coronite

plural coronites

1. chemistryTiny grains of titanium nitride evenly dispersed in a heat treatable steel matrix, resulting in a manufactured material that combines the toughness of steel with the wear resistance of carbide.

   Four stages in the evolution of the Allalin gabbro can be recognized: […] 2. Coronites, with olivine or its pseudomorphs surrounded by garnet rims. Plagioclase in these rocks is pseudomorphed by jadeite-bearing assemblages.

   2017, J. Theo Kloprogge, Robert Lavinsky, “Introduction: Geological Examples”, in Photo Atlas of Mineral Pseudomorphism, Amsterdam: Elsevier, →ISBN, page 87

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   In the context of the upper slice of the Sobrado unit, the presence of high-P granoblastic granulites and the low Na contents of clinopyroxene in the coronites indicate that the latter represent arrested stages during transformation to granulite.

   2002, José R. Martínez Catalán, Ricardo Arenas, “Prograde development of corona textures in metagabbros of the Sobrado unit (Ordenes Complex, northwestern Iberian Massif)”, in José R. Martínez Catalán, Robert D. Hatcher Jr., Ricardo Arenas, Florentino Díaz García, editors, Variscan-Appalachian Dynamics: The Building of the Late Paleozoic Basement (Special Papers; 364), Boulder, CO: Geological Society of America, →ISBN, page 84