an·or·thite

(ăn-ôr′thīt)

A white to gray variety of plagioclase feldspar that contains a high proportion of calcium to sodium and occurs in alkaline igneous rocks such as gabbro and anorthosite.

[From Greek an-, not; see a-¹ + orthos, straight (from its oblique crystals).]

an′or·thit′ic (-thĭt′ĭk) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

anorthite

(ænˈɔːθaɪt)

(Minerals) a white to greyish-white or reddish-white mineral of the feldspar group and plagioclase series, found chiefly in igneous rocks and more rarely in metamorphic rocks. It is used in the manufacture of glass and ceramics. Composition: calcium aluminium silicate. Formula: CaAl2Si2O8. Crystal structure: triclinic

[C19: from an- + ortho- + -ite¹]

anorthitic adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

an•or•thite

(ænˈɔr θaɪt)

n.

a white or gray feldspar mineral, CaAl₂Si₂O₈, calcic plagioclase.

[1823; an-¹ + Greek orth(ós) straight + -ite¹]

an`or•thit′ic (-ˈθɪt ɪk) adj.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

anorthite - rare plagioclastic feldspar occurring in many igneous rocks

oligoclase, plagioclase - any of a series of triclinic feldspars that form rocks

Translations

anortit

Mentioned in

References in periodicals archive

The presence of aluminous minerals like anorthite, scapolite or spinel is generally a reliable indicator of marble.

KEY INDICATOR MINERALS AND CHEMISTRY FOR CARBONATITES: A REVIEW

Ma, "Ca 2+ and OH--release of ceramsites containing anorthite and gehlenite prepared from waste lime mud," Journal of Environmental Sciences, vol.

A Study on Ceramsite Production Using Dredging Sea Mud and Its Biofilm Formation Capacity Evaluation

The used standards for major, minor, and REE components were wollastonite (Si), anorthite (Al, Ca), omphacite (Na), olivine (Mg), K-feldspar (K), Zr-jarosite (Zr), ilmenite (Ti), Cr pure (Cr), rhodonite (Mn, Zn), fayalite (Fe), celestine (Sr), sanbornite (Ba), and F-apatite (F).

Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia)

The only particularity found is for the paste with presence of limestone (M3), in which formation of calcium feldspar (anorthite) was evidenced.

Influencia de las materias primas y de la tecnica de moldeo en la fabricacion de productos ceramicos tipo gres

The study by FARIA (2008) demonstrated that the crystal grains are richer in Na at their periphery and richer in Ca at the core, so the composition of the borders is albite (the sodic plagioclase), and the core is anorthite (the calcic plagioclase).

Chemical attributes of a remineralized Oxisol/Atributos quimicos de um Latossolo remineralizado

[54] Luttge A, Bolton EW, Lasaga AC (1999) An interferometric study of the dissolution kinetics of anorthite: The role of reactive surface area.

Phase Uncertainty in Digital Holographic Microscopy Measurements in the Presence of Solution Flow Conditions

Above 850[degrees]C, the decomposition of calcite can give rise to high-temperature calcosilicates and alumino-calcosilicates, member of the pyroxene group, such as the diopside, plagioclase feldspars (anorthite), gehlenite and wollastonite (Papachristodoulou et al.

Firing temperature determination and thermoluminescence dating of a brick with cuneiform characters found in the ruins of Ancient Babylon/Determinacao da temperatura de queima e datacao por termoluminescencia de um tijolo com caracteres cuneiformes encontrado nas ruinas da antiga Babilonia

From that point, material decomposition reduced the mass fraction of anorthite and substance transformation improved that of the microcline.

Effects of Heating Rate on the Dynamic Tensile Mechanical Properties of Coal Sandstone during Thermal Treatment