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двупироксен abbr. stresses
Gruzovik, abbr.	Px (the pyroxenes are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks)
Gruzovik, mineral.	bipyroxene (the pyroxenes (commonly abbreviated to Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks)