What elements make up plagioclase feldspar?
In respect to this, what are the elements of feldspar?
The mineralogical composition of most feldspars can be expressed in terms of the ternary system Orthoclase (KAlSi3O8), Albite (NaAlSi3O8) and Anorthite (CaAl2Si2O8). Chemically, the feldspars are silicates of aluminium, containing sodium, potassium, iron, calcium, or barium or combinations of these elements.
Furthermore, what minerals are in plagioclase feldspar? 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.
Additionally, what is plagioclase feldspar made out of?
The plagioclase feldspar subgroup consists of a continuous mineral series that is arbitrarily subdivided into six mineral categories whose composition varies from being relatively pure sodium aluminum silicate (albite) to a relatively pure calcium aluminum silicate (anorthite).
What is the chemical composition of plagioclase?
Plagioclase Mineral Data
|General Plagioclase Information|
|Composition:||Molecular Weight = 270.77 gm|
|Sodium 4.25 % Na 5.72 % Na2O|
|Calcium 7.40 % Ca 10.36 % CaO|