Tetragonal - Ditetragonal Dipyramidal Class (H-M Symbol (4/m 2/m 2/m))
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
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| Mineral | Space Grp |
a | c | Z | Vol (Ang3) | Calc Dens |
Meas Dens |
| Ordonezite # | P42/mnm | 4.652 | 9.23 | 2 | 199.75 | 6.73 | 6.6 |
| Paramelaconite # | I41/amd | 5.837 | 9.932 | 16 | 338.39 | 6.25 | 6.1 |
| Parkinsonite | I4/mmm | 3.992 | 22.514 | 1 | 358.78 | 7.85 | 7.3 |
| Pertlikite ! | I41/acd | 19.208 | 27.2158 | 8 | 10,041.2 | 2.56 | 2.6 |
| Philolithite ! | P42/nnm | 12.627 | 12.595 | 2 | 2,008.16 | 5.93 | 5.9 |
| Phosgenite # | P4/mbm | 8.112 | 8.814 | 4 | 580.00 | 6.24 | 6.0 - 6.3 |
| Plattnerite # | P4/mnm | 3.92 | 3.367 | 1 | 51.74 | 7.68 | 8.5 - 9.6 |
| Potarite # | P4/mmm | 3.02 | 3.706 | 1 | 33.80 | 15.08 | 14.9 |
| Pretulite ! | I41/amd | 6.589 | 5.806 | 4 | 252.07 | 3.69 | 3.7 |
| Pseudoboleite # | I4/mmm | 15.24 | 30.74 | 2 | 7,139.60 | 5.10 | 5.0 |
| Pyrolusite # | P4/mnm | 4.39 | 2.86 | 2 | 55.12 | 5.24 | 4.4 - 5.1 |
| Quadratite ! | I4/amd | 5.499 | 33.91 | 8 | 1,025.40 | 5.32 | |
| Roggianite | I4/mcm | 18.332 | 9.164 | 8 | 3,079.67 | 2.33 | 2.0 |
| Romarchite | P4/nmm | 3.802 | 4.836 | 2 | 69.91 | 6.40 | |
| Rorisite | P4/nmm | 3.89 | 6.81 | 2 | 103.05 | 2.92 | 2.8 |
| Rutile # | P4/mnm | 4.594 | 2.958 | 2 | 62.43 | 4.25 | 4.2 |
| Sabatierite | P4/mmm | 3.997 | 9.841 | 1 | 157.22 | 7.34 | |
| Sabugalite # | I4/mmm | 6.96 | 19.3 | 1 | 934.92 | 3.15 | 3.2 |
| Saleeite # | I4/mmm | 7.01 | 19.84 | 2 | 974.94 | 3.18 | 3.3 |
| Schafarzikite # | P42/mbc | 8.59 | 5.92 | 4 | 436.83 | 5.52 | 4.3 |
| Schiavinatoite ! | I41/amd | 6.219 | 5.487 | 4 | 212.21 | 6.57 | |
| Schwartzembergite # | I4/mmm | 5.61 | 12.54 | 1 | 394.66 | 7.50 | 7.4 |
| Selenojalpaite ! | I41/amd | 8.939 | 11.844 | 8 | 946.40 | 7.64 | |
| Sellaite # | P42/mnm | 4.66 | 3.078 | 2 | 66.84 | 3.10 | 3.0 - 3.2 |
| Selwynite | I41/amd | 6.57 | 17.142 | 2 | 739.93 | 3.02 | 2.9 |
| Sherwoodite # | I41/amd | 28.06 | 13.56 | 4 | 10,676.7 | 2.57 | 2.8 |
| Sitinakite | P42/mcm | 7.819 | 12.099 | 2 | 739.69 | 2.95 | 2.9 |
| Sodium-autunite # | P4/nmm | 6.976 | 8.99 | 1 | 437.49 | 3.49 | 3.6 |
| Sodium meta-autunite ! | P4/nmm | 6.996 | 8.64 | 1 | 422.88 | 3.54 | 3.6 |
| Squawcreekite ? | P4/mnm | 4.6673 | 3.1006 | 1 | 67.54 | 6.44 | |
| Steacyite | P4/mcc | 7.58 | 14.77 | 2 | 848.63 | 3.23 | 3.0 |
| Stishovite | P4/mnm | 4.179 | 2.6649 | 2 | 46.54 | 4.29 | 4.3 |
| Struverite ? | P4/mnm | 4.645 | 2.999 | 2 | 64.71 | 6.02 | 5.2 |
