二長花崗岩

二長花崗岩
火成岩
	二長花崗岩，地點：Col des Croix, Haute-Saône, France

二長花崗岩（英語：Monzogranite）是黑雲母花崗岩，被認為是岩漿分離結晶的最終產物。二長花崗岩的特徵是長英質（SiO2 > 73%，FeO + MgO + TiO2 < 2.4），弱過鋁質（Al2O3/（CaO + Na2O + K2O）= 0.98–1.11），並含有鈦鐵礦、榍石、磷灰石和鋯石作為副礦物 . 雖然二長花崗岩的成分範圍很小，但它確定一種分異趨勢，該趨勢由黑雲母和斜長石的分離結晶控制。（法吉奧諾，2002 年）。二長花崗岩可分為鎂鉀二長花崗岩和鐵鉀二長花崗岩兩大類，並可根據其宏觀特徵、熔體特徵、同位素數據和發現地點進一步分類^[1]^[2]^[3]。

參考文獻

^ Aguado, Beatriz Valle, M. Rosário Azevedo, John Nolan, and M. Estela Martins. (2005) "Origin and emplacement of syn-orogenic Variscan granitoids in Iberia the Beiras massif." Journal of the Virtual Explorer, 2005 issues, Vol. 19.
^ Boiley, Miche, and Charles Gosselin. (2003) "Rare metal potential in the Near North, Québec." Geoscience Exhibit.
^ Fagiono, M. R., F. E. Nullo, J. E. Otamendi, et al. (2002) "Geología, petrología y mineralogía del granito Inti Huasi, sur de la sierra de Comechingones, Córdoba." Rev. Asoc. Geol. Argent., oct./dic. 2002, vol. 57, no. 4, p. 389–403. ISSN 0004-4822. Online Summary:

[”1”-1] Aguado, Beatriz Valle, M. Rosário Azevedo, John Nolan, and M. Estela Martins. (2005) "Origin and emplacement of syn-orogenic Variscan granitoids in Iberia the Beiras massif." Journal of the Virtual Explorer, 2005 issues, Vol. 19.

[”2”-2] Boiley, Miche, and Charles Gosselin. (2003) "Rare metal potential in the Near North, Québec." Geoscience Exhibit.

[”3”-3] Fagiono, M. R., F. E. Nullo, J. E. Otamendi, et al. (2002) "Geología, petrología y mineralogía del granito Inti Huasi, sur de la sierra de Comechingones, Córdoba." Rev. Asoc. Geol. Argent., oct./dic. 2002, vol. 57, no. 4, p. 389–403. ISSN 0004-4822. Online Summary:

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