norite

plural norites

1. countableuncountableA granular crystalline rock consisting essentially of a triclinic feldspar (such as labradorite) and hypersthene.

   In contrast to these sedimentogenic zircons (zircons of the initial sedimentogenic-metamorphic phase) new growth of zircons, blastogenic in origin may be present in norites.

   1979, Stylianos-Savvas Augustithis, Atlas of the Textural Patterns of Basic and Ultrabasic Rocks and their Genetic Significance, Walter de Gruyter, page 31

   2 more examples

   1901, Joseph Hyde Pratt, The Occurrence and Distribution of Corundum in the United States, Geological Survey Bulletin 180, United States Department of the Interior, page 27, Where hypersthene prevails the rocks are grouped as norites, being subdivided into normal norite, horneblende-norite, mica-norite, and augite-norite, according to the presence of these different minerals in the rock.

   1942, John Calvin Reed, John Van Nostrand Dorr, Nickel Deposits of Bohemia Basin and Vicinity, Yakobi Island, Alaska, Geological Survey Bulletin 931-F, United States Department of the Interior, page 135, The samples indicate two relatively low grade areas in the norite, one in the northern part of the pit and the other just south of the large dike near the center of the pit.