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- W46648204 abstract "The granite of Montanchez (Caceres, Spain) is located to the S.E. of the Albala granite and is separated from it by a strongly tectonized zone. According to the mica content, three perografic facies have been distinguished in the Montanchez granite. Facies 1, is made up of medium to coarse grained, two mica granites richer in muscovite, which occupy the northern half of the granite and have been extremely deformed. Facies II, consiting of coarse to very coarse grained, sometimes porphyrblastic, two-mica granites, richer in biotite, has not been deformed, or very little. Facies III is made up of aplitic muscovite granties which are poor in biotite and rich in tourmaline. The Montanchez granite frecuently contains tonalitic xenolith, sometimes quitee large. Regarding the geochemistry of the Montanchez granite the major and some trace elements have been analyzed on 22 samples belonging to the three different facies and the tonalitic xenoliths. As for the major elements, the chemical-mineralogical parameters of la Roche, the binary diagrams of Harker, Larsen, la Roche and Deban and Le Fort, and the ternary diagrams Na 2 O, K 2 O, CaO, Na 2 O+K 2 O, Al 2 O 3 , CaO and AFM have been calculted. They indicate that these granties are made up alkaline rocks richer in Na than K, poor in Ca, and with a markedly peraluminous character. Concerning the distribution of the trace elements in the Montanchez granite the average conten in Rb, Ba, Sr, Zr and Nb lower and those in Sn and Zn higher, than the values reported by different autors for several world granites considered to be standard." @default.
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- W46648204 date "1989-12-30" @default.
- W46648204 modified "2023-09-28" @default.
- W46648204 doi "https://doi.org/10.3989/egeol.89455-6506" @default.
- W46648204 hasPublicationYear "1989" @default.
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