Microcline

Microcline

Microcline feldspar has the formula of  KAlSi3O8, and is sometimes referred to as potassium feldspar or K-feldspar. It is dimorphous with orthoclase, and  is a major constituent of granite, and common in felsic igneous rocks. The specimen is typical of others from Papachacra, Belen department, Catamarca province, Argentina. It is mainly composed of beige-pink crystals of microcline and is peppered with crystals of smoky quartz.