Trigonal - Trapezohedral Class (H-M Symbol (3 2))
LEGEND: Bold - (Valid Mineral Species) ! - Dana Number Added # - (Grandfathered as Valid} ? - (Discredited or otherwise Invalid Species) * - (Not Approved IMA) See Mouse Pointer Tool Tip on Mineral Name for more Information
| Mineral | Space Grp |
a | c | Z | Vol (Ang3) | Calc Dens |
Meas Dens |
| Abhurite | R32 | 10.018 | 44.03 | 21 | 3,826.85 | 4.35 | 4.3 |
| Alarsite ! | P3121,P3221 | 5.031 | 11.226 | 3 | 246.07 | 3.36 | 3.3 |
| Antarcticite | P321 | 7.89 | 3.95 | 1 | 212.95 | 1.71 | 1.7 |
| Berlinite # | P3121,P3221 | 4.92 | 10.91 | 3 | 228.71 | 2.66 | 2.6 |
| Calciohilairite | R32 | 20.87 | 16.002 | 24 | 6,036.01 | 2.73 | 2.7 |
| Caresite | P3112 or P3212 | 10.805 | 22.48 | 6 | 2,272.88 | 2.61 | 2.6 |
| Charmarite-3T | P3112 | 10.9885 | 22.63 | 6 | 2,366.42 | 2.49 | 2.5 |
| Cinnabar # | P3121,P3221 | 4.149 | 9.495 | 3 | 141.55 | 8.19 | 8.1 |
| Combeite # | P3221,P3121 | 10.48 | 13.188 | 6 | 1,254.39 | 2.81 | 2.8 |
| Franzinite | P321 | 12.91 | 26.543 | 1 | 3,831.19 | 2.52 | 2.5 |
| Godovikovite | P321 | 4.75 | 8.3 | 1 | 162.18 | 2.50 | 2.5 |
| Heazlewoodite # | R32 | 5.741 | 7.139 | 3 | 203.77 | 5.87 | 5.8 |
| Huntite # | R32 | 9.5027 | 7.8212 | 3 | 611.64 | 2.88 | 2.7 |
| Ingersonite | P3121 | 7.282 | 17.604 | 3 | 808.43 | 5.44 | |
| Joelbruggerite ! | P321 | 8.4803 | 5.2334 | 1 | 325.94 | 6.70 | |
| Komkovite | R32 | 10.526 | 15.736 | 6 | 1,509.91 | 3.37 | 3.3 |
| Malladrite # | P321 | 8.866 | 5.043 | 3 | 343.30 | 2.73 | 2.7 - 2.8 |
| Manganarsite | P312 ? | 11.451 | 7.252 | 4 | 823.52 | 3.60 | 3.6 |
| Monohydrocalcite | P3112 | 10.566 | 7.573 | 9 | 732.18 | 2.41 | 2.4 |
| Norsethite | R32 | 5.02 | 16.75 | 3 | 365.56 | 3.84 | 3.8 |
| Olekminskite | P321 | 8.66 | 6.08 | 3 | 394.88 | 3.61 | 3.7 |
| Paralstonite | P321 | 8.692 | 6.148 | 3 | 402.26 | 3.68 | 3.6 |
| Pseudorutile | P322 | 14.375 | 4.615 | 5 | 825.88 | 4.01 | 3.8 |
| Pyatenkoite-(Y) ! | R32 | 10.696 | 15.728 | 3 | 1,558.29 | 2.63 | 2.7 |
| Quartz # | P3121,P3221 | 4.9133 | 5.4053 | 3 | 113.00 | 2.65 | 2.6 - 2.7 |
| Quintinite-3T | P3112,P3212 | 10.571 | 22.71 | 6 | 2,197.76 | 2.21 | 2.1 |
| Rodolicoite ! | R3121 | 5.048 | 11.215 | 3 | 247.50 | 3.04 | 3.1 |
| Sabieite | P321 | 4.822 | 8.1696 | 1 | 164.51 | 2.68 | 2.7 |
| Sazykinaite-(Y) | R32 | 10.825 | 15.809 | 3 | 1,604.32 | 2.67 | 2.7 |
| Schuetteite | P3121 | 7.07 | 10.05 | 3 | 435.05 | 8.36 | 8.2 |
| Selenium # | P3121,P3221 | 4.366 | 4.954 | 3 | 81.78 | 4.81 | 4.8 |
| Sergeevite | R32 | 19.01 | 7.82 | 3 | 2,447.38 | 2.66 | 2.2 - 2.3 |
| Tellurium # | P3121 | 4.447 | 5.915 | 3 | 101.30 | 6.27 | 6.2 |
| Tincalconite # | R32 | 11.1402 | 21.207 | 3 | 2,279.27 | 1.87 | 1.9 |
| Ximengite | P3121 | 6.986 | 6.4753 | 3 | 273.68 | 5.53 | |
| Zirconolite-3T | P312 | 7.287 | 16.886 | 7 | 776.52 | 5.08 | 4.7 |