Szomolnokite

A variety of Minerals

Szomolnokite specimen - rock identification

What is Szomolnokite?

Szomolnokite (FeSO4·H2O) is a monoclinic iron sulfate mineral forming a complete solid solution with magnesium end-member kieserite (MgSO4·H2O). In 1877 szomolnokite’s name was derived by Joseph Krenner from its type locality of oxidized sulfide ore containing iron in Szomolnok, Slovakia (Hungary at the time). As of mid-January 2020 the only continent on which szomolnokite has not been found and reported is Antarctica.

Szomolnokite Market Value Calculator

Estimate the market value of Szomolnokite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

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Szomolnokite Localities Map

See where Szomolnokite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Quick Facts

Physical Properties

Color
Pale yellow or reddish-brown, may also be light blue, very pale greenish white to white, rarely pink due to cobalt
Hardness (Mohs)
2.5
Density
3.1 g/cm³
Streak
Not reported.

Chemical Properties

Chemical Formula
FeSO4 · H2O
Elements
Fe, H, O, S
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