A type of green pyroxene mineral containing sodium, iron, and silicate, commonly found in igneous rocks and used in mineralogical studies.
Named after Aegir, the Norse sea god, because of the mineral's association with green color reminiscent of the sea, combined with the mineral suffix -ine. The naming reflects 19th-century mineralogists' poetic approach to classification.
Mineralogists literally named a green crystal after the Norse god of the sea—it's a delightfully whimsical moment in scientific nomenclature where mythology meets geology, probably because someone thought the green color looked ocean-like.
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