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Definition of Pyrosmalite
1. n. 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.
Definition of Pyrosmalite
1. Noun. (minerology) A mineral, usually of a pale brown or grey-greenish colour, consisting chiefly of the hydrous silicate of iron and manganese. ¹
¹ Source: wiktionary.com