Albite is an alkali feldsparmineral. It is the sodium endmember of the plagioclasesolid solution series. As such it represents a plagioclase with less than 10% anorthite content. The pure albite endmember has the formula NaAlSi3O8. It is a tectosilicate. Image File history File links Mineraly. ... Image File history File links Mineraly. ... Lunar Ferroan Anorthosite #60025 (Plagioclase Feldspar). ... Minerals are natural compounds formed through geological processes. ... An endmember in mineralogy is a mineral that is at the extreme end of a mineral series. ... Lunar Ferroan Anorthosite #60025 (Plagioclase Feldspar). ... Fig. ... Anorthite is one of the plagioclase feldspars, an important group of minerals abundant in the Earths crust. ... The silicate minerals make up the largest and most important class of rock-forming minerals. ...
Albite crystallizes with triclinic pinacoidal forms. Its specific gravity is about 2.62 and has a Mohs hardness of 6. Albite almost always exhibits crystal twinning often as minute parallel striations on the crystal face. Albite often occurs as fine parallel segregations alternating with pink microcline in perthite as a result of exolution on cooling. It occurs in granitic and pegmatite masses and also in some hydrothermal vein deposits. In crystallography, the triclinic crystal system is one of the 7 lattice point groups. ... Relative density (also known as specific gravity) is a measure of the density of a material. ... Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer. ... It has been suggested that twin boundary be merged into this article or section. ... Microcline (KAlSi3O8) is an important igneous rock forming tectosilicate mineral. ... A perthite is a structural (perthitic structure) variety of the potassium feldspars microcline and orthoclase (KAlSi3O8). ... Granite is a common and widely-occurring group of intrusive felsic igneous rocks that form at great depths and pressures under continents. ... This article or section does not cite its references or sources. ... Hydrothermal circulation in the oceans is the passage of the water through mid-ocean Ridge (MOR) systems. ...
It was first reported in 1815 for an occurrence in Sweden. The name is from Latin, albus for the typical white color. Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ...
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