A variety of pyroxene mineral or a pyroxene-related silicate, part of the broader pyroxene mineral group.
Variant or related form of 'fassaite,' with '-alite' suffix instead of '-aite.' Mineralogical nomenclature often includes multiple names or variants for the same minerals discovered at different locations.
Mineralogy has naming variants—sometimes the same mineral discovered in different places gets different names, which geologists then have to untangle!
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