Albite is a plagioclase feldspar mineral. It is the sodium endmember of the plagioclase solid solution series. It represents a plagioclase with less than...

Friedrich Christian Hessel (1796–1872) in 1826. The series ranges from albite to anorthite endmembers (with respective compositions NaAlSi3O8 to CaAl2Si2O8)...

chlorite + albite + quartz pumpellyite + chlorite + epidote + albite + quartz pumpellyite + epidote + stilpnomelane + muscovite + albite + quartz In...

(K-spar) endmember KAlSi3O8 albite endmember NaAlSi3O8 anorthite endmember CaAl2Si2O8 Solid solutions between K-feldspar and albite are called alkali feldspar...

feldspar (near albite, NaAlSi3O8, in composition). Typically, the host grain is orthoclase or microcline, and the lamellae are albite. If sodic feldspar...

of orthoclase and albite within the stone. The diffracted light varies from white to blue, depending on the thinness of the albite layers. More technically...

intermediate member of the high albite – sanidine alkali feldspar solid solution series. Intermediate members of this series, high albite, anorthoclase and high...

described as a solid solution of the endmembers K-feldspar (KAlSi 3O 8), albite (NaAlSi 3O 8) and anorthite (CaAl 2Si 2O 8). A specific feldspar can have...

hornblende/actinolite +/- albite +/- biotite +/- quartz +/- garnet (calcite +/- wollastonite) Pelite; quartz, orthoclase +/- albite, +/- biotite +/- actinolite...

lattice i.e. niobium, zirconium Albitite, from replacement of plagioclase by albite (albitization) Effects of metasomatism in mantle peridotite can be either...

solid solution with albite, the sodium endmember (NaAlSi3O8), of plagioclase. While slowly cooling within the earth, sodium-rich albite lamellae form by...

Albite Anorthite Anorthoclase Amazonite Bytownite Celsian Microcline Moonstone Adularia (var.) Rainbow (var.) Orthoclase Unakite Plagioclase Albite Labradorite...

Akrochordite Aksaite Aktashite Alabandite Alacránite Alamosite Alarsite Albite Albrechtschraufite Alcantarillaite Aldermanite Aleksite Aleutite Alforsite...

substitute. Alkali feldspar minerals, for example, have end members of albite, NaAlSi3O8 and microcline, KAlSi3O8. At high temperatures Na+ and K+ readily...

potassium-rich orthoclase and sodium-rich albite; in the case of plagioclase, the most common series ranges from albite to calcium-rich anorthite. Crystal twinning...

dominates, commonly represented by orthoclase and the exsolved lamellar albite, form perthite. In some rocks the potash feldspar, in others the soda feldspar...

of the minerals glaucophane + ( lawsonite or epidote ) +/- jadeite +/- albite or chlorite +/- garnet +/- muscovite in a rock of roughly basaltic composition...

Sanidine and high albite constitute a solid solution series with intermediate compositions termed anorthoclase. Exsolution of an albite phase does occur;...

the feldspar minerals plagioclase and microcline. These minerals show the Albite and Pericline Laws. The most common twin operations by crystal system are...

moonstone, also murchisonite, Ceylon opal, hecatolite — a decorative variety of albite (oligoclase) of white or light gray color with a distinct iridescence effect...

of the protolith. For a mafic protolith, the albite-epidote hornfels facies is characterized by albite and epidote or zoisite with minor actinolite and...

associated minerals include: natrolite, neptunite, joaquinite, serpentine and albite. Benitoite is a rare mineral found in very few locations including San Benito...

actinolite + albite +/- epidote Ultramafic: chlorite + serpentine +/- talc +/- tremolite +/- diopside +/- brucite Pelites: quartz +/- albite +/- k-feldspar...

tabular, rhombic in cross section, striated; massive Twinning Common by albite, pericline, Carlsbad, Baveno, or Manebach twin laws Cleavage Perfect on...

Crystals rare, to 2 cm; commonly massive or granular Twinning Common following albite, pericline, and carlsbad twin laws Cleavage Perfect on {001}, good on {010}...

physical characters it is intermediate between albite (NaAlSi3O8) and anorthite (CaAl2Si2O8). The albite:anorthite molar ratio of oligoclase ranges from...

Perthite is either microcline or orthoclase with thin lamellae of exsolved albite. Amazon stone, or amazonite, is a green variety of microcline. It is not...

intermediate member of a solid solution series (50 to 70 % anorthite and albite)Pages displaying short descriptions of redirect targets Optical phenomena –...

Maw sit sit, also known as jade-albite, is a gemstone found exclusively in northern Burma. It was first identified in 1963 by the late Swiss gemologist...

containing clay minerals. Chlorite is found in pelites along with quartz, albite, sericite, and garnet, and is also found in associate with actinolite and...