The origin of GEMS in IDPs as deduced from microstructural evolution of amorphous silicates with annealingC. Davoisne, Z. Djouadi, H. Leroux, L. d'Hendecourt, A. Jones and D. DeboffleA&A, 448 1 (2006) L1-L4DOI: https://doi.org/10.1051/0004-6361:200600002