Mineral phase analysis of deep-sea hydrothermal particulates by a Raman spectroscopy expert algorithm : toward autonomous in situ experimentation and exploration
Breier, John A.
German, Christopher R.
White, Sheri N.
MetadataShow full item record
KeywordHydrothermal; Mineralogy; Optical instruments; Raman spectroscopy; Analytic techniques; Chemical sensor
This paper demonstrates that a Raman spectroscopy, point-counting technique can be used for phase analysis of minerals commonly found in deep-sea hydrothermal plumes, even for minerals with similar chemical compositions. It also presents our robust autonomous identification algorithm and spectral database, both of which were developed specifically for deep-sea hydrothermal studies. The Raman spectroscopy expert algorithm was developed and tested against multicomponent mixtures of minerals relevant to the deep-sea hydrothermal environment. It is intended for autonomous classification where many spectra must be examined with little or no human involvement to increase analytic precision, accuracy, and data volume or to enable in situ measurements and experimentation.
Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry Geophysics Geosystems 10 (2009): Q05T05, doi:10.1029/2008GC002314.
Showing items related by title, author, creator and subject.
Laser Raman spectroscopy as a technique for identification of seafloor hydrothermal and cold seep minerals White, Sheri N. (2008-11)In situ sensors capable of real-time measurements and analyses in the deep ocean are necessary to fulfill the potential created by the development of autonomous, deep-sea platforms such as autonomous and remotely operated ...
White, Sheri N.; Brewer, Peter G.; Peltzer, Edward T. (2004-10-29)A new deep-sea laser Raman spectrometer (DORISS – Deep Ocean Raman In Situ Spectrometer) is used to observe the preferential dissolution of CO2 into seawater from a 50%-50% CO2-N2 gas mixture in a set of experiments that ...
Hester, K. C.; Dunk, R. M.; White, Sheri N.; Brewer, Peter G.; Peltzer, Edward T.; Sloan, E. D. (2006-11-14)Oceanic gas hydrates have been measured near the seafloor for the first time using a seagoing Raman spectrometer at Hydrate Ridge, Oregon, where extensive layers of hydrates have been found to occur near the seafloor. All ...