Trigonal Ditrigonal Pyramidal Class (original) (raw)
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Trigonal - Ditrigonal Pyramidal Class (3 m) Mineral Species Listing
| System | Class Name | AXES | Planes | Center | Hermann- Maugin Symbols | |||
|---|---|---|---|---|---|---|---|---|
| 2-Fold | 3-Fold | 4-Fold | 6-Fold | |||||
| Trigonal | Ditrigonal Pyramidal | - | 1 | - | - | 3 | - | 3m |
Synonyms: Rhombohedral-Hemimorphic Class, Tourmaline Type, Trigonal Hemihedral Hemimorphic. or Ditrigonal Polar Class.
Space Groups in class: P31c, P31m, P3c1, P3m1, R3c, and R3m.
| Example of the Trigonal - ditrigonal pyramidal class symmetry in stereo using JCrystal Applet by Steffen Weber. |
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| Java Applet Not Started |
| Example of the Trigonal - ditrigonal pyramidal class symmetry in stereo using Faces (version 3.5) by Georges Favreau. |
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112 Minerals From the H-M Class Trigonal - Ditrigonal Pyramidal (3 m)
| Mineral | Space Grp | a | c | Z | Vol (Ang3) | Calc Dens |
|---|---|---|---|---|---|---|
| Acetamide | R 3c | 11.4400 | 13.5000 | 18 | 1530.1 | 1.15 |
| Aerinite | P 3c1 | 16.8720 | 5.2256 | 1 | 1288.3 | 2.51 |
| Alloriite | P 31c | 12.8920 | 21.3400 | 1 | 3071.6 | 2.36 |
| Aluminocerite-(Ce) | R 3c | 10.5810 | 37.9320 | 6 | 3677.8 | 4.67 |
| Ammoniojarosite | R 3m | 7.2000 | 17.0000 | 3 | 763.2 | 3.13 |
| Aqualite | R 3m | 14.0780 | 31.2400 | 3 | 5362.0 | 2.61 |
| Argentojarosite | R 3m | 7.3500 | 16.5800 | 3 | 775.7 | 3.66 |
| Arsenocrandallite | R 3m | 7.0800 | 17.2700 | 3 | 749.7 | 3.96 |
| Arsenoflorencite-(La) | R 3m | 7.0000 | 16.6800 | 3 | 707.8 | 3.97 |
| Arsenoflorencite-(Nd) | R 3m | 7.0300 | 16.5500 | 3 | 708.3 | 4.30 |
| Asbecasite | P 3c | 8.3600 | 15.3000 | 2 | 926.1 | 3.79 |
| Beaverite | R 3m | 7.2030 | 16.9400 | 3 | 761.2 | 4.33 |
| Belendorffite | R 3m | 13.3600 | 16.1610 | 12 | 2498.1 | 13.15 |
| Bobdownsite | R 3c | 10.3224 | 37.0700 | 6 | 3420.7 | 3.07 |
| Buergerite | R 3m | 15.8740 | 7.1960 | 3 | 1570.3 | 3.34 |
| Buryatite | P 31c | 11.1400 | 20.9900 | 4 | 2255.9 | 2.15 |
| Bystrite | P 31c | 12.8550 | 10.7000 | 2 | 1531.3 | 2.40 |
| Carbokentbrooksite | R 3m | 14.2390 | 30.0390 | 3 | 5274.4 | 2.95 |
| Cerite-(Ce) | R 3c | 10.7790 | 38.0610 | 6 | 3829.7 | 5.24 |
| Cerite-(La) | R 3c | 10.7493 | 38.3180 | 6 | 3834.4 | 4.74 |
| Changbaiite | R 3m | 10.4990 | 11.5530 | 9 | 1102.9 | 6.63 |
| Charlesite | P 31c | 11.1600 | 21.2100 | 2 | 2287.7 | 1.79 |
| Chlorartinite | R 3c (?) | 23.1630 | 7.2210 | 18 | 3355.2 | 1.92 |
| Chromdravite | R 3m | 16.1100 | 7.2700 | 3 | 1634.0 | 3.40 |
| Chvilevaite | P 3m | 3.8730 | 6.8480 | 1 | 89.0 | 3.92 |
| Congolite | R 3c | 8.6225 | 21.0540 | 6 | 1355.6 | 3.37 |
