Rozenite
A variety of Minerals

What is Rozenite?
Rozenite is a hydrous iron sulfate mineral, FeSO4•4(H2O). It occurs as a secondary mineral, formed under low humidity at less than 21 °C (70 °F) as an alteration of copper-free melanterite, which is a post mine alteration product of pyrite or marcasite. It also occurs in lacustrine sediments and coal seams. Associated minerals include melanterite, epsomite, jarosite, gypsum, sulfur, pyrite, marcasite and limonite. It was first described in 1960 for an occurrence on Ornak Mountain, Western Tatra Mountains, Małopolskie, Poland. It was named for Polish mineralogist Zygmunt Rozen (1874–1936).
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Rozenite Localities Map
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Quick Facts
Physical Properties
- Color
- Colourless to white, pale green
- Hardness (Mohs)
- 2 - 3
- Density
- 2.29 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- FeSO4 · 4H2O
- Elements
- Fe, H, O, S

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