| Sugakiite ! | P42/mnm | 10.566 | 9.749 | 4 | 1,088.38 | 4.71 | |
| Tapiolite * | P42/mnm | 4.754 | 9.228 | 2 | 208.56 | 7.90 | 8.2 |
| Tapiolite-(Fe) # | P42/mnm | 4.75 | 9.25 | 2 | 208.70 | 7.96 | 7.8 |
| Tapiolite-(Mn) | P42/mnm | 4.762 | 9.272 | 2 | 210.26 | 7.62 | 7.7 |
| Teepleite # | P4/nmm | 7.26 | 4.85 | 2 | 255.63 | 2.08 | 2.1 |
| Tellurohauchecornite | P4/mmm | 14.64 | 10.87 | 8 | 2,329.76 | 6.39 | |
| Tetra-auricupride | P4/mmm | 3.96 | 3.67 | 2 | 57.55 | 15.03 | 15.0 |
| Tetraferroplatinum | P4/mmm | 3.84 | 3.72 | 2 | 54.85 | 15.19 | 14.3 |
| Tetrataenite | P4/mmm | 2.533 | 3.582 | 2 | 22.98 | 8.28 | 8.3 |
| Thalcusite | I4/mmm | 3.882 | 13.25 | 1 | 199.68 | 4.82 | 6.2 |
| Thorikosite | I4/mmm | 3.919 | 12.854 | 1 | 197.42 | 7.30 | 7.2 |
| Thorite # | I41/amd | 7.117 | 6.295 | 4 | 318.85 | 6.75 | 4.0 - 6.7 |
| Thorogummite # | I41/amd | 7.068 | 6.26 | 3 | 312.73 | 5.12 | 5.4 |
| Tin # | I41/amd | 5.831 | 3.182 | 4 | 108.19 | 7.29 | 7.3 |
| Torbernite # | I4/mmm | 7.06 | 20.54 | 2 | 1,023.79 | 3.22 | 3.2 |
| Trippkeite # | P42/mbc | 8.592 | 5.573 | 4 | 411.41 | 4.48 | 4.8 |
| Tripuhyite # | P42/mnm | 4.625 | 3.059 | 1 | 65.43 | 6.13 | 5.8 |
| Trogerite # | P4/mmm | 7.16 | 8.8 | 1 | 451.14 | 3.55 | 3.5 |
| Tschernichite | P4/mmm | 12.88 | 25.02 | 8 | 4,150.68 | 2.11 | 2.0 |
| Tucekite | P4/mmm | 7.174 | 5.402 | 1 | 278.02 | 6.14 | |
| Tulameenite | P4/mm | 3.902 | 3.585 | 1 | 54.58 | 15.50 | 14.9 |
| Tunisite | P4/nmm | 11.22 | 6.582 | 2 | 828.60 | 2.50 | 2.5 |
| Turkestanite ! | P4/mcc | 7.592 | 14.824 | 2 | 854.43 | 3.42 | 3.4 |
| Uramarsite ! | P4/mmm | 7.19 | 9.15 | 1 | 473.02 | 3.28 | 3.2 |
| Uramphite # | P4/nmm | 7.01 | 9.05 | 2 | 444.72 | 3.26 | 3.7 |
| Uranocircite # | P4/nnc | 7.01 | 20.46 | 2 | 1,005.41 | 3.58 | 3.5 |
| Urvantsevite | I4/mmm | 3.3628 | 12.902 | 2 | 145.90 | 11.92 | 9.7 |
| Varlamoffite * | P42/mnm | 4.71 | 3.13 | 1 | 69.44 | 3.24 | 2.5 - 2.6 |
| Wakefieldite-(Ce) | I41/amd | 7.354 | 6.488 | 4 | 350.88 | 5.34 | 4.8 |
| Wakefieldite-(Y) | I41/amd | 7.105 | 6.29 | 4 | 317.53 | 4.26 | 4.2 |
| Wesselsite ! | P4/ncc | 7.366 | 15.574 | 4 | 845.01 | 3.33 | 3.2 |
| Wiluite ! | P4/nnc | 15.752 | 11.717 | 2 | 2,907.29 | 3.34 | 3.4 |
| Xenotime-(Y) # | I41/amd | 6.89 | 6.03 | 4 | 286.26 | 4.27 | 4.4 - 5.1 |
| Xenotime-(Yb) ! | I41/amd | 6.866 | 6.004 | 2 | 283.04 | 3.14 | |
| Zavaritskite | P4/nmm | 3.747 | 6.226 | 2 | 87.41 | 9.27 | 7.9 - 9.0 |
| Zeunerite # | P4/nnc | 7.18 | 21.06 | 2 | 1,085.69 | 3.25 | 3.2 - 3.4 |
| Zircon # | I41/amd | 6.604 | 5.979 | 4 | 260.76 | 4.85 | 4.6 - 4.7 |