Siderotil
Encyclopedia
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 lacations.
Iron(II) sulfate
Iron sulfate or ferrous sulfate is the chemical compound with the formula FeSO4. Known since ancient times as copperas and as green vitriol, the blue-green heptahydrate is the most common form of this material...
hydrate mineral with formula: FeSO4·5H2O which forms by the dehydration of melanterite
Melanterite
Melanterite is a mineral form of hydrous iron sulfate: FeSO4·7H2O. It is the iron analogue of the copper sulfate chalcanthite. It alters to siderotil by loss of water. It is a secondary sulfate mineral which forms from the oxidation of primary sulfide minerals such as pyrite and marcasite in the...
. 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
Idrija
Idrija is a small town and municipality in the Goriška region of Slovenia. It is known for its mercury mine and lace....
, Slovenia
Slovenia
Slovenia , officially the Republic of Slovenia , is a country in Central and Southeastern Europe touching the Alps and bordering the Mediterranean. Slovenia borders Italy to the west, Croatia to the south and east, Hungary to the northeast, and Austria to the north, and also has a small portion of...
. 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 lacations.