Dana Oxide Classification<br><small>Multiple Oxides with Nb, Ta, and Ti</small>

Dana Oxide Classification
Multiple Oxides with Nb, Ta, and Ti
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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 Oxide Classification
Multiple Oxides with Nb, Ta, and Ti

08.06 Multiple Oxides with Nb, Ta, and Ti

08.06.01 Franconite Group

08.06.01.01 Franconite Na2Nb4O11•9(H2O) Unk Mono
08.06.01.02 Hochelagaite (Ca,Na,Sr)Nb4O11•8(H2O) Unk Mono
08.06.01.03 Ternovite! (Mg,Ca)Nb4O11-n(H2O) where n ~ 10 P 2/m,P 2,Pm Mono

08.06.02 Calciotantite Group

08.06.02.01 Calciotantite Ca(Ta,Nb)4O11 P 6322 6 2 2
08.06.02.02 Natrotantite Na2Ta4O11 R 3-c 3 2/m
08.06.02.03 Irtyshite Na2(Ta,Nb)4O11 P 63/m 6/m