Abstract
AbstractRaman spectra were recorded of the various components of a series of about 20 ceramic shards from nine Portuguese ships that were wrecked around the South African coast between 1550 and 1650. α‐Quartz was a typical component of the porcelain body. The blue pigment could be identified as CoAl2O4, or cobalt blue, and the glaze covering the ceramic surface presented a series of broad Raman bands typical of amorphous silicates. One shard from the Santa Maria Madre de Deus, which looked different form the other shards, was shown not to be a porcelain owing to the various components (CaCO3, CaSO4 · 2H2O or gypsum, amorphous carbon, anatase) which could be identified in the ceramic. This is an indication that this one piece is unlikely to be of the same Chinese origin as the Ming porcelain shards. Copyright © 2004 John Wiley & Sons, Ltd.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
