Chao, Edward C. T. U.S. Geological Survey, Department of the Interior, Reston, Virginia.
Last reviewed:November 2019
- Additional Reading
A mineral having composition FeSO4·7H2O. Melanterite occurs mainly in green, fibrous or concretionary masses or in short, monoclinic, prismatic crystals (see illustration). Fracture is conchoidal and luster is vitreous. Hardness is 2 on Mohs scale, and specific gravity 1.90. The mineral is similar to chalcanthite, has an astringent taste, and is readily soluble in water.
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