Hexagonal - Trapezohedral Class (6 2 2) Mineral Species Listing
AXES
Synonyms: beta-Quartz Type, Trapezohedral Hemihedral, or Hexagonal Holoaxial Class.
Space Groups in class: P622, P6122, P6222, P6322, P6422, P6522.
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(* - Mineral Name is Not IMA Approved) (! - New Dana Classification Number Has Been Changed or Added) (? - IMA Discredited Mineral Species Name