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Authors: Melluso, L.*
Conticelli, S.*
D'Antonio, M.*
Saccani, E.*
Title: Mineralogic and bulk rock composition of Italian wollastonite- and melilite-bearing paralava and clinker: Further evidence of their pyrometamorphic nature
Title of journal: American Mineralogist
Series/Report no.: 90
Publisher: Mineralogical Society of America
Issue Date: 2005
DOI: 10.2138/am.2005.403r
Keywords: rock composition
Italian wollastonite
Abstract: Two small outcrops of wollastonite- and melilite-bearing paralavas, with a pyrometamorphic genesis, have been found along the Apennine chain, in Central Italy, at the localities of Colle Fabbri and Ricetto. Recent papers added new data strengthening the hypothesis that the Ricetto wollastonite- and melilite-bearing rocks were produced by pyrometamorphism of carbonate-rich siliciclastic sedimentary rocks. In addition, these new papers depicted the Ricetto paralavas as having wide mineralogical and compositional variations due to liquid immiscibility and/or carbonate devolatilization, paralleling the trend observed for other paralavas (e.g., Colle Fabbri, Italy; British Columbia, Canada; Wyoming, U.S.A.; etc.). The source of heat for inducing pyrometamorphism was not investigated in the original paper, which was the subject of the comment. Capitanio et al. (2004), on the basis of 14C age determination and of a mineralogical study, argued convincingly that heat was supplied to the Ricetto rocks by wood-combustion for charcoal production.
Appears in Collections:04.04.07. Rock geochemistry
04.04.05. Mineralogy and petrology
Papers Published / Papers in press

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