Trigonal - Trapezohedral Class (3 2) Mineral Species Listing
AXES
Synonyms: alpha-Quartz Type, Trapezohedral Tetartohedral, or Trigonal Holoaxial Class.
Space Groups in class: P3112, P312, P3121, P321, P3212, P3221, and R32.
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(* - Mineral Name is Not IMA Approved) (! - New Dana Classification Number Has Been Changed or Added) (? - IMA Discredited Mineral Species Name