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- Title
Comment on Lee et al. (2022) "Reexamination of the structure of opal-A: A combined study of synchrotron X-ray diffraction and pair distribution function analysis"— Concerning opal.
- Authors
de Jong, B.H.W.S.
- Abstract
This document provides a comprehensive overview of opal, an amorphous solid, discussing its composition, properties, and various types of opal textures. It highlights that opal does not contain cristobalite or tridymite domains, distinguishing it from other substances. The document also explores the presence of water in opals and concludes that opal-A represents a specific stage in the formation of opals. Additionally, the author questions the usefulness of opal phase transitions as stratigraphic markers in sedimentary basins. The document acknowledges the assistance of other researchers and is dedicated to the author's advisor.
- Subjects
DISTRIBUTION (Probability theory); X-ray diffraction; GEOCHEMISTRY; PHYSICAL &; theoretical chemistry; OPALS; SILICON isotopes; PHASE separation
- Publication
American Mineralogist, 2024, Vol 109, Issue 2, p392
- ISSN
0003-004X
- Publication type
Article
- DOI
10.2138/am-2022-8863