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Hexagonal Dipyramidal Class

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Axial Configuration	Paper Model

Hexagonal - Dipyramidal Class (6/m) Mineral Species Listing

System	Class Name	AXES				Planes	Center	Hermann- Maugin Symbols
		2-Fold	3-Fold	4-Fold	6-Fold
Hexagonal	Dipyramidal	-	-	-	1	1	yes	6/m

Synonyms: Tripyramidal Class, Apatite Type, Pyramidal Hemihedral, or Hexagonal Equatorial Class.

Space Groups in class: P6/m, P6/m, and P6₃/m.

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

Java Applet Not Started

Example of the Hexagonal - Dipyramidal class symmetry in stereo using Faces (version 3.5) by Georges Favreau.

**62 Minerals From the H-M Class Hexagonal - Dipyramidal (6/m)**
Mineral	Space Grp	a	c	Z	Vol (Ang3)	Calc Dens
Agardite-(Ca)	Unk
Agardite-(Ce)	P 6₃/m	13.5900	5.8900	2	942.1	3.78
Agardite-(Dy)	Unk
Agardite-(La)	P 6₃/m	13.6050	5.9170	2	948.5	3.74
Agardite-(Nd)	Unk
Agardite-(Y)	P 6₃/m	13.5500	5.8700	2	933.4	3.67
Aiolosite	P 6₃/m	9.6260	6.8800	2	552.1	3.76
Alforsite	P 6₃/m	10.2500	7.6400	2	695.1	4.81
Apatite	P 6₃/m	9.3800	6.8900	2	525.0	3.22
Apatite-(CaCl)	P 6₃/m	9.5980	6.7760	2	540.6	3.20
Apatite-(CaF)	P 6₃/m	9.3670	6.8840	2	523.1	3.20
Apatite-(CaOH)	P 6₃/m	9.4180	6.8750	2	528.1	3.16
Apatite-(SrOH)	P 6₃/m	9.5650	7.1150	2	563.7	3.74
Britholite-(Ce)	P 6₃/m	9.6300	7.0300	2	564.6	4.49
Britholite-(Y)	P 6₃/m	9.4300	6.8100	2	524.5	4.07
Calciopetersite	P 6₃/m	13.2840	5.9020	2	902.0	3.34
Carbonate-fluorapatite	P 6₃/m	9.3460	6.8870	2	521.0	3.10
Carbonate-hydroxylapatite	P 6₃/m	9.4190	6.8860	2	529.1	3.04
Davyne	P 6₃/m	12.7050	5.3680	1	750.4	2.40
Ellestadite	P 6₃/m
Ellestadite-(Cl)	P 6₃/m	9.5100	6.8970	2	540.2	3.15
Ellestadite-(F)	P 6₃/m	9.4850	6.9160	2	538.8	3.10
Ellestadite-(OH)	P 6₃/m	9.4910	6.9210	2	539.9	3.11
Fermorite	P 6₃/m	9.5500	6.9800	2	551.3	4.26
Fluoborite	P 6₃/m	8.9240	3.1150	2	214.8	2.88
Fluorbritholite-(Ce)	P 6₃/m	9.5170	6.9830	2	547.7	4.67
Fluorcalciobritholite	P 6₃/m	9.5800	6.9850	2	555.2	4.25
Hanksite	P 6₃/m	10.4700	21.2000	2	2012.6	2.58
Hedyphane	P 6₃/m	10.1400	7.1850	2	639.8	5.99
Hydroxylborite	P 6₃/m	8.9120	3.1120	2	214.1	2.87
Hydroxylpyromorphite	P 6₃/m
IMA2008-068	P 6₃/m	9.6400	7.0120	2	564.3	5.92
IMA2009-015	P 6₃/m	6.2070	3.8010	1	126.8	4.78
Inaglyite	P 6/m	7.0300	16.4400	1	703.6	5.79
Irtyshite	P 6₃/m	6.2310	36.7700	6	1236.4	7.27
Jeremejevite	P 6₃/m	8.5591	8.1814	2	519.1	3.28
Jouravskite	P 6₃/m	11.0600	10.5000	2	1112.3	1.99
Keystoneite	P 6₃/m	9.3440	7.6070	2	575.2	4.24
Kinichilite	P 6₃/m	9.4190	7.6650	2	588.9	4.12
Konderite	P 6/m	7.0240	16.4800	1	704.1	4.73
Mattheddleite	P 6₃/m	9.9630	7.4640	1	641.6	6.88
Mimetite	P 6₃/m	10.4600	7.4400	2	705.0	7.01
Mineevite-(Y)	P 6₃/m	8.8110	37.0300	2	2489.6	2.82
Mixite	P 6₃/m	13.6300	5.9000	2	949.2	4.07
Nasonite	P 6₃/m	10.0800	13.2700	2	1167.7	5.64
Painite	P 6₃/m	8.7240	8.4640	2	557.9	3.49
Petersite-(Y)	P 6₃/m	13.2880	5.8770	2	898.7	3.43
Phosphohedyphane	P 6₃/m	9.8570	7.1300	2	599.9	5.91
Plumboagardite	P 6₃/m	13.7700	5.9400	2	975.4	3.74
Polkanovite	P 6₃m	9.3100	3.6400	1	273.2	10.69
Pyromorphite	P 6₃/m	10.0000	7.3300	2	634.8	7.10
Quadridavyne	P 6₃/m	25.7710	5.3710	4	3089.2	2.37
Svabite	P 6₃/m	9.7500	6.9200	2	569.7	3.71
Thaumasite	P 6₃/m	11.0300	10.4000	2	1095.8	1.89
Tienshanite	P 6/m	16.7720	10.4350	6	2542.1	3.12
Tritomite-(Ce)	P 6₃/m	9.3500	6.8800	2	520.9	5.02
Tritomite-(Y)	P 6₃/m	9.3200	6.8400	2	514.5	4.48
Turneaureite	P 6₃/m	9.8100	6.8680	2	572.4	3.66
Vanadinite	P 6₃/m	10.3310	7.3430	2	678.7	6.93
Wadeite	P 6₃/m	6.8930	10.1720	2	418.6	3.16
Zalesiite	P 6₃/m	13.5710	5.8800	2	937.9	3.56
Zemannite	P 6₃/m	9.4100	7.6400	2	585.9	4.20

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

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