siderotil
Sign in to saveAlso known as IMA1962-006a
Siderotil is an iron(II) sulfate hydrate mineral with formula: FeSO4·5H2O which forms by the dehydration of melanterite. Copper commonly occurs substituting for iron in the structure. It typically occurs as fibrous or powdery encrustations, but may also occur as acicular triclinic crystals.
Key facts
- Mineral.name
- Siderotil
- Mineral.category
- Sulfate minerals
- Mineral.formula
- Fe2+SO4·5H2O
- Mineral.IMAsymbol
- Sdt
- Mineral.strunz
- 7.CB.20
- Mineral.system
- Triclinic
- Mineral.class
- Pinacoidal () (same H-M symbol)
- Mineral.symmetry
- P
- Mineral.unit cell
- a = 6.26 Å, b = 10.63 Å c = 6.06 Å; α = 97.25° β = 109.67°, γ = 75°; Z = 2
- Mineral.color
- Pale green, yellowish, white
- Mineral.habit
- Fibrous to powdery, rarely as acicular crystals
- Mineral.mohs
- 2.5
- Mineral.luster
- Vitreous or silky
- Mineral.diaphaneity
- Transparent to translucent
- Mineral.gravity
- 2.1 - 2.2
- Mineral.opticalprop
- Biaxial (-)
- Mineral.refractive
- nα = 1.513 - 1.515 nβ = 1.525 - 1.526 nγ = 1.534 - 1.536
- Mineral.birefringence
- δ = 0.021
via Wikipedia infobox
Wikidata facts
- Image
- Siderotil.jpg
Show 6 more facts
- Nickel-Strunz 9th edition (updated 2009)
- 7.CB.20
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 7.CB.20
- IMA Mineral Symbol
- Sdt
- chemical formula
- Fe(SO₄)·5H₂O
- Strunz 8th edition (series ID, updated)
- VI/C.03a
- Commons category
- Siderotil
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Article
1 sectionsContents
- References
Siderotil is an iron(II) sulfate hydrate mineral with formula: FeSO4·5H2O which forms by the dehydration of melanterite. Copper commonly occurs substituting for iron in the structure. It typically occurs as fibrous or powdery encrustations, but may also occur as acicular triclinic crystals.
It was first described in 1891 for an occurrence in the Idrija Mine, Idrija, Slovenia. Its name derives from the Greek sideros (iron) and tilos (fiber) in reference to its iron content and typical fibrous form. However, the material at the Idrija location may not be siderotil, but the mineral has been authenticated from a wide variety of worldwide locations.