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A monoclinic mineral, (Ca,Na)(Ca,Mg,Fe)Si2 O6 , in the range 20% augite to 20% aegirine end members of the pyroxene group. Formerly called acmite-augite, aegirineaugite.
Source: Dictionary of Mining, Mineral, and Related Terms

Sponsor: Copperhead .177 Cal, 5.1 Grains, BBs, 6000ct

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