Image:Mineraly.sk_-_cronstedtit.jpg '''Cronstedtite''' is a complex Iron silicate mineral belonging to the Serpentine group of minerals. It has a formula of Fe2+2Fe3+(Si,Fe3+O5)(OH)4. It was discovered in 1821 and named in honor of Swedish Mineralogist Axel_Fredrik_Cronstedt (1722-1765). It has been found in Bohemia in the Czech_Republic and in Cornwall, England. ==References== *American Mineralogical Society *Mindat with locations *Webmineral Category:Iron_minerals Category:Silicate_minerals {{mineral-stub}} It:Cronstedtite Nl:Cronstedtiet Sk:Cronstedtit