Tetragonal System

Tetragonal System
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Tetragonal System - Unknown or Uncertain Class

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  • Home
  • Amorphous
  • Isometric
    • Diploidal
    • Gyroidal
    • Hexoctahedral
    • Hextetrahedral
    • Tetartoidal
  • Tetragonal
    • Dipyramidal
    • Disphenoidal
    • Ditetragonal
      Dipyramidal
    • Ditetragonal
      Pyramidal
    • Pyramidal
    • Scalenohedral
    • Trapezohedral
  • Orthorhombic
    • Dipyramidal
    • Disphenoidal
    • Pyramidal
  • Hexagonal
    • Dihexagonal
      Dipyramidal
    • Dihexagonal
      Pyramidal
    • Ditrigonal
      Dipyramidal
    • Dipyramidal
    • Pyramidal
    • Trapezohedral
    • Trigonal
      Dipyramidal
  • Trigonal
    • Ditrigonal
      Pyramidal
    • Hexagonal
      Scalenohedral
    • Pyramidal
    • Rhombohedral
    • Trapezohedral
  • Monoclinic
    • Domatic
    • Prismatic
    • Sphenoidal
  • Triclinic
    • Pedial
    • Pinacoidal
Axial Configuration Paper Model

Partial listing of all valid minerals that crystallize in the Tetragonal System. There is not enough known about them to permit assignment into a class.

System Class Name

AXES

 Planes Center
Hermann-
Maugin
Symbols
2-Fold 3-Fold 4-Fold 6-Fold
Tetragonal

 

 

 

 Disphenoidal 1 - - - - - -4
Pyramidal - - 1 - - - 4
Dipyramidal - - 1 - 1 yes 4/m
Scalenohedral 3 - - - 2 - 4 2m
Ditetragonal pyramidal - - - - 4 - 4mm
Trapezohedral 4 - 1 - - - 422
Ditetragonal-Dipyramidal 4 - 1 - 5 yes 4/m 2/m 2/m
22 Minerals From the H-M Class Tetragonal - Unknown or Uncertain
Mineral Space Grp a c Z Vol (Ang3) Calc Dens
Benleonardite Tetra 6.6030 12.7260 2 554.9 7.86
Cesplumtantite Unk 13.5520 6.4450 2 1183.7 6.96
Chadwickite Unk 11.0000 15.9600 14 1931.2 4.74
Chrombismite I 4I 4-I 4/m 8.6490 17.2400 2 1289.6 9.86
Cuprotungstite Unk 8.9300 14.4800 7 1154.7 7.25
Ecdemite Unk 10.8000 25.6200 8 2988.3 7.32
Grechishchevite P 42m-P 4m2P 4mmP 4/mmm 13.2250 8.6850 8 1519.0 7.15
Kamaishilite I-lattice 8.8500 8.7700 4 686.9 2.83
Koninckite Unk 11.9500 14.5200 16 2073.5 2.62
Lannonite Unk 6.8400 28.0100 1 1310.5 2.32
Mongolite Unk 7.0000 29.0100 2 1421.5 3.51
Oulankaite Unk 9.0440 4.9370 2 403.8 10.92
Pintadoite Tetra ?          
Przhevalskite Unk 7.2400 18.2200 2 955.1 3.51
Radhakrishnaite Unk 5.7100 3.7700 1 122.9 8.88
Sincosite P mmm or P 4/nmm 8.8950 12.7270 4 1007.0 2.99
Sinjarite Unk. 7.2100 5.8600 2 304.6 1.60
Sphaerobismoite P 42212 or P 41/n 8.0800 6.4600 4 421.8 7.09
Volfsonite P 42m-P 4212 10.7800 5.3900 1 626.4 4.60
Woodruffite Unk 8.4200 9.2800 2 657.9 3.37
Yecoraite Unk          
Zapatalite Unk 15.2200 11.5200 6 2668.6 3.02

(* - Mineral Name is Not IMA Approved)
(! - New Dana Classification Number Has Been Changed or Added)
(? - IMA Discredited Mineral Species Name

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