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Abstract
We show that bulk amorphous silica recovered from shock-wave experiments on quartz to 57 GPa is not a true glass but rather keeps a large degree of long-range structural information that can be recovered by static cold recompression to 13 GPa. At this pressure, shock-retrieved silica assumes the structure of crystalline stishovite. A minor amount of material recovers the structure of a recently discovered new silica polymorph.
Keywords : Meteorite; shock; phase transition; amorphous to solid; XRD data; stishovite; high pressure
Received: 2005-6-20
Accepted: 2006-5-30
Published Online: 2015-3-31
Published in Print: 2006-11-1
© 2015 by Walter de Gruyter Berlin/Boston
