Within Ubatuba
What Did the Ubatuba Metal Tests Show?
The surviving metal pieces are real magnesium-rich samples, but their chemistry has never proved an extraterrestrial origin.
On this page
- From pure magnesium claim to trace impurities
- Strontium, barium, and earthly production clues
- Modern isotope results and open questions
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Introduction
The most important physical evidence in the 1957 Ubatuba incident is not the sighting story but the metal itself. Small silvery fragments, allegedly recovered after an aerial explosion near the Brazilian coast, were tested repeatedly from the late 1950s onward. Over time, the fragments became known as the “Ubatuba magnesium” samples because laboratory work consistently showed that they were composed mostly of magnesium of unusually high purity. What the tests never demonstrated, however, was an extraterrestrial origin. [researchgate.net]researchgate.netIsotope Ratios and Chemical Analysis of the 1957 Brazilian…May 22, 2022 — A sample from the Ubatuba fragment collected in Brazil in 19… [Journal of Scientific Exploration]journalofscientificexploration.orgJournal of Scientific ExplorationIsotope Ratios and Chemical Analysis of the 1957 Brazilian…22 May 2022 — A sample from the Ubatuba fr…
The laboratory history matters because the Ubatuba case evolved as scientific techniques improved. Early tests focused on basic composition and purity. Later work examined trace contaminants such as strontium and barium. By the 2000s and 2010s, researchers were using isotope-ratio analysis and high-resolution mass spectrometry to ask a more demanding question: did the metal contain isotopic signatures inconsistent with known terrestrial materials? The answer so far has been cautious and inconclusive. The fragments remain chemically unusual in some respects, but no test has established that they came from a non-human or non-Earth source. [researchgate.net]researchgate.netComposition Analysis of the Brazil MagnesiumThis analysis indicates that the existing Brazil samples are not as pure as magne- sium speci… [Journal of Scientific Exploration]journalofscientificexploration.orgThis formula was not used in…Read more…
From “pure magnesium” claims to more precise chemistry
The first Brazilian examinations reportedly concluded that the fragments were nearly pure magnesium. In UFO literature of the 1960s and 1970s, this finding became exaggerated into claims that the material was “100% pure” and therefore impossible to manufacture on Earth in 1957. Later reviews showed that this interpretation overstated what the early laboratories had actually demonstrated. [researchgate.net]researchgate.netArticle. Full-text available. May 2022. Robert M Powell · Michael Swords…
The problem was partly technological. Laboratories in the 1950s could identify the dominant element but often could not detect extremely small concentrations of impurities. When later researchers re-analysed surviving fragments with more sensitive instruments, they found that the samples were not perfectly pure magnesium at all. Instead, they were highly refined magnesium containing trace elements in low concentrations. [researchgate.net]researchgate.netPlot of the determination of the isotope ratios 25 MgHe performed careful measurements of the chemical composition of Ubatuba Mg for samp… [researchgate.net]researchgate.netOn Events Possibly Related to the ''Brazil MagnesiumInquiries in the Ubatuba area have yielded evidence of three aerial events that may b…
That distinction changed the scientific discussion. If the fragments had truly contained chemically impossible magnesium, the case would have been extraordinary. But once trace contaminants were identified, the question shifted from “impossible metal” to “unusually refined industrial metal”. The material became interesting rather than revolutionary.
Peter Sturrock and other later investigators noted that the fragments still appeared unusually pure compared with many industrial magnesium samples from the period. Some analyses suggested purity levels around 99.9% or higher. [researchgate.net]researchgate.netIsotope Ratios and Chemical Analysis of the 1957 Brazilian…May 22, 2022 — A sample from the Ubatuba fragment collected in Brazil in 19… Yet critics pointed out that high-purity magnesium already existed commercially in the 1950s, especially in aerospace and research applications. Dow Chemical and Soviet producers were both capable of producing refined magnesium through sublimation and other purification methods. [Science History Institute]sciencehistory.orgby Patrick H. Shea. DetailScience History InstituteMagnesium, from the Sea to the Stars3 Nov 2022 — Dow's gamble on magnesium helped push the boundaries of human e…
This weakened one of the strongest early UFO claims attached to the case. The fragments may have been unusual for Brazil in 1957, but they were not beyond known metallurgy.
