Norite
A rock classification type
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About Norite
A gabbro where the main mafic mineral is orthopyroxene.
A coarse-grained plutonic rock containing basic plagioclase (labradorite) as the chief constituent and differing from gabbro by the presence of orthopyroxene (hypersthene) as the dominant mafic mineral.
A coarse-grained plutonic rock containing basic plagioclase (labradorite) as the chief constituent and differing from gabbro by the presence of orthopyroxene (hypersthene) as the dominant mafic mineral.
Unique Identifiers
Mindat ID:
48288
Long-form identifier:
mindat:1:1:48288:4
Similar Names
| Aorite | A variety of 'Gneiss' | |
| Korite | A synonym of 'Ammolite' | |
| Nauruite | A synonym of Fluorapatite | |
| Nierite | A valid IMA mineral species | Si3N4 |
| Nordite | A synonym | |
| Nordite-(Ce) | A valid IMA mineral species - grandfathered | (Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 |
| Nordite-(La) | A valid IMA mineral species - grandfathered | (La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 |
| Nosite | A synonym of Nosean | |
| Torite | A synonym of Thorite | |
| Zorite | A valid IMA mineral species | Na8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2O |
Classification of Norite
Gabbro is in section 10 of the QAPF diagram.
Sub-divisions of Norite
Mineralogy of Norite
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Pyroxene > Orthopyroxene | A petrological term for Orthopyroxene Subgroup. |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Amphibole > Hornblende | AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| Mica > Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Common Associates
Associations Based on Photo Data:
| 23 photos of Norite associated with Ilmenite | Fe2+TiO3 |
| 22 photos of Norite associated with Pyrite | FeS2 |
| 19 photos of Norite associated with Chalcopyrite | CuFeS2 |
| 16 photos of Norite associated with Pyrrhotite | Fe1-xS |
| 10 photos of Norite associated with Pentlandite | (NixFey)Σ9S8 |
| 2 photos of Norite associated with Hematite | Fe2O3 |
| 1 photo of Norite associated with Ulvöspinel | TiFe2+2O4 |
Internet Links for Norite
mindat.org URL:
https://www.mindat.org/min-48288.html
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References for Norite
Reference List:
Bosspruit quarry, Rustenburg, Rustenburg Local Municipality, Bojanala Platinum District Municipality, North West, South Africa