Anorthite (an = not, ortho = straight) is the calcium endmember of the plagioclase feldspar mineral series. The chemical formula of pure anorthite is CaAl2Si2O8. Anorthite is found in mafic igneous rocks. Anorthite is rare on the Earth[6] but abundant on the Moon.[7]
^J.R. Goldsmith (1980): The melting and breakdown reactions of anorthite at high pressures and temperatures. Am. Mineralogist. 65, 272-284, http://www.minsocam.org/ammin/AM65/AM65_272.pdf
^Handbook of Mineralogy
^Mindat
^Webmineral
^Deer, W.A., Howie, R.A. and Zussman, J. (1966). An Introduction to the Rock Forming Minerals. London: Longman. p. 336. ISBN 0-582-44210-9.{{cite book}}: CS1 maint: multiple names: authors list (link)
^"Significant Lunar Minerals" (PDF). In Situ Resource Utilization (ISRU). NASA. Archived from the original (PDF) on 27 May 2010. Retrieved 23 August 2018.
anorthite is CaAl2Si2O8. Anorthite is found in mafic igneous rocks. Anorthite is rare on the Earth but abundant on the Moon. Anorthite is the calcium-rich...
Christian Hessel (1796–1872) in 1826. The series ranges from albite to anorthite endmembers (with respective compositions NaAlSi3O8 to CaAl2Si2O8), where...
almost all anorthite, the temperature will reach nearly the melting point of pure anorthite before all the anorthite is melted. If the anorthite content...
anorthite endmember CaAl2Si2O8 Solid solutions between K-feldspar and albite are called alkali feldspar. Solid solutions between albite and anorthite...
an intermediate to calcic member of the plagioclase series. It has an anorthite percentage (%An) of between 50 and 70. The specific gravity ranges from...
total feldspar content. Gabbroids are distinguished from dioritoids by an anorthite (calcium plagioclase) fraction of their total plagioclase of greater than...
Labradorescence – Mineral: intermediate member of a solid solution series (50 to 70 % anorthite and albite)Pages displaying short descriptions of redirect targets Optical...
has formula CaAl2Si2O8. In minerals, as a feldspar, it can be found as anorthite, an end-member of the plagioclase series. As a food additive, it is sometimes...
characters it is intermediate between albite (NaAlSi3O8) and anorthite (CaAl2Si2O8). The albite:anorthite molar ratio of oligoclase ranges from 90:10 to 70:30...
series. Its chemical formula is (Ca, Na)(Al, Si)4O8, where Ca/(Ca + Na) (% anorthite) is between 30 and 50%. The formula may be written as Na0.7-0.5Ca0.3-0...
concentration in the range of 10–18% by weight, present in the mineral anorthite (CaAl 2Si 2O 8), the calcium endmember of the plagioclase feldspar mineral...
engineering), most often seen as A.N. Attonewton (aN), an SI unit of force Anorthite, a feldspar mineral Adobe Animate, an Adobe animation software A prefix...
solid solution series. It represents a plagioclase with less than 10% anorthite content. The pure albite endmember has the formula NaAlSi 3O 8. It is...
series from sodium-rich end member albite (NaAlSi3O8) to calcium-rich anorthite (CaAl2Si2O8) with four recognized intermediate varieties between them...
rock is composed almost exclusively of the calcium-rich feldspar mineral anorthite, and is believed to be representative of the highland crust. A geochemical...
composed of calcium-poor pyroxene, pigeonite, and calcium-rich plagioclase (anorthite). Based on differences of chemical composition and features of the component...
andesite varies widely in sodium content, from anorthite to oligoclase, but is typically andesine, in which anorthite makes up about 40 mol% of the plagioclase...
interstitial. The feldspar is high in anorthite (as opposed to albite), the calcium endmember of the plagioclase anorthite-albite solid solution series, most...
plagioclase solid solution series of feldspar minerals with composition between anorthite and labradorite. It is usually defined as having between 70 and 90%An...
(I) Anorthite and augite. Meteoric iron barely noticeable. (Eu) Eucrite: Crystalline or breccia. (*) Shergotty: Augite and maskelynite. (II) Olivine...
(Hongshan culture 4700–2200 BC). Dushan Jade (a rock composed largely of anorthite feldspar and zoisite) was being mined as early as 6000 BC. In the Yin...
from the missions were found to be composed of a mineral called anorthite. Anorthite consists mostly of a variety of plagioclase feldspars, which are...
determines the rock type. In a few cases, such as the diorite-gabbro-anorthite field, additional mineralogical criteria must be applied to determine...
solution of the endmembers K-feldspar (KAlSi 3O 8), albite (NaAlSi 3O 8) and anorthite (CaAl 2Si 2O 8). A specific feldspar can have varying quantities of potassium (K)...
appear to be composed of rocks with high concentrations of the mineral anorthite. The mare basalts have relatively high iron values. Furthermore, some...
floor of the magma chamber, although they are possible on the roofs if anorthite plagioclase is able to float free of a denser mafic melt. Cumulates are...
vapours containing chlorides. The basic soda-lime feldspars (labradorite to anorthite) are those that undergo this type of alteration. Many instances of scapolitization...
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