Rodingite fromMarylandRodingite is ametasomatic rock composed ofgrossular-andradite garnet,calcic pyroxene, vesuvianite,epidote andscapolite.[1] Rodingites are common wheremafic rocks are in proximity toserpentinizedultramafic rocks. The mafic rocks are altered by high pH, Ca2+ and OH− fluids, which are a byproduct of the serpentinization process, and become rodingites.[2][3] The mineral content of rodingites is highly variable, their high calcium, low silicon and environment of formation being their defining characteristic.[4] Rodingites are common inophiolites, serpentinitemélanges, ocean floorperidotites andeclogite massifs. Rodingite was first named from outcrops of theDun Mountain Ophiolite Belt in theRoding River,Nelson,New Zealand.[5]
An obsolete name for rodingite isgranatite.
A rodingite dyke (white) in serpentinite (green) in the Dun Mountain Ophiolite Belt, New ZealandWikimedia Commons has media related to
Rodingite.
- ^Fettes, Douglas; Desmons, Jacqueline (2007).Metamorphic Rocks - A Classification and Glossary of Terms. Cambridge University Press.
- ^Laborda-López, Casto; López-Sánchez-Vizcaíno, Vicente; Marchesi, Claudio; Gómez-Pugnaire, María Teresa; Garrido, Carlos J.; Jabaloy-Sánchez, Antonio; Padrón-Navarta, José A.; Hydas, Károly (2018)."High-P metamorphism of rodingites during serpentinite dehydration (Cerro del Almirez, Southern Spain): Implications for the redox state in subduction zones".Journal of Metamorphic Geology.36 (9):1141–1173.Bibcode:2018JMetG..36.1141L.doi:10.1111/jmg.12440.hdl:10261/214213.
- ^Salvioli-Mariani, Emma; Boschetti, Tiziano; Toscani, Lorenzo; Montanini, Alessandra; Petriglieri, Jasmine Rita; Bersani, Danilo (2020)."Multi-stage rodingitization of ophiolitic bodies from Northern Apennines (Italy): Constraints from petrography, geochemistry and thermodynamic modelling".Geoscience Frontiers.11 (6):2103–2125.Bibcode:2020GeoFr..11.2103S.doi:10.1016/j.gsf.2020.04.017.
- ^Python; Marie; Masako; Yoshikawa; Tomoyuki Shibata; Shoji Arai (2011).Dyke swarms: Keys for geodynamic interpretation. Berlin, Heidelberg: Springer. pp. 401–435.Bibcode:2011dskg.book.....S.
- ^Johnston, M. R. (2007)."Nineteenth-century observations of the Dun Mountain Ophiolite Belt, Nelson, New Zealand and trans-Tasman correlations".Geological Society, London, Special Publications.287 (1):375–387.Bibcode:2007GSLSP.287..375J.doi:10.1144/sp287.27.S2CID 129776536.
