Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. The name norite is derived from Norway, by its Norwegian name Norge .

2023年11月17日 · Norite is a type of igneous rock that is primarily composed of the mineral orthopyroxene, along with plagioclase feldspar. It is a mafic rock, meaning it has a high content of dark-colored minerals, such as pyroxene and/or amphibole.

2023年10月4日 · Norite rock mostly forms from the slow cooling of crustal contaminated and progressively fractional crystalized basaltic magma deep inside the Earth’s crust. The slow cooling produces coarse-grained texture, while progressive fractionation creates a layered intrusion.

23 photos of Norite associated with Ilmenite: Fe 2+ TiO 3: 22 photos of Norite associated with Pyrite: FeS 2: 19 photos of Norite associated with Chalcopyrite: CuFeS 2: 16 photos of Norite associated with Pyrrhotite: Fe 1-x S: 10 photos of Norite associated with Pentlandite (Ni x Fe y) Σ9 S 8: 2 photos of Norite associated with Hematite: Fe 2 ...

Norite is a coarse-grained basic igneous rock dominated by essential calcic plagioclase and orthopyroxene. The name Norite is derived from the Norwegian name for Norway: Norge. Norite may be essentially indistinguishable from gabbro without thin …

Norite is a fascinating rock with a mafic composition, containing less than 55 percent total silica. Its composition primarily consists of plagioclase feldspar and pyroxene, setting it apart as a distinctive variety of gabbro.

2024年7月14日 · Norite is a mafic rock dominated by calcium-rich plagioclase and magnesium-rich orthopyroxene. It also has a smaller amount of biotite, clinopyroxene, hornblende, and sometimes olivine, cordierite, or alkali feldspar, with quartz, ilmenite, and magnetite being the most common accessory minerals.

Gabbro and norite are basic intrusive rocks composed principally of calcic plagioclase and pyroxene, with or without olivine. In gabbro the dominant ferromagnesian mineral is clinopyroxene, whereas it is orthopyroxene in norite.

The norite stratigraphy is overlain by the QGAB which contains an upper unit of hornblende gabbro with acicular needs of amphibole that is termed the Crows Foot Granophyre. From: Nickel Sulfide Ores and Impact Melts , 2017

NORITE - Intrusive igneous, plutonic to hypabyssal. Norite is a gabbro with predominantly orthorhombic pyroxene (enstatite or hypersthene) ra ther than clinopyroxenes. IUGS classification is opx/(opx + cpx) > 95, 0-5% Q, P/(A + P) > 90, and pl/(pl + px + ol) is 10 - 90. The opx may