Plagioclase
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Plagioclase is a series of tectosilicate minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more properly known as the... Wikipedia
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Members of the plagioclase group are the most common rock-forming minerals. They are important to dominant minerals in most igneous rocks of the Earth's crust.
The plagioclase series is arbitrarily divided into six minerals or compositional ranges: albite (Ab90 - Ab100), oligoclase (Ab70 - Ab90), andesine (Ab50 - Ab70) ...
Feldspar group. A variety of Plagioclase with Albite 44%, Anorthite 42% and Celsian 14%. Originally reported from Kaso Mine, Kanuma, Tochigi Prefecture, Kanto ...
Plagioclase feldspar is used in ceramics, glass, enamel, false teeth, and scouring powders. Plagioclase feldspars are made up of sodium, calcium, aluminum, ...
Plagioclase Mineral Data ; Help on Composition: Composition: Molecular Weight = 270.77 gm ; Sodium 4.25 % Na 5.72 % Na2O ; Calcium 7.40 % Ca 10.36 % CaO ; Aluminum ...
The plagioclase feldspars are those within the plagioclase solid solution series. Albite (Na-rich end member) Oligoclase · Andesine · Labradorite
Plagioclase thin section photomicrographs are taken in plane-polarized light and cross-polarized light, and can easily be recognized under the microscope.
Plagioclase minerals are typically white or gray, hard blocky crystal masses that exhibit cleavage in two directions that are nearly at right angles. They are ...
Apr 19, 2024 · Plagioclase, any member of the series of abundant feldspar minerals usually occurring as light-colored, glassy, transparent to translucent, ...