Gaylussite formation at mono lake, california

Details Gaylussite formation at mono lake, california Gaylussite formation at mono lake, california

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55.1743b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 55, Issue 6, pp.1743-1747

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Scientific paper

The salinity of Mono Lake has steadily increased since 1941 from 50%. to about 90%. due to diversion of tributary streams. This increase has resulted in the newly discovered precipitation of gaylussite (Na 2 Ca(CO 3 ) 2 · 5H 2 O). Chemical modeling of the lake water using Pitzer equations suggests that gaylussite has been forming year round since about 1970 when the salinity first exceeded 80%., and that it was earlier forming intermittently at lower salinities in the winter shortly after diversion began, breaking down incongruently to aragonite during summers. Lake water appears to remain at a constant 9-fold supersaturation with aragonite at all salinities, perhaps buffered by monohydrocalcite which appears to be just at saturation for all salinities. Other saline lakes also appear to be buffered by monohydrocalcite.

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