Dana Cyclosilicate Classification<br><small>3-Membered Rings</small>

Dana Cyclosilicate Classification
3-Membered Rings
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Minerals Arranged by the New Dana Classification

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.

Note: Space Group in Red   Point Group in Green.
* - Not IMA Approved.

! - Dana Number Added or Changed.

? - IMA Discredited Mineral Name.

Dana Cyclosilicate Classification
3-Membered Rings

59.01 Cyclosilicates Cyclosilicate Three-Membered Rings anhydrous, no other anions

59.01.01 Benitoite group

59.01.01.01 Bazirite BaZrSi3O9 P 6m2 6 m2
59.01.01.02 Benitoite BaTiSi3O9 P 6c2 6 m2
59.01.01.03 Pabstite Ba(Sn,Ti)Si3O9 P 6c2 6 m2
59.01.01.04 Wadeite K2ZrSi3O9 P 63/m 6/m

59.01.02 Walstromite group

59.01.02.01 Walstromite BaCa2Si3O9 P1 1
59.01.02.02 Margarosanite Pb(Ca,Mn++)2Si3O9 P1 1