Orthorhombic - Dipyramidal Class (H-M Symbol (2/m 2/m 2/m))
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| Mineral | Space Grp |
a | b | c | Z | Vol (Ang3) | Calc Dens |
Meas Dens |
| Aeschynite-(Ce) # | Pmnb | 7.55 | 10.97 | 5.42 | 4 | 448.90 | 4.52 | 5.2 |
| Aeschynite-(Nd) | Pmnb ? | 4 | 4.6 - 5.0 | |||||
| Aeschynite-(Y) | Pbnm | 5.18 | 10.98 | 7.41 | 4 | 421.45 | 4.33 | 4.8 - 5.1 |
| Agrinierite | Cmmm | 14.04 | 24.07 | 14.13 | 16 | 4,775.13 | 5.56 | 5.6 - 5.7 |
| Aikinite # | Pbnm | 11.297 | 11.654 | 4.061 | 4 | 534.65 | 7.15 | 6.1 - 6.8 |
| Aksaite | Pbca | 12.54 | 24.35 | 7.484 | 8 | 2,285.23 | 1.97 | 2.0 |
| Allabogdanite ! | Pnma | 5.748 | 3.548 | 6.661 | 4 | 135.84 | 7.10 | |
| Alumotantite | Pbcn | 4.473 | 11.308 | 4.775 | 4 | 241.52 | 7.48 | |
| Ancylite-(Ce) # | Pmcn | 5.03 | 8.53 | 7.29 | 2 | 312.78 | 4.06 | 3.9 |
| Ancylite-(La) ! | Pmcn | 5.072 | 8.589 | 7.276 | 2 | 316.97 | 4.00 | 3.9 |
| Andalusite # | Pnnm | 7.79 | 7.9 | 5.56 | 4 | 342.17 | 3.15 | 3.1 - 3.2 |
| Andorite # | Pmma | 13.01 | 19.19 | 4.27 | 4 | 1,066.06 | 5.44 | 5.4 |
| Andreyivanovite ! | Pnma | 5.833 | 3.569 | 6.658 | 4 | 138.61 | 6.65 | |
| Anduoite | Pnnm | 5.41 | 6.206 | 3.01 | 2 | 101.06 | 8.98 | |
| Anglesite # | Pbnm | 8.48 | 5.398 | 6.958 | 4 | 318.50 | 6.32 | 6.3 |
| Anhydrite # | Amma | 6.991 | 6.996 | 6.238 | 4 | 305.09 | 2.96 | 3.0 |
| Anilite | Pnma | 7.89 | 7.84 | 11.01 | 4 | 681.05 | 5.59 | 5.7 |
| Anthophyllite # | Pnma | 18.554 | 18.026 | 5.28 | 5 | 1,765.92 | 3.67 | 2.8 - 3.6 |
| Antimonselite | Pbnm | 11.213 | 11.515 | 3.991 | 4 | 515.31 | 6.19 | 5.9 |
| Antlerite # | Pnam | 8.24 | 11.99 | 6.03 | 4 | 595.75 | 3.95 | 3.9 |
| Apophyllite-(NaF) | Pnnm | 8.875 | 8.881 | 15.79 | 2 | 1,244.55 | 2.38 | 2.3 - 2.4 |
| Aragonite # | Pmcn | 4.959 | 7.968 | 5.741 | 4 | 226.85 | 2.93 | 2.9 |
| Arcanite # | Pmcn | 5.76 | 10.05 | 7.46 | 4 | 431.84 | 2.68 | 2.7 |
| Ardennite-(As) # | Pnmm | 8.72 | 18.56 | 5.83 | 2 | 943.55 | 3.65 | 3.6 - 3.8 |
| Ardennite-(V) ! | Pnmm | 8.76 | 5.838 | 18.56 | 2 | 949.17 | 3.55 | |
| Argentopyrite # | Pmmn | 6.64 | 11.47 | 6.45 | 4 | 491.24 | 4.27 | 4.2 |
| Armalcolite | Bbmm | 9.77 | 9.983 | 3.739 | 4 | 364.68 | 3.79 | 4.0 |
| Arsenolamprite # | Bmab | 3.63 | 4.45 | 10.96 | 8 | 177.04 | 5.62 | 5.3 - 5.6 |
| Arsenuranylite # | Bmmb | 15.4 | 17.4 | 13.768 | 6 | 3,689.27 | 4.25 | 4.2 |
| Ashanite ? | Pcan | 5.869 | 4.873 | 5.216 | 1 | 149.18 | 6.39 | 6.6 |
| Atacamite # | Pmcn | 6.84 | 9.13 | 6.01 | 4 | 375.32 | 3.78 | 3.8 |
| Avogadrite # | Pnma | 8.664 | 5.48 | 7.028 | 4 | 333.68 | 2.97 | 2.6 |
