rhomboclase
/ˈrɒmbəkleɪz/ /ˈrɒmbəkleɪs/Mineralogy
noun
An iron sulphate mineral occurring as colourless or pale yellow, green, or blue tabular crystals, commonly as an oxidation product of pyrite.
- Rhomboclase is a hydrated acid sulphate of iron (iii), HFe(SO4)2·4H2O. Crystal system: orthorhombic..
Origin
Early 20th century; earliest use found in Mineralogy Magazine. From rhombo- + -clase, after Hungarian rhomboklas.