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Dominant species
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Romerite
Romerite
Chemical
Formula
Fe3SO44·14H2O
Species
Sulfates
Roemerite

the components of Fe(2+)Fe(3+)2(SO4)4·14H2O.

Three oblique system. Plate shaped crystals, granular, stalactite, crusty aggregates. Yellow, red, purple and brown brown. Streaks of gray. Transparent to translucent. Glass glossy, resinous luster or greasy luster. Two groups of cleavage. Conchoidal fracture. The hardness of 3 ~ 3.5. Brittle. Density of 2.08 to 2.18 g / cm ^3. Soluble in water.

Produced in the oxidation zones of copper lead zinc deposit in the bottom or secondary enrichment zone, and copperas, iron, iron vitriol alum water Co.