This arrangement of mineral species is based on Dana's New Mineralogy by Richard V. Gaines, H. Catherine Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig, with sections by Vandall T. King, Illustrations by Eric Dowty, (ISBN: 047119310-0) Copyright © 1997, John Wiley & Sons, Inc.". This material is used by permission of John Wiley & Sons, Inc. Follow this link for a short discussion on the Dana Classification Number.
69.02.01a Aenigmatite and related species (Aenigmatite subgroup) 69.02.01a.01 Aenigmatite (Na,Ca)4(Fe++,Ti,Mg)12Si12O40 P1 1 69.02.01a.02 Dorrite Ca2Mg2Fe+++4(Al,Fe+++)4Si2O20 P1,P 1 Tri 69.02.01a.03 Hogtuvaite (Ca,Na)2(Fe++,Fe+++,Ti,Mg,Mn)6(Si,Be,Al)6O20 P1 1 69.02.01a.04 Krinovite NaMg2CrSi3O10 P1 1 69.02.01a.05 Rhonite Ca2(Mg,Fe++,Fe+++,Ti)6(Si,Al)6O20 P1 1 69.02.01a.06 Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 P1 1 69.02.01a.07 Welshite Ca4Mg9Sb3O4[Si6Be3AlFe2O36] P1 1 69.02.01a.08 Wilkinsonite Na2Fe++4Fe+++2Si6O20 P1 1 69.02.01a.09 Makarochkinite! Ca2Fe++4Fe+++TiSi4BeAlO20 P1 1