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山东半岛东部变质岩中的角闪石分为角闪岩相岩石中的和麻粒岩、榴辉岩中的,均属钙质角闪石。角闪石的Mg、Ca含量主要受寄主岩石控制,而Si、AlⅣ、AlⅥ、Ti、(Na+K)含量主要受变质温压条件控制。随变质温度的增高,AlⅣ、Ti、(Na+K)增高,Si减少,随变质压力的增高AlⅥ增高。低角闪岩相的角闪石形成于520~600℃、0.46~1.04GPa的温压条件下,高角闪岩相的角闪石形成于650~700℃、0.75~0.89GPa的温压条件下。麻粒岩和榴辉岩中退变质阶段的角闪石主要形成于中压相系角闪岩相的温压条件。
The amphiboles in the metamorphic rocks of the eastern Shandong peninsula are divided into amphibolite facies and granulites, and the eclogites are all calcic amphiboles. The content of Mg and Ca in hornblende is mainly controlled by the host rock, while the content of Si, AlⅣ, Al Ⅵ, Ti and (Na + K) is mainly controlled by the metamorphic temperature and pressure conditions. With the increase of metamorphic temperature, AlⅣ, Ti, (Na + K) increased, while Si decreased. Al Ⅵ increased with the increase of metamorphic pressure. Amphiboles of low amphibolite facies were formed at temperatures of 520-600 ℃ and pressures of 0.46-1.04 GPa. Amphiboles from the amphibolite facies formed at 650-700 ℃ and 0.75-0. 89GPa temperature and pressure conditions. The amphibole from the metamorphic stage of granulite and eclogite is mainly formed under the conditions of temperature and pressure in the amphibolite facies of the middle-pressure facies.