dedolomitize

/dee doh"leuh muy tuyz', -mi-, -dol"euh-/, v.t., dedolomitized, dedolomitizing.

to transform (dolomite or dolomitic limestone) by separating the dolomite into calcium carbonate and magnesium carbonate.

Also, esp. Brit., dedolomitise.

[1900-05; DE- + DOLOMITE + -IZE]