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Science 7 March 2008:
Vol. 319. no. 5868, p. 1336
DOI: 10.1126/science.1151241
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Technical Comments

Comment on "Early Archaean Microorganisms Preferred Elemental Sulfur, Not Sulfate"

Huiming Bao*, Tao Sun, Issaku Kohl and Yongbo Peng

Department of Geology and Geophysics, Louisiana State University, E235 Howe-Russell Geoscience Complex, Baton Rouge, LA 70803, USA.


Figure 1 Fig. 1. A two-endmember mixing model for sulfides in early Archaean oceans presented in a {Delta}33S-{delta}34S plane. A mixed sulfide pool would lie in the shaded area. Observed data for microscopic pyrites (1) are within the orange circle close to the origin. [View Larger Version of this Image (25K GIF file)]
 

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Science. ISSN 0036-8075 (print), 1095-9203 (online)