Feldspar is the mineral name given to a group of minerals distinguished by the presence of aluminum (Al) and the silica (SiO4) in their chemistry.
They form in a variety of thermal environments, during the crystallization of liquid rock (magma), by metamorphism of rocks deep in the earth, and in sedimentary processes.
Feldspar Specification
Feldspar Medium Grade
Chemistry
Al2O3 (%)20.5 Max
Na2O (%)12.0 Max
Fe2O3 (%)0.05 Max
TiO2 (%)0.1 Max
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