An Australian man’s years-long quest to unearth what he thought was a gold deposit yielded an even rarer finding: a 17-kilogram meteorite approximately 4.6 billion years old.The unusual rock, found in 2015 near Maryborough, Victoria, resisted all attempts at fracturing until a diamond saw revealed its extraterrestrial origins. Scientists have now formally named the meteorite “Maryborough,” adding to the roughly 17 other documented meteorite finds in the state.
A man in Maryborough, Australia, initially believed he’d struck gold when he unearthed a curiously heavy, reddish rock. After years of unsuccessful attempts to cut, drill, or break it open, he discovered he was holding something far more valuable than any gold nugget: a genuine meteorite approximately 4.6 billion years old.
David Hole was metal detecting in the Maryborough Regional Park near Melbourne in 2015, an area steeped in the history of Australia’s gold rush, when he came across the unusually dense rock embedded in yellow clay. Convinced it contained gold, he took it home.
Hole progressively tried an angle grinder, a drill, and even acid in an effort to split the rock, but to no avail. Even a hammer couldn’t make a dent. It wasn’t gold the rock concealed, but a meteorite – an object no ordinary tool could fracture.
After years of failed attempts, Hole brought his find to the Melbourne Museum. “I’ve seen thousands of rocks that people think are meteorites,” said geologist Dermot Henry. “In 37 years working at the museum, though, there have only been two that were genuine – and this was one of them.” Henry described the rock as having a typical “sculpted, pitted surface” formed as it traveled through the atmosphere, with the outer layer melting away.
Scientists subsequently named the meteorite Maryborough, after the region where Hole discovered it. Bill Birch, a geologist at the museum, added that anyone finding a rock like this would likely notice its disproportionate weight for its size. “Its mass is unreasonably high for an ordinary rock,” he explained. The Maryborough meteorite weighs a substantial 17 kilograms.
Where conventional tools failed, a diamond saw finally succeeded. Geologists were able to extract a thin slice of the rock for detailed examination. The analysis revealed it to be an H5 ordinary chondrite, rich in iron and containing clearly visible chondrules – small, crystallized droplets of minerals. This discovery underscores the importance of material science in understanding the composition of celestial bodies.
“Meteorites are the cheapest form of space exploration,” Henry explained. “They take us back in time and provide clues about the age of our solar system, how it formed, and its chemical composition. Some meteorites contain stardust older than the solar system itself. Others contain organic molecules, like amino acids – the building blocks of life.”
The meteorite’s origin is not precisely known, but scientists believe it came from the asteroid belt between Mars and Jupiter. It was likely ejected after a collision between two asteroids and eventually landed on Earth. Radiocarbon dating suggests it had been lying in the soil for between 100 and 1,000 years. Several recorded observations of bright meteors between 1889 and 1951 correspond with this timeframe.
According to scientists, Maryborough is ultimately more valuable than gold – and far more scientifically significant. Only 17 meteorites have been found in the state of Victoria, Australia, and only one was larger than Maryborough: a 55-kilogram specimen discovered in 2003. “When you consider the sequence of events that led to its discovery, it’s almost astronomical,” Henry noted.
This isn’t the first meteorite to reach a museum after years of an unassuming existence – some have even been used as doorstops before their true value was recognized. In recent years, scientists have refined the origins of more than 90 percent of known meteorites, so perhaps you have one in your garden just waiting to be discovered.
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Source: A study on the Maryborough meteorite published in the Proceedings of the Royal Society of Victoria.
