Item talk:Q162791
From geokb
Mindat Short Description
A subgroup name for monoclinic Pyroxene Group minerals. Compare Orthopyroxene Subgroup.
The most widespread members include aegirine, augite, hedenbergite and diopside.
Compare UM2004-50-SiO:AlFeGd.
Note: the so-called "Ca-Tschermak molecule...