The newly identified meteorite had been masquerading as a doorstop.
Credit: Mackenzie Brockman/Central Michigan University

A rock that had been used as a barn doorstop on a Michigan farm for more than 30 years is actually a massive meteorite worth over $100,000.

The 10 kilograms (22-lb. ) meteorite is believed to have touched down in the 1930s on a farm in Edmore, Michigan. Earlier this year, the man who purchased the farm in 1988 and obtained the meteorite as part of the property brought the space rock to Central Michigan University (CMU) for examination.

According to the Chicago Tribune, David Mazurek took his doorstop to Central Michigan University for examination after seeing reports in January of meteorite pieces selling for thousands of dollars.

“I said, ‘Wait a minute. I wonder how much mine is worth,'”

– Mazurek reportedly said.

Most meteorites typically consist of approximately 90 to 95 percent iron and so is the case in Mazurek’s meteorite. The doorstop meteorite is about 88 percent iron and 12 percent nickel, a metal rarely found on Earth

The chunk of iron—which was confirmed as a space rock by the Smithsonian Institution in Washington, D.C.—is the sixth-largest meteorite ever found in Michigan, according to the museum.

The farmer has not yet decided whether the meteorite will be sold to a collector or a museum to be put on display. Both the Smithsonian and a Maine museum are considering purchasing the rock, according to a Central Michigan University statement.