Lime to Gypsum
Name: Kate B.
Date: February 9, 2004
How does Thiobacillus ferrooxidans change lime to gypsum?
The vast majority of gypsum is formed as a precipitate of seawater. However, it is apparently
possible for this microbe to form gypsum (hydrated calcium sulfate) from limestone (calcium
carbonate) under certain conditions. But how it does it is more a question for a chemist or
biologist than a geologist or civil engineer (or at least this geologist/civil engineer!)
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Update: June 2012