• Plagioclase - Wikipedia

    en.wikipedia.org/wiki/Plagioclase Plagioclase is a series of tectosilicate (framework silicate) 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 plagioclase feldspar series (from the Ancient Greek for "oblique fracture", in reference to its two cleavage angles).
  • plagioclase | Definition, Uses, & Facts | Britannica

    www.britannica.com/science/plagioclase Plagioclase, any member of the series of abundant feldspar minerals usually occurring as light-colored, glassy, transparent to translucent, brittle crystals. Plagioclase is a mixture of albite, or sodium aluminosilicate, and anorthite, or calcium aluminosilicate.
  • Plagioclase Feldspar: A group of common rock-forming minerals

    geology.com/minerals/plagioclase.shtml What is Plagioclase? “Plagioclase” is the name of a group of feldspar minerals that form a solid solution series ranging from pure albite, Na(AlSi 3 O 8), to pure anorthite, Ca(Al 2 Si 2 O 8).Minerals in this series are a homogenous mixture of albite and anorthite. The names of the minerals in the series are arbitrarily given based upon their relative abundance of albite and anorthite.
  • Plagioclase | Definition of Plagioclase at Dictionary.com

    www.dictionary.com/browse/plagioclase Plagioclase definition, any of the feldspar minerals varying in composition from acidic albite, NaAlSi3O8, to basic anorthite, CaAl2Si2O8, found in most igneous rocks: shows twinning striations on good cleavage surfaces. See more.
  • Plagioclase - definition of plagioclase by The Free Dictionary

    www.thefreedictionary.com/plagioclase plagioclase (ˈpleɪdʒɪəʊˌkleɪz) n (Minerals) a series of feldspar minerals consisting of a mixture of sodium and calcium aluminium silicates in triclinic crystalline form: includes albite, oligoclase, and labradorite plagioclastic adj pla•gi•o•clase (ˈpleɪ dʒi əˌkleɪs) n. any of the feldspar minerals varying in composition from albite ...
  • Plagioclase - an overview | ScienceDirect Topics

    www.sciencedirect.com/topics/earth-and-planetary-sciences/plagioclase Plagioclase contains significant amounts of an anorthite component. Oligoclase is the minimum requirement, typical is andesine or labradorite. Greenschist Facies. In the greenschist facies mafic rocks contain actinolite and albite. Actinolite is an Al-poor amphibole; it contains mainly tremolite. Actinolite is green in hand specimen and ...
  • Plagioclase definition and meaning | Collins English ...

    www.collinsdictionary.com/dictionary/english/plagioclase Plagioclase definition: a series of feldspar minerals consisting of a mixture of sodium and calcium aluminium... | Meaning, pronunciation, translations and examples
  • University of Minnesota’s Mineral Pages: Plagioclase Feldspar

    www.esci.umn.edu/courses/1001/minerals/plagioclase_feldspar.shtml Plagioclase minerals are hard, non-metallic minerals that exhibit two cleavage directions that meet at nearly right angles. The name ‘plagioclase’ refers to this cleavage pattern, coming from the Greek words for ‘oblique’ (plagios) and ‘to break’ (klasis).Apart from pegmatites, the plagioclase minerals seldom occur as well-defined isolated crystals, but instead occur as blocky to ...
  • Plagioclase | EVE Wiki | Fandom

    eve.fandom.com/wiki/Plagioclase Plagioclase is not amongst the most valuable ore types around, but it has the largest amount of Pyerite of any ore and is thus always in constant demand. It also yields some Tritanium and Mexallon. It has a volume of 0.35m3, and it requires 333 ore units to refine. There are two variants: Contents[show] Azure Plagioclase Azure Plagioclase was made infamous in the melancholic song prose Miner ...
  • Plagioclase – Wikipédia, a enciclopédia livre

    pt.wikipedia.org/wiki/Plagioclase Plagioclase ou plagioclásio é uma importante série de tectossilicatos da família dos feldspatos.Esta designação não se refere a um mineral com uma composição química específica, mas a uma série de soluções sólidas, mais conhecida como a série da plagioclase (do grego para "fractura oblíqua" devido aos seus dois ângulos de clivagem).