römerite
/ˈrəːmərʌɪt/(also roemerite) Mineralogy
noun
An iron-containing mineral which occurs as rust-brown to yellow crystals, typically as an oxidation product of pyrite.
- Römerite is a hydrated sulphate of iron (ii) and iron (iii), Fe2+Fe2 3+(SO4)4·14H20. Crystal system: triclinic..
Origin
Mid 19th century; earliest use found in American Journal of Science. From the name of Friedrich Adolph Römer, German geologist + -ite, after German Römerit.