Dark Pink Feldspar Lumps are used in a plethora of industrial applications including general manufacturing, plastic processing, rubber, adhesives, among others. These are the most abundant group of minerals in the earth’s crust. These lumps are typically used as a filler in plastic, paints, and adhesives. Dark Pink Feldspar Lumps are also used in glass and ceramic production. Our customers can approach us to purchase the feldspar lumps at a cost-effective price.