Humboldtine is a rarely occurring mineral from the mineral class of "organic compounds" with the chemical composition FeC2O4•2H2O and is therefore a water-containing iron(II) oxalate or the iron salt of oxalic acid.
{{Infobox mineral | name = Humboldtine | image = Humboldtine.jpg | imagesize = 260px | formula = FeC2O4·2H2O | IMAsymbol = Hbd | system = Monoclinic | color = Yellow to amber-yellow | cleavage = Perfect on {110}, imperfect on {100} and {010} | mohs = 1.5 to 2 | luster = Resinous to dull | streak = Pale yellow | diaphaneity = Transparent to opaque | density = 2.28 g/cm3 (measured)2.307 g/cm3 (calculated) | refractive = nα = 1.494nβ = 1.561nγ = 1.692 }}
Humboldtine is a rarely occurring mineral from the mineral class of "organic compounds" with the chemical composition FeC2O4•2H2O and is therefore a water-containing iron(II) oxalate or the iron salt of oxalic acid.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).