Anorthite is a compositional variety of plagioclasePlagioclase
Plagioclase is a very important series of tectosilicate minerals within the feldspar family.... feldsparFeldspar
Feldspar is the name of an important group of rock-forming minerals which make up perhaps as much as 60% of the Earth's crus... . Plagioclase is an abundant mineralMineral
Minerals are natural compounds formed through geological processes.... in the EarthEarth
Earth is the third planet in the solar system in terms of distance from the Sun, and the fifth largest.... 's crustCrust (geology)
In geology, a crust is the outermost layer of a planet, part of its lithosphere.... . The formula of pure anorthite is CaCalcium
Calcium is the chemical element in the periodic table that has the symbol Ca and atomic number 20.... AlAluminium Overview
Aluminium or aluminum is the chemical element in the periodic table that has the symbol Al and atomic number 13... 2Si2OOxygen
Oxygen is a chemical element with the chemical symbol O and atomic number 8.... 8.
Calcium is the chemical element in the periodic table that has the symbol Ca and atomic number 20.... -rich endmemberEndmember (mineralogy)
An endmember in mineralogy is a mineral that is at the extreme end of a mineral series.... of the plagioclase solid solutionFacts About Solid solution
A solid solution is a solid-state solution of one or more solutes in a solvent.... , the other endmember being albiteAlbite
Albite is an alkali feldspar mineral.... , NaSodium
Sodium is a chemical element which has the symbol Na , atomic number 11, atomic mass 22.9898 g/mol, oxidation number +1.... AlSi3O8. Anorthite also refers to plagioclase compositions with more than 90 molecular percent of the anorthite endmember.
Occurrence
Anorthite is a rare compositional variety of plagioclase. It occurs in unusual igneousIgneous rock
Igneous rocks are formed when molten rock cools and solidifies, with or without crystallization, either below the surface a... and metamorphicMetamorphism
Metamorphism can be defined as the solid state recrystallisation of pre-existing rocks due to changes in heat and/or pressur... rocks on Earth. Its type localitiesType locality (geology)
In some natural sciences, type locality is the typical or representative location and is typically the first example of a ne... are Monte Somma and Valle di Fassa, ItalyItaly
Italy, officially the Italian Republic , is a Southern European country.... .
The Moon is Earth's only natural satellite.... highlands. Anorthite was discovered in samples from cometComet
A comet is a small body in the solar system that orbits the Sun and exhibits a coma and/or a tail both due primarily... Wild 2, and the mineral is an important constituent of Ca-Al-rich inclusionsCa-Al-rich inclusions
Ca-Al-rich inclusions are centimeter-sized light-coloured calcium and aluminium rich inclusions found in carbonaceous chondr... in rare varieties of chondritic meteoritesChondrite
Chondrites are stony meteorites that have not been modified due to melting or differentiation of the parent body.... .
