Pink Orthoclase

Orthoclase

Orthoclase, or orthoclase feldspar (endmember formula KAlSi3O8), is an important tectosilicate mineral which forms igneous rock. The name is from the Ancient Greek for "straight fracture", because its two cleavage planes are at right angles to each other. It is a type of alkali feldspar, also known as potassium feldspar or K-spar. The gem known as moonstone (see below) is largely composed of orthoclase.

Pink

Pink is a pale tint of red or rose, the color of the pink flower. It was first used as a color name in the late 17th century. A combination of pink and white is associated with innocence, whereas a combination of pink and black links to eroticism and seduction.

pink

Noun

1. A color reminiscent of pinks, the flowers.
2. Magenta, the colour evoked by red and blue light when combined.

Adjective

1. Having a colour between red and white; pale red.
2. Of a fox-hunter's jacket: scarlet.

orthoclase

Noun

1. Potassium aluminum silicate, KAlSi3O8, a common feldspar of igneous, plutonic, and metamorphic rocks. Orthoclase is the main feldspar of pegmatite occurrences, where it is most commonly flesh-colored. Orthoclase is used in the ceramic and glass industries and as a decorative gravel.