Ubatuba Magnesium Fragments (1957)

14 September 1957. Rio de Janeiro. Ibrahim Sued's society column in O Globo printed a letter from a reader. The signature was illegible. With it came three small pieces of dull white metal.

The writer placed the event "close to the town of Ubatuba, Sao Paulo." Brazilian retellings name Praia das Toninhas. Even the date is uncertain. Local sources give 7 September. Others give the 13th, or the 14th, the day the letter appeared in print.

"I was fishing together with some friends, at a place close to the town of Ubatuba, Sao Paulo, when I sighted a flying disc. It approached the beach at unbelievable speed and an accident seemed imminent. At the last moment it made a sharp turn upward and climbed rapidly. We saw the disc explode in flames. It disintegrated into thousands of fiery fragments, which fell sparkling."

Fuller versions say it turned "when it seemed it was almost striking the waters" and climbed "on a fantastic impulse." The writer had gathered some of the material. It "was as light as paper. I am enclosing a sample of it."

Dr. Olavo T. Fontes, a Rio physician and APRO's Brazilian representative, took up the case. He searched for the writer and for other witnesses. He found nobody.

The metal went to Brazil's Mineral Production Laboratory. There chemist Luisa Maria A. Barbosa found magnesium of a high degree of purity, with no other metallic elements detected. A second run by Elson Teixeira agreed, and Fontes took this to mean 100% pure. The samples passed to Coral and Jim Lorenzen at APRO. The US Air Force reportedly destroyed one without producing results.

5 February 1968. For the Condon Committee, Dr. Roy Craig worked with Dow Chemical to compare a Brazilian fragment with Dow's triply sublimed magnesium. The Brazilian sample was less pure. It held 500 parts per million of strontium, spread evenly through the metal and most likely added on purpose during manufacture. Dow had made similar alloys as early as March 25, 1940. The conclusion: the fragment "cannot be used as valid evidence of the extra-terrestrial origin."

In 2001, Peter Sturrock at Stanford found that four specimens differed from one another. Some impurities could have come from seawater or sand. Others "may point toward an origin in a technological device or devices." In 2022, Robert Powell and colleagues at the Scientific Coalition for UAP Studies reported that the magnesium isotope ratios fell within terrestrial limits. The results for the trace elements were inconclusive.

Kevin Randle stated the central weakness plainly. "No eyewitnesses to the explosion have ever come forward." The samples, he wrote, "cannot be traced to the beach in Brazil where they were recovered. Instead, they can be traced to the columnist." Other investigators dismissed the case as a hoax. Conventional explanations include ordinary Dow magnesium, rocket or flare debris, and a 1950s spectrograph result read as more than it was. Keith Basterfield floated a speculative working theory that US intelligence planted the metal, drawing on claims of a CIA "Project Mirage" that staged UFO incidents in Latin America. Powell countered that faking the samples would have meant heating magnesium to extreme temperatures, breaking it up, and accounting for the seawater residues.

Powell's question still hangs over the beach. "How did a piece of magnesium of this purity come to be in Brazil in 1957?" Garry Nolan and Jacques Vallée have since taken up Ubatuba material. The case stands beside Maury Island and Council Bluffs among the alleged UFO debris that has been through laboratory analysis. The person who mailed the metal has never been found.