Orthopyroxene, Igneous, Gatineau, Quebec Orthopyroxenite is an ultramafic and ultrabasic rock.
The pyroxenes (commonly abbreviated to Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes that crystallize in the monoclinic system are known as clinopyroxenes and those that crystallize in the orthorhombic system are known as orthopyroxenes.
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Keywords: crystal, enstatite, family, ferrosilite, gatineau, group, igneous, inosilicate, mafic, magnesium-iron, mantle-derived, metamorphic, mineral, minerals, orthopyroxene, orthorhombic, pyroxene, quebec, rock, rocks, silicate, specimen, system, ultrabasic, ultramafic