plagioklas - Plagioclase Definition Uses Facts Britannica Plagioclase lscm is a series of Na and Cabearing aluminosilicates that occur in most igneous metamorphic and sedimentary rocks Learn about its structure chemistry properties twinning alteration and how to identify it in thin section and in hand specimen Plagioclase feldspar is a group of minerals with varying amounts of sodium and calcium It is the most abundant mineral in the Earths crust and has many applications in building ceramics and industry The Plagioclase series is a group of related feldspar minerals that essentially have the same formula but vary in their percentage of sodium and calcium Albite and Anorthite are the end members of the series with the intermediary minerals Oligoclase Andesine Labradorite and Bytownite The acclaimed Danas System of Mineralogy lists the intermediary members as individual minerals whereas Learn about the structure composition properties and occurrence of feldspars the most common group of alumosilicates of alcalic metals Plagioclase feldspars are the only ones that form complete solid solution series between albite and anorthite Plagioclase Feldspar A group of common rockforming minerals Geologycom Plagioclase Geology is the Way Plagioclase is a solid solution series of albite and anorthite ranging from pure albite to pure anorthite It is the most abundant rockforming mineral in many igneous and metamorphic rocks and some varieties are used as gemstones or building stones Plagioclase is a series of silicate minerals in feldspar group with variable composition of sodium and calcium It is a common rockforming mineral in igneous and metamorphic bagas3 rocks and has various optical properties and uses Feldspars all about the plagioclases and Kfeldspars MineralExpertorg Plagioclase Feldspar PhysicalOptical Properties Occurrence Uses Plagioclase Encyclopedia MDPI The plagioclase Mineral Series The Mineral and Gemstone Kingdom Plagioclase displaying cleavage unknown scale In volcanic rocks finegrained plagioclase can display a microlitic texture of many small crystals Plagioclase ˈ p l æ dʒ i ə ˌ k l eɪ s ˈ p l eɪ dʒˌ k l eɪ z PLAJeeəklayss PLAYJ klayz 4 is a series of tectosilicate framework silicate minerals within the feldspar group Rather than referring to a Plagioclase Wikipedia Plagioclase Feldspar Common Minerals Plagioclase feldspar SpringerLink Plagioclase is an aluminosilicate series with sodium andor calcium The word plagioclase is from the Greek plagios oblique and clasis fracture in reference to the two nonorthogonal cleavages feldspar is from the Swedish feldt field and spat spar supposedly a reference to the occurrence of the spar in fields see Feldspar Group The distinction between these minerals cannot easily be made in the field The composition can be roughly determined by specific gravity but accurate measurement requires chemical or optical tests The composition in a crushed grain mount can be obtained by the Tsuboi method which yields an accurate measurement of the minimum refractive index that in turn gives an accurate composition Plagioclase is a series of feldspar minerals that form a solidsolution series between albite and anorthite It is abundant in Earths crust and has various applications in afakia glass ceramics and gemstones
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