A mineral of the melilite group, occurring typically as blocky prisms in siliceous limestone and dolomite rocks and in blast-furnace slags.
Åkermanite is an aluminosilicate of calcium and magnesium, Ca₂MgSi₂O₇. Crystal system: tetragonal.
Late 19th century; earliest use found in American Journal of Science. From the name of Richard Åkerman, Swedish metallurgist + -ite, after German Åkermanit.