ac·mite | \ ˈak-ˌmīt \
Definition of acmite
: a mineral consisting of a brown or green silicate of sodium and iron NaFe(SiO3)2 belonging to the pyroxene group and often found in long prismatic crystals characteristically pointed (hardness 6–6.5, specific gravity 3.50–3.55)
— called also aegirite
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