Coexistence of pyrophyllite, I-S, R1 and NH4+-rich illite in Silurian black shales (Sierra de Albarracín, NE Spain): metamorphic vs . hydrothermal origin
Publisher: Mineralogical Society
ISSN: 1471-8030
Source: Clay Minerals, Vol.45, Iss.3, 2010-09, pp. : 383-392
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Abstract