| Azoproite | Pbam | 9.26 | 12.25 | 3.01 | 4 | 341.44 | 3.63 | 3.6 |
| Balipholite | Ccca | 13.6 | 20.24 | 5.16 | 4 | 1,420.36 | 3.36 | 3.3 |
| Balyakinite | Pmcn | 7.6 | 5.83 | 12.69 | 8 | 562.27 | 5.65 | 5.6 |
| Barberiite | Pnma | 9.0615 | 5.6727 | 7.2672 | 4 | 373.56 | 1.86 | 1.9 |
| Barite # | Pbnm | 8.878 | 5.45 | 7.152 | 4 | 346.05 | 4.48 | 4.5 |
| Barrerite | Amma or Ammm | 13.643 | 18.2 | 17.842 | 2 | 4,430.21 | 2.01 | 2.1 |
| Bederite ! | Pcab | 12.559 | 12.834 | 11.714 | 4 | 1,888.09 | 3.47 | 3.5 |
| Benyacarite | Pbca | 10.561 | 20.585 | 12.516 | 4 | 2,720.96 | 2.34 | 2.4 |
| Bernalite | Pmmn | 7.6191 | 7.6191 | 7.5534 | 8 | 438.48 | 3.28 | 3.3 |
| Berthierite # | Pnam | 11.44 | 14.12 | 3.76 | 4 | 607.36 | 4.68 | 4.0 - 4.6 |
| Betekhtinite # | Immm | 14.693 | 22.72 | 3.861 | 5 | 1,288.90 | 5.95 | 6.0 - 6.1 |
| Beyerite # | Immm | 3.7729 | 3.7742 | 21.726 | 2 | 309.37 | 7.00 | 6.6 |
| Bezsmertnovite | Pmmn | 24.215 | 4.025 | 16.245 | 16 | 1,583.33 | 16.83 | 16.3 |
| Bigcreekite ! | Pnma | 5.038 | 9.024 | 18.321 | 4 | 832.93 | 2.76 | 2.7 |
| Birchite ! | Pnma | 10.489 | 20.901 | 6.155 | 4 | 1,349.36 | 3.65 | 3.6 |
| Bismuthinite # | Pbnm | 11.13 | 11.27 | 3.97 | 4 | 497.98 | 6.86 | 6.8 - 7.2 |
| Bismutocolumbite | Pcnn | 4.992 | 11.731 | 5.677 | 3 | 332.45 | 5.81 | 7.6 |
| Bismutotantalite # | Pcmn | 5.633 | 11.763 | 4.957 | 4 | 328.46 | 8.82 | 8.5 - 8.8 |
| Blatterite | Pnnm | 37.654 | 12.615 | 6.2472 | 2 | 2,967.45 | 4.26 | 4.7 |
| Boehmite # | Amam | 2.868 | 12.227 | 3.7 | 4 | 129.75 | 3.07 | 3.0 - 3.1 |
| Boggsite | Imma | 20.236 | 23.798 | 12.798 | 4 | 6,163.21 | 1.99 | 2.0 |
| Bonaccordite | Pbam | 9.213 | 12.229 | 3.001 | 4 | 338.11 | 5.19 | 5.2 |
| Bornite # | Pbca | 10.95 | 21.862 | 10.95 | 16 | 2,621.31 | 5.09 | 4.9 - 5.3 |
| Bournonite # | Pn21m | 8.16 | 8.7 | 7.8 | 2 | 553.74 | 2.93 | 5.7 - 5.9 |
| Bowieite | Pnca | 8.473 | 6.002 | 6.121 | 4 | 311.28 | 7.30 | |
| Bracewellite | Pbnm | 4.492 | 9.86 | 2.974 | 4 | 131.72 | 4.29 | 4.4 - 4.5 |
| Brassite | Pbca | 7.472 | 10.891 | 16.585 | 8 | 1,349.65 | 2.33 | 2.3 |
| Brenkite | Pbcn | 7.65 | 7.55 | 6.548 | 4 | 378.20 | 3.13 | 3.1 |
| Brookite # | Pcab | 5.456 | 9.182 | 5.143 | 8 | 257.65 | 4.12 | 4.1 |
| Brownmillerite | Ibmm | 5.52 | 14.44 | 5.34 | 4 | 425.64 | 3.75 | 3.8 |
| Buckhornite | Pmmm | 4.108 | 12.308 | 9.331 | 2 | 471.79 | 8.25 | |
| Burkeite # | Pmmm | 21.15 | 27.63 | 5.16 | 12 | 3,015.37 | 2.58 | 2.6 |
| Bursaite ? | Bbmm | 4.118 | 13.376 | 20.508 | 2 | 1,129.63 | 6.40 | 6.2 |
| Cabriite | Pmmm | 7.88 | 7.88 | 3.94 | 4 | 244.65 | 10.73 | 10.7 |
