A rare mineral containing iron oxide and other compounds, typically appearing in reddish crystals.
From Greek 'erythros' (red) + 'sideros' (iron) + '-ite' (mineral suffix). The term combines color description with mineral composition to name this iron-containing stone.
Mineralogists love layering Greek roots to describe exactly what's in a rock—erythrosiderite's name literally tells you it's a red iron mineral before you even look at it under a microscope.
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