| Corkite | R 3m | 7.2200 | 16.6600 | 3 | 752.1 | 4.42 |
| Cronstedtite | P 31m | 5.4860 | 7.0950 | 1 | 184.9 | 3.59 |
| Dravite | R 3m | 15.9410 | 7.2010 | 3 | 1584.7 | 3.01 |
| Dualite | R 3m | 14.1530 | 60.7200 | 3 | 10533.2 | 2.82 |
| Dukeite | P 31c | 15.0670 | 15.2930 | 2 | 3006.6 | 7.18 |
| Dussertite | R 3m | 7.4244 | 17.4940 | 3 | 835.1 | 3.98 |
| Elbaite | R 3m | 15.8380 | 7.1030 | 3 | 1543.0 | 2.96 |
| Ellisite | R 3m | 12.3240 | 9.6470 | 7 | 1268.9 | 7.18 |
| Feklichevite | R 3m | 14.2550 | 30.1700 | 3 | 5309.3 | 2.85 |
| Fencooperite | P 3m1 | 10.7270 | 7.0850 | 1 | 706.0 | 4.24 |
| Ferrokentbrooksite | R 3m | 14.2277 | 29.9870 | 3 | 5256.9 | 3.06 |
| Ferromerrillite | R 3c | 10.3720 | 37.2170 | 6 | 3467.4 | 3.15 |
| Feruvite | R 3m | 16.0120 | 7.2450 | 3 | 1608.7 | 3.24 |
| Foitite | R 3m | 15.9670 | 7.1260 | 3 | 1573.3 | 3.27 |
| Galeite | P 3m | 12.1970 | 13.9550 | 3 | 1797.9 | 2.60 |
| Gallobeudantite | R 3m | 7.2250 | 17.0300 | 3 | 769.9 | 4.65 |
| Georgbarsanovite | R 3m | 14.2740 | 30.0200 | 3 | 5297.0 | 3.10 |
| Giuseppettite | P 31c | 12.8560 | 42.2560 | 1 | 6048.3 | 2.38 |
| Golyshevite | R 3m | 14.2310 | 29.9840 | 3 | 5258.9 | 2.77 |
| Gratonite | R 3m | 17.7010 | 7.7920 | 3 | 2114.3 | 6.23 |
| Grattarolaite | R 3m | 7.9940 | 6.8550 | 4 | 379.4 | 5.44 |
| Hatrurite | R 3m | 7.1500 | 25.5600 | 9 | 1131.6 | 3.02 |
| Holtedahlite | P 31m | 11.2030 | 4.9770 | 1 | 541.0 | 2.93 |
| Hundholmenite-(Y) | R 3m | 10.6750 | 27.0200 | 3 | 2666.6 | 4.71 |
| Hydrocerussite | P 31m | 5.2400 | 23.7400 | 3 | 564.5 | 6.84 |
| Hydroniumjarosite | R 3m | 7.3559 | 17.0090 | 3 | 797.0 | 3.00 |
| Hydroxyuvite | R 3m | 15.9540 | 7.2140 | 3 | 1590.2 | 3.05 |
| Ikranite | R 3m | 14.1670 | 30.0810 | 3 | 5228.5 | 2.63 |
| IMA2007-041T | R 3m | 10.9400 | 13.9700 | 1448.0 | ||
| IMA2008-029 | R 3c | 15.2171 | 8.9323 | 1791.3 | ||
| Iquiqueite | P 31c | 11.6369 | 30.1580 | 3 | 3536.8 | 2.06 |
| Johnsenite-(Ce) | R 3m | 14.2370 | 30.0300 | 3 | 5271.4 | 3.19 |
| Kalsilite | P 31c | 5.1570 | 8.7060 | 2 | 200.5 | 2.62 |
| Kentbrooksite | R 3m | 14.1680 | 30.0847 | 3 | 5229.9 | 3.72 |
| Khomyakovite | R 3m | 14.2959 | 30.0840 | 3 | 5324.6 | 3.13 |
| Krivovichevite | R 3c | 7.7420 | 32.0820 | 6 | 1665.3 | 5.22 |
| Labyrinthite | R 3m | 14.2390 | 60.7330 | 3 | 10663.9 | 2.85 |
| Liddicoatite | R 3m | 15.8750 | 7.1260 | 3 | 1555.3 | 2.94 |
| Lusungite | R 3m | 7.0400 | 16.8000 | 3 | 721.1 | 3.99 |
| Magnesiofoitite | R 3m | 15.8840 | 7.1780 | 3 | 1568.4 | 2.98 |
| Makinenite | R 3m | 10.0100 | 3.2800 | 9 | 284.6 | 7.23 |
| Manganokhomyakovite | R 3m | 14.2820 | 30.1200 | 3 | 5320.6 | 3.13 |
| Matraite | R 3m | 3.8000 | 9.4000 | 3 | 117.6 | 4.13 |
| Merenskyite | P 3m1 | 3.9780 | 5.1250 | 1 | 70.2 | 9.14 |
