Red trinitite is found to the
north of ground zero of the Trinity test. The red colour is due to the
presence of copper in the glass. Close examination
with the optical microscrope and scanning
electron microscope reveals that
this glass contains a number of metallic chondrules.
These metallic chondrules are melted bits
of the first atomic bomb and the surrounding support
structures — history encased in glass.
From Trinitite - the atomic rock by Nelson Eby et al.
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