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Message * Impact event minerals Diamond, Iridium, Breccia, Tektite, Diamond flaws, Vaalbara, Spherulite, Australite, Moldavite, Darwin glass, Stishovite, Coesite, Maskelynite, Suevite, Lechatelierite, Bediasite, Impactite, Indochinite, Georgiaite - 1156801281 - 9781156801284