a statement issued by Nelson Mandela University, the Nqweba Meteorite is believed to be an achondritic meteorite (a stony meteorite that does not contain chondrules), specifically a rare type within the Howardite-Eucrite-Diogenite group.
It weighs less than 90g and has a pre-fragmentation diameter of less than 5cm.
“The specimens have a dark black glassy coating (fusion crust) with a light grey interior, peppered with dark-green and light-green grains and clasts.
“Such meteorites provide valuable insights into the inner workings of other planetary bodies, offering scientists a glimpse into processes similar to those that formed Earth’s rocks,” the statement reads.
Collaborative effort
The investigation into the Nqweba Meteorite involves a co-ordinated effort between scientists from Nelson Mandela, Rhodes and Wits universities.
In the coming weeks, a joint team of researchers and astronomers affiliated with the Astronomical Society of Southern Africa will collect data from official observatories and eyewitness accounts to piece together the details of the event. They will do extensive searches for further meteorite fragments over a wide area of rugged terrain.
“We are grateful that Eli-zé’s family immediately thought to contact us at Mandela University’s Geosciences Department upon making this rare find, effectively setting off this collaborative effort to study the meteorite and preserve it as part of the Eastern Cape heritage,” says Dodd.
What’s next?
The initial scientific focus will involve microscopic and geochemical analysis of the recovered meteorite fragment to fully classify it and understand its origin.
The investigation could provide insights into the meteorite’s source region in space and possibly identify its parent body.
Eastern Cape Meteorite Discovery Unveiled | The spectacular entry of a meteorite into Earth’s atmosphere has unleashed a chain of events that would not be out of place in a Hollywood movie script. At 8:52 am, residents from as far as the Garden Route, the Karoo, the Western Cape,… pic.twitter.com/E08S3rlCwj
— Wits University (@WitsUniversity) September 3, 2024
Send your eyewitness reports and security camera footage to: meteorites.science@wits.ac.za#RSAMeteorite @Rhodes_Uni@WitsUniversity@AlgoaFMNews @HeraldNMB pic.twitter.com/kTsF04SaPf
— Mandela University (@MandelaUni) September 3, 2024
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