释义 |
acmite
acmite (ˈækˌmaɪt) na silicate mineral with chemical formula NaFeSi2O6, consisting of pyramid-shaped crystals; aegiriteacmite
acmite[′ak‚mīt] (mineralogy) NaFeSi2O6 A brown or green silicate mineral of the pyroxene group, often in long, pointed prismatic crystals; hardness is 6-6.5 on Mohs scale, and specific gravity is 3.50-3.55; found in igneous and metamorphic rocks. |