Mindat Short Description
Pyroxene Group, Clinopyroxene Subgroup.
A high-temperature mineral, forming mostly above 900°C, and with slow cooling tends to invert to a mixture of augite and orthopyroxene. Thus it is mostly restricted to volcanic and subvolcanic rocks like basa...
Geoscience Ontology Status Notes
Winchell A N (1900) Mineralogical and petrographic study of the gabbroid rocks of Minnesota, and more particularly, of the pagioclasytes, The American Geologist 26, 197-245
IMA Formula (from Mindat)
(Mg,Fe,Ca)2Si2O6
RRUFF Formula (from Geoscience Ontology)
(Mg,Fe2+,Ca)SiO3