Feldspar is the name given to a group of minerals distinguished by the presence of alumina and silica (SiO2) in their chemistry. This group includes aluminum silicates of soda, potassium, or lime. It is the single most abundant mineral group on Earth. They account for an estimated 60% of exposed rocks, as well as soils, clays, and other unconsolidated sediments, and are principal components in rock classification schemes. The minerals included in this group are the orthoclase, microcline and plagioclase feldspars.
Mineral Classification: silicates
Chemical Formula: KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8
Specific Gravity: 2.55-2.76
MOHs Hardness: 6-6.5
SPECIFICATIONS OF POTASH FELDSPAR
Loss of ignition LOI 0.337% Silica SIO2 65.89 Calcium Oxide Cao 1.232 Magnesium Oxide Mgo 0.36 Alumina AI203 18.03 Ferric Oxide Fe203 0.13 Sodium Oxide Na20 3.22 Potassium Oxide K2O 10.08
SPECIFICATION OF FELDSPAR
POTASH SODIUM SODIUM FELDSPAR FELDSPAR F'PAR ZED MES