Abstract
The major and trace element abundances in Henbury impact glass, Darwin glass and Australites are reviewed. No variation in glass composition occurs across the Henbury strewnfield, and there is no change in composition for fifty elements between the impact glass and the parental subgreywacke sediment, except for addition of Fe, Ni, and Co from the meteorite. The elemental abundances in Darwin glass are consistent with a derivation by meteorite impact on argillaceous sandstones. The composition of the australite group of tektites is very close to that of subgreywacke sandstones for forty elements. From the impact glass analogy, it is concluded that selective loss during melting is a minor process, and australites are considered to be derived from subgreywacke type sandstones by cometary or asteroidal impact.
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