Definition of Plagioclase. Meaning of Plagioclase. Synonyms of Plagioclase

Here you will find one or more explanations in English for the word Plagioclase. Also in the bottom left of the page several parts of wikipedia pages related to the word Plagioclase and, of course, Plagioclase synonyms and on the right images related to the word Plagioclase.

Definition of Plagioclase

Plagioclase
Plagioclase Pla"gi*o*clase, n. [Gr. ? oblique + ? to break.] (Min.) A general term used of any triclinic feldspar. See the Note under Feldspar.

Meaning of Plagioclase from wikipedia

- Plagioclase (/ˈplædʒ(i)əˌkleɪs, ˈpleɪdʒ-, -ˌkleɪz/ PLAJ-(ee)-ə-klayss, PLAYJ-, -⁠klayz) is a series of tectosilicate (framework silicate) minerals within...
- pot****ium, or barium. The most common members of the feldspar group are the plagioclase (sodium-calcium) feldspars and the alkali (pot****ium-sodium) feldspars...
- and plagioclase makes up more than 65% of the total feldspar content. Gabbroids are distinguished from dioritoids by an anorthite (calcium plagioclase) fraction...
- effect (schiller). Labradorite is an intermediate to calcic member of the plagioclase series. It has an anorthite percentage (%An) of between 50 and 70. The...
- phaneritic, intrusive igneous rock characterized by its composition: mostly plagioclase feldspar (90–100%), with a minimal mafic component (0–10%). Pyroxene...
- intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides...
- quartz in plagioclase. The intergrowths are microscopic in scale, typically with maximum dimensions less than 1 millimeter. The plagioclase is sodium-rich...
- sodic plagioclase (An70–85), norites (plagioclase-orthopyroxene), and gabbronorites (plagioclase-clinopyroxene-orthopyroxene) with similar plagioclase compositions...
- plagioclase phenocrysts, but 4% olivine microphenocrysts, might be termed an aphyric to sp****ly plagioclase-olivine phyric basalt, where plagioclase...
- contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar, but with little or no quartz. It is typically dark-colored...