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- Norite abstract "Norite, also known as orthopyroxene gabbro, is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. Norite may be essentially indistinguishable from gabbro without thin section study under the petrographic microscope. The principal difference between norite and gabbro, however, is the type of pyroxene of which it is composed; norite is predominately composed of orthopyroxenes, largely high magnesian enstatite or an iron bearing intermediate hypersthene, whereas the principal pyroxenes in gabbro are clinopyroxenes, generally medially iron-rich augites.Norite occurs with gabbro and other mafic to ultramafic rocks in layered intrusions which are often associated with platinum orebodies such as in the Bushveld Igneous Complex in South Africa, the Skaergaard igneous complex of Greenland, and the Stillwater igneous complex in Montana, USA. Norite is also the basal igneous rock of the Sudbury Basin complex in Ontario, which is the site of a meteorite impact and the world's second-largest nickel mining region. Norite is a common rock type of the Apollo samples. On a smaller scale, norite can be found in small localized intrusions such as the Gombak Norite in Bukit Gombak, Singapore. It is also plentiful in the Egersund intrusion area of southwestern Norway, with titanium deposits to the east.The name Norite is derived from the Norwegian name for Norway: Norge.".
- Norite wikiPageID "1657644".
- Norite wikiPageRevisionID "604664510".
- Norite hasPhotoCollection Norite.
- Norite subject Category:Igneous_petrology.
- Norite subject Category:Mafic_rocks.
- Norite type NaturalObject100019128.
- Norite type Object100002684.
- Norite type PhysicalEntity100001930.
- Norite type Rock109416076.
- Norite type UltramaficRocks.
- Norite type Whole100003553.
- Norite comment "Norite, also known as orthopyroxene gabbro, is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. Norite may be essentially indistinguishable from gabbro without thin section study under the petrographic microscope.".
- Norite label "Noriet".
- Norite label "Norit".
- Norite label "Norita".
- Norite label "Norite".
- Norite label "Norite".
- Norite label "Norite".
- Norite label "Norito".
- Norite label "Noryt".
- Norite label "Норит".
- Norite sameAs Norit.
- Norite sameAs Norit.
- Norite sameAs Norita.
- Norite sameAs Norite.
- Norite sameAs Norite.
- Norite sameAs Noriet.
- Norite sameAs Noryt.
- Norite sameAs Norito.
- Norite sameAs m.05l68f.
- Norite sameAs Q1468713.
- Norite sameAs Q1468713.
- Norite sameAs Norite.
- Norite wasDerivedFrom Norite?oldid=604664510.
- Norite isPrimaryTopicOf Norite.