Jadeite: Shock-Induced Formation from Oligoclase, Ries Crater, Germany

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Science  05 Sep 1969:
Vol. 165, Issue 3897, pp. 1005-1008
DOI: 10.1126/science.165.3897.1005


Jadeite (high-pressure sodium aluminum pyroxene) has been identified in a shock-phase assemblage of oligoclase. The shock assemblage consists of minute particles with high refractive indices that contain at least two phases: one (identified by x-ray) is a jadeite that is nearly pure NaAlSi2O6; the other has the chemical composition of oligoclase minus jadeite and appears to be largely amorphous.

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