Magnesium isotope fractionation chart modified from the graph used by Dr. Peter Sturrock in his analysis of the Ubatuba UFO fragment. Magnesium bearing compounds, metals, and minerals should all plot on or very close to the line. A chondite is a type of meteorite and since it does not originate from Earth does not plot on the line. The Roswell AH-1 alloy plots way of the line. The AH-1 plot is an anomaly that is either an analytical error or the material is not from Earth. More testing is needed to verify the data to see if it is an error or its from another world. (image credit: Frank Kimbler)
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