
1) Iron mineral 2) Monoclinic mineral
Found on
https://www.crosswordclues.com/clue/cronstedtite

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. Cronstedtite is a major...
Found on
http://en.wikipedia.org/wiki/Cronstedtite

• (n.) A mineral consisting principally of silicate of iron, and crystallizing in hexagonal prisms with perfect basal cleavage; -- so named from the Swedish mineralogist Cronstedt.
Found on
http://thinkexist.com/dictionary/meaning/cronstedtite/
Cron'stedt·ite noun (Min.) A mineral consisting principally of silicate of iron, and crystallizing in hexagonal prisms with perfect basal cleavage; -- so named from the Swedish mineralogist
Cronstedt .
Found on
http://www.encyclo.co.uk/webster/C/190

Cronstedtite, named after the Swedish mineralogist Cronstedt, is a mineral consisting principally of silicate of iron, and crystallizing in hexagonal prisms with a perfect basal cleavage.
Found on
http://www.probertencyclopaedia.com/browse/HC.HTM
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