A nebular origin for chondritic fine-grained phyllosilicates

Fred J. Ciesla, Dante S. Lauretta, Barbara A. Cohen, Lon L. Hood

Research output: Contribution to journalArticlepeer-review

108 Scopus citations


Hydrated minerals occur in accretionary rims around chondrules in CM chondrites. Previous models suggested that these phyllosilicates did not form by gas-solid reactions in the canonical solar nebula. We propose that chondrule-forming shock waves in icy regions of the nebula produced conditions that allowed rapid mineral hydration. The time scales for phyllosilicate formation are similar to the time it takes for a shocked system to cool from the temperature of phyllosilicate stability to that of water ice condensation. This scenario allows for simultaneous formation of chondrules and their fine-grained accretionary rims.

Original languageEnglish (US)
Pages (from-to)549-552
Number of pages4
Issue number5606
StatePublished - Jan 24 2003

ASJC Scopus subject areas

  • General


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