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Alkali feldspar - Wikipedia

The alkali feldspar group are those feldspar minerals rich in the alkali elements, potassium and sodium. The alkali feldspars include albite, anorthoclase, microcline

alkali feldspar | mineral | Britannica.com

alkali feldspar mineral, a high-temperature form of potassium aluminosilicate (KAlSi 3 O 8) that sometimes occurs in surface rocks. Sanidine forms colourless or white ...

Feldspar - Wikipedia

Compositional phase diagram of the different minerals that constitute the feldspar solid solution.

Alkali Feldspar | Definition of Alkali Feldspar by Merriam ...

Define alkali feldspar: feldspar containing alkali metals (such as sodium or potassium or both) but little calcium

Gallery of Feldspars - ThoughtCo - ThoughtCo.com is the ...

Feldspars are a group of closely related minerals that together make up the majority of the Earth's crust. All of them have a hardness of 6 on the Mohs scale, so any ...

Alkali Feldspar: Alkali Feldspar mineral information and data.

Smith, J.V., MacKenzie, W.S. (1958) Alkali feldspars. IV. The cooling history of high-temperature sodium-rich feldspars. American Mineralogist: 43: 872-889.

Feldspar Distinctions, Characteristics & Identification

About Feldspar. Search the site GO. Science. Geology Types of Rocks ... Alkali Feldspar in Detail. Alkali feldspar has the formula KAlSi 3 O 8, potassium aluminosilicate.

Alkali Feldspar - Rock Library | Imperial College London

Alkali feldspar ((K,Na)AlSi 3 O 8) Synonyms: Perthite. Silicate, Tektosilicate, Feldspar How to use crystal diagram: Alkali feldspars are feldspars rich in Na and K.

Feldspar

This rock sample (alkali feldspar syenite) does not contain much more than red-colored alkali feldspar. The width of the sample from Estonia is 8 cm.

An introduction to minerals and rocks under ... - OpenLearn

Anyone can learn for free on OpenLearn, ... An introduction to minerals and rocks under ... Feldspars with compositions within this range are called alkali feldspars.


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