Why strontium and barium attracted attention
The most persistent chemical puzzle in the Ubatuba samples involved trace impurities rather than the magnesium itself. Several analyses detected elements including calcium, strontium, and barium. Researchers focused especially on strontium because it did not fit neatly with expectations for ordinary commercial magnesium production of the era. NICAP [Kevin Randle]kevinrandle.blogspot.comKevin RandleA Different Perspective: The Ubatuba UFO Sample1 May 2010 — The analysis also reported on a high content of both strontium an…
In some reports, strontium concentrations were estimated at hundreds of parts per million. Investigators sympathetic to the UFO interpretation argued that this impurity pattern was difficult to explain through conventional manufacturing. Robert Powell and colleagues later summarised the issue by describing the fragments as extremely pure magnesium with an “odd strontium impurity”. [researchgate.net]researchgate.netComposition Analysis of the Brazil MagnesiumThis analysis indicates that the existing Brazil samples are not as pure as magne- sium speci…
However, sceptical analysis complicated the picture. Kevin Randle and other commentators pointed out that strontium alloys and experimental magnesium formulations did exist in industrial research programmes. Dow Chemical had reportedly investigated strontium-bearing magnesium alloys to improve hardness and performance characteristics. [Kevin Randle]kevinrandle.blogspot.comKevin RandleA Different Perspective: The Ubatuba UFO Sample1 May 2010 — The analysis also reported on a high content of both strontium an…
This does not prove the Ubatuba fragments came from ordinary industrial activity, but it removes the idea that strontium contamination was automatically anomalous or non-human. The chemistry may have been uncommon without being impossible.
Another complication is the uncertain provenance of the surviving samples. Researchers cannot prove that all tested fragments came from the same original source, or even from the alleged explosion near Ubatuba. Since the chain of custody begins with an anonymous letter sent to a newspaper, every later chemical result inherits that uncertainty. A chemically unusual fragment is not automatically evidence for a crashed craft if the fragment’s origin itself cannot be independently verified. [Journal of Scientific Exploration]journalofscientificexploration.orgJournal of Scientific ExplorationIsotope Ratios and Chemical Analysis of the 1957 Brazilian…22 May 2022 — A sample from the Ubatuba fr… 2researchgate.net
What the Colorado Project and later researchers concluded
The Ubatuba fragments became one of the few physical samples examined during the University of Colorado UFO study, often called the Condon Committee. Researchers compared the material with high-purity magnesium produced industrially in the United States and elsewhere. [researchgate.net]researchgate.netArticle. Full-text available. May 2022. Robert M Powell · Michael Swords…
The broad conclusion was restrained. The material was real magnesium, and some impurity patterns were interesting, but nothing in the analysis demonstrated extraterrestrial manufacture. One later summary stated the point directly: there was “no evidence” the fragments were of extraterrestrial origin. [researchgate.net]researchgate.netPlot of the determination of the isotope ratios 25 MgHe performed careful measurements of the chemical composition of Ubatuba Mg for samp…
That conclusion frustrated believers who expected a decisive breakthrough, but it also disappointed hard sceptics hoping for a simple debunking. The tests did not show the fragments were a hoax or ordinary scrap metal either. Instead, the case settled into an ambiguous middle ground:
- The metal was genuine and repeatedly testable.
- The magnesium was highly refined.
- Trace-element patterns raised questions.
- No isotopic or structural signature clearly exceeded known terrestrial science.
- The witness history remained extremely weak.
This ambiguity is one reason the Ubatuba case persisted for decades in UFO research literature while never achieving consensus.
Modern isotope testing and what it actually showed
The most technically advanced work on the fragments came much later, particularly in analyses published in 2022 by Robert Powell, Michael Swords, Mark Rodeghier, and Phyllis Budinger. Using high-resolution inductively coupled plasma mass spectrometry (HR-ICPMS), researchers tested magnesium isotope ratios and also examined isotopes of trace elements including strontium, copper, zinc, and barium. [researchgate.net]researchgate.netOn Events Possibly Related to the ''Brazil MagnesiumInquiries in the Ubatuba area have yielded evidence of three aerial events that may b… [Journal of Scientific Exploration]journalofscientificexploration.orgacs nanoUntitledPowell, R. M.; Swords, M.; Rodeghier, M.; Budinger, P. Isotope Ratios and Chemical Analysis of the 1957 Brazilian Ubatuba Fragmen…
This kind of testing matters because isotopic ratios can reveal where material formed or how it was processed. Elements created in different astrophysical environments can display distinctive isotope distributions. If the Ubatuba metal had shown strongly non-terrestrial isotope ratios, it would have been a major scientific result.
That did not happen.
