Hexagonal Ditrigonal Dipyramidal Class

Hexagonal Ditrigonal Dipyramidal Class
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Hexagonal Ditrigonal Dipyramidal Class

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Axial Configuration Paper Model

Hexagonal - Ditrigonal Dipyramidal Class (6 m2)  Mineral Species Listing

System Class Name

AXES

 Planes Center
Hermann-
Maugin
Symbols
2-Fold 3-Fold 4-Fold 6-Fold
Hexagonal Ditrigonal Dipyramidal 3 1 - - 4 - 6m2

Synonyms: Trigonal Class, Benitoite Type, Trigonal Hemihedral, Trigonotype, or Ditrigonal Equatorial Class.

Space Groups in class: P62c, P62c, P62m, P6c2, and P6m2.

Example of the Hexagonal - ditrigonal dipyramidal class symmetry in stereo using JCrystal Applet by Steffen Weber.

Java Applet Not Started
Example of the Hexagonal - ditrigonal dipyramidal class symmetry in stereo using Faces (version 3.5) by Georges Favreau.
Hexagonal -6m2.gif (3744 bytes)
 
25 Minerals From the H-M Class Hexagonal - Ditrigonal Dipyramidal (6 m2
Mineral Space Grp a c Z Vol (Ang3) Calc Dens
Barringerite P 62m 5.8700 3.4400 3 102.7 6.99
Bastnasite-(Ce) P 62c 7.1600 9.7900 6 434.7 5.02
Bastnasite-(La) P 62c 7.1180 9.7620 6 428.3 5.07
Bastnasite-(Y) P 62c 6.5700 9.4800 6 354.4 4.72
Bazirite P 6m2 6.7690 10.0200 2 397.6 3.82
Belkovite P 62m 8.9960 7.7990 1 546.6 4.28
Benitoite P 6c2 6.6000 9.7100 2 366.3 3.75
Connellite P 62c 15.7800 9.1000 2 1962.4 3.46
Despujolsite P 62c 8.5600 10.7600 2 682.8 2.55
Grimselite P 62c 9.3000 8.2600 2 618.7 3.27
Hydroxylbastnasite-(Ce) P 62c 7.2300 9.9800 6 451.8 4.79
Hydroxylbastnasite-(Nd) P 62c 7.1910 9.9210 6 444.3 4.96
IMA2009-013 P 6 m2 5.1109 8.6713 1 196.2 4.20
Jagoite P 62c 8.5280 33.3300 8 2099.2 5.28
Liottite P 6m2 12.8420 16.0910 3 2298.2 2.61
Monipite P 6 2m 5.6810 3.7040 3 103.5 8.93
Offretite P 6m2 13.3070 7.5920 1 1164.3 2.07
Pabstite P 6c2 6.7060 9.8290 2 382.8 4.05
Peprossiite-(Ce) P 62m 4.6100 9.3580 1 172.2 3.93
Pittongite P 6m2 7.2860 50.4900 36 2321.2 5.73
Qusongite P 6 2m 2.9020 2.8310 1 20.7 15.91
Schaurteite P 62c 8.5250 10.8030 2 679.9 2.64
Thorbastnasite P 62c 6.9900 9.7100 2 410.9 4.12
Traskite P 6m2 17.9800 12.3300 3 3452.0 3.68
Wenkite P 62m 13.5110 7.4620 1 1179.7 3.26

(* - Mineral Name is Not IMA Approved)
(! - New Dana Classification Number Has Been Changed or Added)
(? - IMA Discredited Mineral Species Name
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