schwertmannite
Sign in to saveAlso known as glockerite, IMA1990-006, vitriol ochre
Schwertmannite is an iron-oxyhydroxysulfate mineral with an ideal chemical formula of or . It is an opaque tetragonal mineral typically occurring as brownish yellow encrustations. It has a Mohs hardness of 2.5 – 3.5 and a specific gravity of 3.77 – 3.99.
Wikidata facts
- Image
- Crosta de schwertmannita obtinguda de zona de drenatge àcid de mines prop de Corta Atalaya, Huelva, Andalusia.jpg
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- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 7.DE.15
- Commons category
- Schwertmannite
- Nickel-Strunz 9th edition (updated 2009)
- 7.DE.15
- IMA Mineral Symbol
- Swm
- chemical formula
- Fe³⁺₁₆(OH,SO₄)₁₂-₁₃O₁₆ * 10-₁₂H₂O
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Schwertmannite is an iron-oxyhydroxysulfate mineral with an ideal chemical formula of or . It is an opaque tetragonal mineral typically occurring as brownish yellow encrustations. It has a Mohs hardness of 2.5 – 3.5 and a specific gravity of 3.77 – 3.99.
It was first described for an occurrence in Finland in 1994 and named for Udo Schwertmann (born 1927), a soil scientist at the Technical University of Munich, Munich, Germany.