acmite
/ˈakmʌɪt/Mineralogy
noun
An iron-containing mineral of the pyroxene group, which occurs as dark green, pointed crystals.
- Acmite is a silicate of sodium and iron, NaFeSi2O6. Crystal system: monoclinic..
Origin
Early 19th century. Originally from Swedish Achmit from Greek ἀχμή, supposed variant of ancient Greek ἀκμή point + -it, so called on account of the shape of its crystals. In later use altered after ancient Greek ἀκμή.
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