pyroxene
Pyroxene
Any one of a group of minerals, silicates of calcium, iron, and magnesium with a general formula X,YSi2O6, found in igneous and metamorphic rocks. The internal structure is based on single chains of silicon and oxygen. Diopside (X = Ca, Y = Mg) and augite (X = Ca, Y = Mg,Fe,Al) are common pyroxenes.
Jadeite (NaAlSi2O6), which is considered the more valuable form of jade, is also a pyroxene.
Jadeite (NaAlSi2O6), which is considered the more valuable form of jade, is also a pyroxene.
© RM 2009. Helicon Publishing is division of RM.
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