| Calciborite # | Pccn | 8.38 | 13.81 | 5 | 8 | 578.64 | 2.89 | 2.9 |
| Calcioancylite-(Ce) # | Pmmm | 7.24 | 8.49 | 5.02 | 2 | 308.57 | 3.61 | |
| Calcioandyrobertsite-2O ! | Pnma | 19.647 | 10.087 | 9.963 | 4 | 1,974.46 | 3.80 | 3.9 |
| Calciocatapleiite | Pbnn | 7.378 | 12.779 | 10.096 | 4 | 951.89 | 2.73 | 2.8 |
| Calzirtite | Pbca | 15.094 | 15.094 | 10.043 | 14 | 2,288.08 | 5.14 | 5.0 |
| Carminite # | Cccm | 16.591 | 7.58 | 12.285 | 8 | 1,544.96 | 5.50 | 5.0 - 5.2 |
| Carnallite # | Pcna | 9.56 | 16.05 | 22.56 | 12 | 3,461.56 | 1.60 | 1.6 |
| Carpholite # | Ccca | 13.86 | 20.13 | 5.12 | 8 | 1,428.49 | 3.06 | 2.9 |
| Cassagnaite ! | Cmcm | 6.066 | 8.908 | 18.995 | 2 | 1,026.41 | 3.22 | |
| Catalanoite ! | Ibca | 11.488 | 11.647 | 16.435 | 8 | 2,199.02 | 1.74 | |
| Cavansite | Pcmn | 9.778 | 13.678 | 9.601 | 4 | 1,284.07 | 2.33 | 2.2 - 2.3 |
| Cavoite ! | Pnam | 10.42 | 5.28 | 10.34 | 4 | 568.88 | 3.50 | |
| Cechite | Pnam | 7.607 | 9.441 | 6.096 | 4 | 437.80 | 5.99 | 5.9 |
| Celestine # | Pbnm | 8.359 | 5.352 | 6.866 | 4 | 307.17 | 3.97 | 3.9 - 4.0 |
| Cerussite # | Pmcn | 5.195 | 8.436 | 6.152 | 4 | 269.61 | 6.58 | 6.6 |
| Cesbronite | Pbcn | 8.624 | 11.878 | 5.872 | 2 | 601.50 | 4.46 | 4.4 |
| Cesbronite-x | Pbcn | 8.624 | 11.878 | 5.872 | 2 | 601.50 | 4.46 | 4.4 |
| Chalcocyanite # | Pmnb | 6.69 | 8.39 | 4.82 | 4 | 270.54 | 3.92 | 3.7 |
| Chalcostibite # | Pnam | 6.0211 | 14.509 | 3.7992 | 4 | 331.90 | 4.99 | 4.8 - 5.0 |
| Chegemite ! | Pbnm | 5.0696 | 11.3955 | 23.5571 | 4 | 1,360.91 | 2.88 | |
| Chelkarite | Pbca | 13.69 | 20.84 | 8.26 | 12 | 2,356.57 | 2.93 | |
| Cherepanovite | Pnma | 5.7 | 3.59 | 6 | 4 | 122.78 | 9.62 | 9.7 |
| Chesnokovite ! | Ibca | 11.7119 | 16.973 | 11.5652 | 8 | 2,299.00 | 1.60 | 1.7 |
| Chestermanite | Pbam | 18.525 | 12.272 | 3.0218 | 8 | 686.97 | 3.73 | 3.7 |
| Chiavennite | Pnab | 8.729 | 31.326 | 4.903 | 4 | 1,340.70 | 2.63 | 2.6 |
| Chivruaiite ! | Cmmm | 7.17 | 22.98 | 6.94 | 1 | 1,143.48 | 2.30 | 2.4 |
| Chlorothionite # | Pnma | 7.73 | 6.078 | 16.292 | 4 | 765.45 | 2.68 | 2.7 |
| Chrysoberyl # | Pmnb | 5.476 | 9.404 | 4.427 | 4 | 227.97 | 3.70 | 3.5 - 3.8 |
| Clerite ! | Pnam | 11.47 | 14.36 | 3.81 | 4 | 627.54 | 4.52 | 4.9 - 4.4 |
| Clinobarylite ! | Pmn2 | 11.65 | 4.922 | 4.674 | 2 | 268.01 | 4.06 | 4.0 |
| Cohenite # | Pbnm | 4.518 | 5.069 | 6.736 | 4 | 154.27 | 7.88 | 7.2 - 7.7 |
| Colimaite | Pnma | 9.138 | 10.627 | 9.131 | 4 | 886.71 | 2.22 | |
| Columbite-(Fe) # | Pcan | 5.746 | 14.308 | 5.075 | 4 | 417.23 | 5.37 | 5.3 - 7.3 |
| Columbite-(Mg) | Pcan | 5.02 | 14.17 | 5.65 | 4 | 401.90 | 5.46 | 5.0 |