The effect of organic acids on plagioclase dissolution rates and stoichiometry

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Geochimica et Cosmochimica Acta

DOI:https://doi.org/10.1016/0016-7037(93)90386-B· OSTI ID:805068

Welch, Susan A ^[1]; Ullman, William J

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1. College of Marine Studies, University of Delaware, Lewes, DE (US)

The rates of plagioclase dissolution in solutions containing organic acids are up to 10 times greater than the rates determined in solutions containing inorganic acids at the same acidity. Initial rates of dissolution are poorly reproduced in replicate experiments. After a day, however, the rates of plagioclase dissolution calculated from the rates of silicon release are reproducible and constant for up to 19 days.

• Research Organization: College of Marine Studies, University of Delaware, Lewes, DE (US)
• Sponsoring Organization: Subsurface Science Program, Office of Health and Environmental Research, US DOE (US)
• DOE Contract Number: FG02-91ER61184
• OSTI ID: 805068
• Journal Information: Geochimica et Cosmochimica Acta, Journal Name: Geochimica et Cosmochimica Acta Vol. 57; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
ANORTHOSITES
DISSOLUTION
INORGANIC ACIDS
ORGANIC ACIDS
PH VALUE
SILICON
STOICHIOMETRY