The rock, which was initially used as a doorstop in the Edmore area for several decades after a farmer recovered it sometime in the 1930s, turned out to be Michigan's sixth-largest meteorite, a university spokesperson said.
"For 18 years, the answer has been categorically "no" - meteor wrongs, not meteorites", Sibescu said in a statement from CMU on Thursday.
"Within seconds, I knew it was a real one", Sirbescu said when she saw the meteorite.
The meteorite weighs over 22 pounds (10 kilograms), which makes it the sixth largest found in MI.
"It's the most valuable specimen I have ever held in my life, monetarily and scientifically", Sibescu said.
Sirbescu said this is the sixth-largest meteorite on record to be found in MI. He says the farmer who sold him the property told him it landed in his backyard in the 1930s.
Upon receiving the meteorite, Sirbescu evaluated it and discovered it was an iron-nickel meteorite, composed of 8 to 8.5 percent iron and 11.5 percent nickel.
The winners and losers of new Nafta
The deal has to be signed by the leaders of the three countries, go through Congress as well as Legislatures in Canada and Mexico. The agreement also contains a sunset clause to expire or renew after 16 years.
Now, the Smithsonian Institution is considering making an offer on the space rock.
Like the farmer, he just thought it was "cool to look at", and let his children take it to school for show and tell.
"I said, 'Wait a minute".
So they dug up the meteorite.
The owner thought little of it and kept it as a door stop, until recently when he chose to find out how much his unusual rock was worth.
It has been named the Edmore meteorite, after the place in which it fell.
The meteorite hasn't sold yet, but the Smithsonian Museum is considering buying it, as well as another collector. If a sale goes through, the man has agreed to give 10% of the sale value to the university for the study of earth and atmospheric sciences. A colleague there further analyzed the sample, including with an acid test to reveal the Widmanstätten pattern, a property of most iron-nickel meteorites that can not be faked.
A friend directed him to the CMU geology department, and Sirbescu confirmed the find by looking at it under an X-ray fluorescence instrument.