| Merrillite | R 3c | 10.3620 | 37.1060 | 3 | 3450.3 | 3.10 |
| Merrillite-(Ca) | R 3c | 10.3620 | 37.1060 | 3 | 3450.3 | 3.03 |
| Merrillite-(Y) | R 3c | 10.3620 | 37.1060 | 3 | 3450.3 | 3.29 |
| Mertieite-II | R 3c | 7.6010 | 42.9040 | 12 | 2146.7 | 11.25 |
| Mogovidite | R 3m | 14.2320 | 30.2100 | 3 | 5299.2 | 2.88 |
| Natrojarosite | R 3m | 7.1800 | 16.3000 | 3 | 727.7 | 3.32 |
| Nierite | P 31c | 7.7400 | 5.6100 | 4 | 291.1 | 3.20 |
| Okanoganite-(Y) | R 3m | 10.7108 | 27.0398 | 3 | 2686.5 | 4.93 |
| Olenite | R 3m | 15.8020 | 7.0860 | 3 | 1532.3 | 3.13 |
| Osarizawaite | R 3m | 7.0500 | 17.2500 | 3 | 742.5 | 4.15 |
| Perryite | R 3c | 6.6400 | 37.9820 | 12 | 1450.3 | 7.56 |
| Pezzottaite | R 3c | 15.9460 | 27.8030 | 18 | 6122.5 | 3.22 |
| Povondraite | R 3m | 16.1860 | 7.4440 | 3 | 1689.0 | 3.41 |
| Proshchenkoite-(Y) | R 3m | 10.7527 | 27.4002 | 3 | 2743.6 | 4.92 |
| Pyrargyrite | R 3c | 11.0470 | 8.7190 | 6 | 921.5 | 5.86 |
| Raslakite | R 3m | 14.2290 | 30.0190 | 3 | 5263.5 | 2.63 |
| Rastsvetaevite | R 3m | 14.2490 | 60.9690 | 3 | 10720.3 | 2.82 |
| Rossmanite | R 3m | 15.7700 | 7.0850 | 3 | 1525.9 | 3.02 |
| Satterlyite | P 31m | 11.3550 | 5.0394 | 6 | 562.7 | 3.68 |
| Schairerite | P 31m | 12.1700 | 19.2900 | 3 | 2474.3 | 2.63 |
| Schallerite | P 3m1 ? | 13.4000 | 14.2800 | 2 | 2220.6 | 3.45 |
| Schollhornite | R 3m ? | 3.3200 | 26.6000 | 3 | 253.9 | 2.77 |
| Schorl | R 3m | 15.9900 | 7.1950 | 3 | 1593.2 | 3.29 |
| Schorl-(F) | R 3m | 15.9970 | 7.1790 | 3 | 1591.0 | 3.22 |
| Selenopolybasite | P 3m1 | 7.5950 | 12.0731 | 1 | 603.1 | 6.55 |
| Shafranovskite | P 31c | 14.5190 | 21.0620 | 6 | 3845.1 | 2.72 |
| Spangolite | P 31c | 8.2540 | 14.3540 | 2 | 846.9 | 3.13 |
| Spionkopite | P 3m1 ? | 22.9620 | 41.4290 | 504 | 18917.1 | 5.35 |
| Strontiowhitlockite | R 3c | 10.6440 | 39.5400 | 6 | 3879.5 | 3.57 |
| Sturmanite | P 31c | 11.1600 | 21.7900 | 2 | 2350.3 | 1.79 |
| Taseqite | R 3m | 14.2860 | 29.9900 | 3 | 5300.6 | 3.20 |
| Trembathite | R 3c | 8.5740 | 20.9900 | 6 | 1336.3 | 3.10 |
| Tuite | R 3m | 5.2580 | 18.7270 | 3 | 448.4 | 3.41 |
| Uvite | R 3m | 15.9730 | 7.2310 | 3 | 1597.7 | 3.02 |
| Vanadiumdravite | R 3m | 16.1200 | 7.3900 | 3 | 1663.1 | 3.32 |
| Vicanite-(Ce) | R 3m | 10.7950 | 27.3360 | 3 | 2758.7 | 4.61 |
| Whitlockite | R 3c | 10.3300 | 37.1030 | 6 | 3428.8 | 3.11 |
| Wickenburgite | P 31c | 8.5550 | 20.1900 | 2 | 1279.7 | 3.89 |
| Yarrowite | P 3m1 ? | 3.8000 | 67.2600 | 3 | 841.1 | 4.91 |
| Yushkinite | P 3m1 | 3.2100 | 11.3000 | 2 | 100.8 | 2.88 |
| Zakharovite | P 31mP 3m1 | 14.5800 | 37.7100 | 9 | 6942.3 | 2.67 |
| Zirsilite-(Ce) | R 3m | 14.2480 | 30.0760 | 3 | 5287.6 | 3.12 |
(* - Mineral Name is Not IMA Approved)
(! - New Dana Classification Number Has Been Changed or Added)
(? - IMA Discredited Mineral Species Name