Pyrosmalite

Py`ros´ma`lite

(Min.) A mineral, usually of a pale brown or of a gray or grayish green color, consisting chiefly of the hydrous silicate of iron and manganese; - so called from the odor given off before the blowpipe.

pyrosmalite

[pī′räz·mə‚līt] (mineralogy) (Mn,Fe)₄Si₃O₇(OH,Cl)₆ A colorless, pale-brown, gray, or gray-green mineral composed mainly of basic iron manganese silicate with chlorine.

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