The magnesium isotope ratios fell within known terrestrial ranges. This is one of the most important findings in the entire history of the case because it directly undercuts older claims that the magnesium itself was chemically impossible or alien in origin. [researchgate.net]researchgate.netOn Events Possibly Related to the ''Brazil MagnesiumInquiries in the Ubatuba area have yielded evidence of three aerial events that may b…
The trace-element isotope results were less clear. Researchers described them as inconclusive because measurements from different laboratories did not consistently agree. The authors suggested that future work would require improved isolation of trace elements before analysis. [researchgate.net]researchgate.netOn Events Possibly Related to the ''Brazil MagnesiumInquiries in the Ubatuba area have yielded evidence of three aerial events that may b…
The modern findings therefore produced a mixed picture:
- The fragments are still chemically interesting.
- Their purity remains notable.
- Some trace-element behaviour is difficult to interpret cleanly.
- But the core magnesium isotopes appear terrestrial.
For many researchers, this moved the Ubatuba fragments away from “alien alloy” territory and toward a narrower metallurgical mystery.
Why the fragments still matter in UFO history
Despite inconclusive results, the Ubatuba samples remain historically important because very few classic UFO cases include physical material that survived long enough for repeated scientific examination. Most famous UFO incidents rely entirely on testimony, photographs, or radar claims. Ubatuba instead generated decades of laboratory work. [researchgate.net]researchgate.netOn Events Possibly Related to the ''Brazil MagnesiumInquiries in the Ubatuba area have yielded evidence of three aerial events that may b…
The case also demonstrates how UFO evidence changes over time as scientific methods evolve. Early investigators could only measure broad composition. Later researchers examined trace contaminants. Modern analysts studied isotopes at microscopic levels. Each generation narrowed the room for dramatic claims while also preserving a small residue of unresolved questions.
The strongest current interpretation is therefore cautious rather than sensational. The Ubatuba fragments are authentic magnesium-rich samples with an unusual testing history. They may represent uncommon industrial material, experimental metallurgy, contamination effects, or something still poorly understood. But after decades of examination, laboratory science has not verified an extraterrestrial origin. [researchgate.net]researchgate.netOn Events Possibly Related to the ''Brazil MagnesiumInquiries in the Ubatuba area have yielded evidence of three aerial events that may b… [Journal of Scientific Exploration]journalofscientificexploration.orgJournal of Scientific ExplorationIsotope Ratios and Chemical Analysis of the 1957 Brazilian…22 May 2022 — A sample from the Ubatuba fr…
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Endnotes
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Source: researchgate.net
Link: https://www.researchgate.net/publication/360788800_Isotope_Ratios_and_Chemical_Analysis_of_the_1957_Brazilian_Ubatuba_FragmentSource snippet
Isotope Ratios and Chemical Analysis of the 1957 Brazilian...May 22, 2022 — A sample from the Ubatuba fragment collected in Brazil in 19...
Published: May 22, 2022
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Source: researchgate.net
Link: https://www.researchgate.net/publication/237233241_Composition_Analysis_of_the_Brazil_MagnesiumSource snippet
Composition Analysis of the Brazil MagnesiumThis analysis indicates that the existing Brazil samples are not as pure as magne- sium speci...
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Source: researchgate.net
Link: https://www.researchgate.net/figure/Comparison-of-Brazil-Specimen-With-US-and-USSR-High-Purity-Specimens-and-With-Specimens_tbl3_237233241Source snippet
Article. Full-text available. May 2022. Robert M Powell · Michael Swords...
Published: May 2022
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Source: nicap.org
Link: https://www.nicap.org/reports/ubatubanal.htmSource snippet
NICAPComposition Analysis Of The Brazilian Magnesiumby PA Sturrock · Cited by 6 — As in our analysis of the surface composition, we note...
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Source: researchgate.net
Link: https://www.researchgate.net/figure/Plot-of-the-determination-of-the-isotope-ratios-25-Mg-24-Mg-and-26-Mg-24-Mg-From_fig1_360788800Source snippet
Plot of the determination of the isotope ratios 25 MgHe performed careful measurements of the chemical composition of Ubatuba Mg for samp...
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Source: researchgate.net
Link: https://www.researchgate.net/publication/237309319On_Events_Possibly_Related_to_the%27%27Brazil_MagnesiumSource snippet
On Events Possibly Related to the ''Brazil MagnesiumInquiries in the Ubatuba area have yielded evidence of three aerial events that may b...
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Source: nicap.org
Link: https://www.nicap.org/reports/ubatuba/WALKER-JOHNSON-JUFOS%20.pdfSource snippet
ed to repeated chemical analyses with...
