Affiliation: | 1. Poroperm-Geochem Ltd., Chester Street, CH4 8RD, Saltney Chester, United Kingdom 2. Department of Geology, University of South Carolina, 29208, Columbia, South Carolina 3. P.O. Box 2189, 77252-2189, Houston, Texas, USA 4. Department of Geology, University of Illinois, 61801, Urbana, Illinois, USA
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