RT Journal Article
T1 Transformación de andalucita a sillimanita en granitosperalumínicos del batolito de los Montes de Toledo:implicaciones petrogenéticas
A1 Merino Martínez, Enrique
A1 Villaseca González, Carlos
A1 Pérez-Soba Aguilar, Cecilia María
A1 López García, José Ángel
AB The Montes de Toledo Batholith comprises several felsic peraluminous granitic plutons characterized bythe presence of two Al2SiO5 polymorphous: andalusite and sillimanite (as fibrolitic variety). Textural featuresindicate an igneous origin for andalusite, variably replaced by muscovite and fibrolite around it. We proposea combination of factors to explain this probable magmatic reaction: the decrease in minor elementcontents of andalusite (Fe, Mg, Mn, Ti) and the increase of volatiles in the melt (B, P, F, H2O) along itscooling. This chemical variation influences the stability of both polymorphs, crystallizing initially igneousandalusite and, when the Fe content decreases, the sillimanite, in relation with muscovite, in a restrictedP-T space close to the granite solidus conditions.
PB Sociedad Geológica de España
SN 0213-683X
YR 2008
FD 2008
LK https://hdl.handle.net/20.500.14352/49609
UL https://hdl.handle.net/20.500.14352/49609
LA spa
DS Docta Complutense
RD 31 mar 2026