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Source: journalofscientificexploration.org
Link: https://journalofscientificexploration.org/index.php/jse/article/view/2415Source snippet
Journal of Scientific ExplorationIsotope Ratios and Chemical Analysis of the 1957 Brazilian...22 May 2022 — A sample from the Ubatuba fr...
Published: May 2022
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Source: journalofscientificexploration.org
Link: https://journalofscientificexploration.org/index.php/jse/article/view/2415/1565Source snippet
This formula was not used in...Read more...
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Source: sciencehistory.org
Title: by Patrick H. Shea. Detail
Link: https://www.sciencehistory.org/stories/magazine/magnesium-from-the-sea-to-the-stars/Source snippet
Science History InstituteMagnesium, from the Sea to the Stars3 Nov 2022 — Dow's gamble on magnesium helped push the boundaries of human e...
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Source: kevinrandle.blogspot.com
Link: https://kevinrandle.blogspot.com/2010/05/ubatuba-ufo-sample.htmlSource snippet
Kevin RandleA Different Perspective: The Ubatuba UFO Sample1 May 2010 — The analysis also reported on a high content of both strontium an...
Published: May 2010
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Source: journalofscientificexploration.org
Title: acs nano
Link: https://journalofscientificexploration.org/index.php/jse/citationstylelanguage/get/acs-nano?submissionId=2415Source snippet
UntitledPowell, R. M.; Swords, M.; Rodeghier, M.; Budinger, P. Isotope Ratios and Chemical Analysis of the 1957 Brazilian Ubatuba Fragmen...
Additional References
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Source: reddit.com
Link: https://www.reddit.com/r/ufo/comments/gezuyj/analysis_of_the_ubatuba_material_by_robert_powell/ -
Source: cufos.org
Link: https://cufos.org/PDFs/JUFOS/1992_NS_vol4_JUFOS.pdf -
Source: academia.edu
Title: Isotope Ratios and Chemical Analysis of the 1957 Brazilian Ubatuba Fragment
Link: https://www.academia.edu/130231629/Isotope_Ratios_and_Chemical_Analysis_of_the_1957_Brazilian_Ubatuba_FragmentSource snippet
Isotope Ratios and Chemical Analysis of the 1957 Brazilian...A sample from the Ubatuba fragment collected in Brazil in 1957 was tested w...
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Source: explorescu.org
Title: isotope ratios and chemical analysis of the 1957 brazilian ubatuba fragment
Link: https://www.explorescu.org/post/isotope-ratios-and-chemical-analysis-of-the-1957-brazilian-ubatuba-fragmentSource snippet
Isotope Ratios and Chemical Analysis of the 1957 Brazilian...26 Oct 2022 — A sample from the Ubatuba fragment collected in Brazil in 195...
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Source: facebook.com
Link: https://www.facebook.com/groups/387231512950059/posts/1307515824254952/Source snippet
nd the magnesium isotope ratios to be unusual. He...Read more...
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Source: ufxufo.org
Title: Dow Chemical and UFO Debris
Link: https://ufxufo.org/dow/dow.htmSource snippet
UFXThe unusually high purity of the UFO-related magnesium detected by the Brazilian laboratory may have set off alarms in the US, and par...
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Source: podcastufo.com
Title: metal from the ufo
Link: https://podcastufo.com/blog/metal-from-the-ufoSource snippet
21 Feb 2021 — Sturrock reported that he tested every kind of industrial 99% Magnesium produced at the time, including Russian ones – none...
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Source: ufos-scientificresearch.blogspot.com
Title: Ubatuba Magnesium Sample
Link: https://ufos-scientificresearch.blogspot.com/2020/06/ubatuba-magnesium-sample-some.htmlSource snippet
6. Dr. Michael Swords. 7. Robert Powell. New... strontium, copper, zinc and barium, match terrestrial values, or not.Read more...
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Source: youtube.com
Title: UFO Crash Debris! (Art’s Parts)
Link: https://www.youtube.com/watch?v=v4HWxOel7zwSource snippet
The CIA's UAP & Alien Research! 'Their Brains Looked Fried' | Stanford's Garry Nolan...
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Source: youtube.com
Title: UFO explosion fragments from Ubatuba, Brazil | Garry Nolan and Lex Fridman
Link: https://www.youtube.com/watch?v=EBsUIj_UBBESource snippet
Garry Nolan: UFOs and Aliens | Lex Fridman Podcast #262...
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