Mineralogy Database

Tetragonal - Trapezohedral Class

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Tetragonal - Trapezohedral Class (H-M Symbol (4 2 2))

Axial Diagram, Paper Model and KrystalShaper Form
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
23 Minerals From the H-M Class Tetragonal - Trapezohedral
Mineral Space
Grp
a c Z Vol (Ang3) Calc
Dens
Meas
Dens
Cristobalite # P41212 4.971 6.918 4 170.95 2.33 2.3
Cyrilovite # P412121,P432121 7.334 19.368 4 1,041.76 3.09 3.1
Ekanite I422 7.483 14.893 2 833.94 3.41 3.1
Formicaite ! P41212 6.77 9.463 4 433.72 1.99 1.9
Genkinite P41212 7.736 24.161 8 1,445.93 9.71 8.8
Kamphaugite-(Y) P41212 7.434 21.793 4 1,204.38 3.23 3.2
Lemanskiite ! P4122 or P4322 9.9758 36.714 8 3,653.65 3.86 3.8
Lipscombite # P41212 7.31 13.212 4 706.00 3.68 3.7
Mahnertite ! I4mmm 10.0371 23.739 8 2,391.55 3.14 3.1
Maucherite # P41212,P43212 6.868 21.8 4 1,028.29 8.04 7.8
Mellite # P4122,P4322 21.91 23.2 16 11,137.1 1.27 1.5 - 1.6
Millisite # P41212,P43212 7 19.07 2 934.43 2.90 2.8
Paratellurite P41212,P43212 4.81 7.613 4 176.14 6.02 5.6
Pottsite I4122 11.084 12.634 10 1,552.15 7.31 7.0
Retgersite # P41212,P43212 6.782 18.28 4 840.80 2.08 2.1
Saryarkite-(Y) P4212,P42212 8.213 6.55 1 441.82 3.48 3.1 - 3.2
Sweetite P41212,P43212 8.222 14.34 20 969.40 3.41 3.3
Ungavaite ! P41212, P4122, P43212 7.7388 24.145 8 1,446.02 7.26
Uytenbogaardtite P4122 9.75 9.85 8 936.37 8.29
Vinciennite P4122 10.697 10.697 2 1,224.01 4.31 4.3
Wardite # P41212 7.0587 19.062 4 949.77 2.78 2.8 - 2.9
Zdenekite P4122,P4322 10.066 39.39 8 3,991.17 4.09 4.1
Zinclipscombite ! P43212 or P41212 7.242 13.125 4 688.36 3.72 3.7