humboldtine

humboldtine

[′həm‚bōl‚tēn]
(mineralogy)
FeC2O4·2H2O A mineral composed of hydrous ferrous oxalate. Also known as humboldtite; oxalite.
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References in periodicals archive ?
Humboldtine is exceedingly rare at the Francon quarry, where it has been found as bright yellow inclusions in quartz (Sabina, 1992, 1994).
ER Halloysite VR VR VR VR Halotrichite VR VR VR Harmotome ER ER Hematite C C Hochelagaite ER ER Humboldtine ER ?
The humboldtine is entirely natural and not the result of any chemical treatment of the specimens.