Composition: Potassium aluminum silicate
Nomenclature: Named after the Greek words "mikron" meaning "little" and "klinein" meaning "to stoop"; a reference to the shape of the crystals.
Industrial Uses: Gemstones; ornamental stone; used in the manufacture of glass, enamel, and porcelain.
Additional Notes: A member of the Feldspar group of minerals. The deep green variety of microcline is referred to as "amazonite."
French Southern and Antarctic Territories : Scott 212 : 1.00 franc : 1 Jan 1996
Microcline var. amazonite (feldspar)
Kenya : Scott 101 : 40 cents : 13 Dec 1977
Microcline var. amazonite (feldspar)
Uganda : Scott 606 : 150 shilling : 18 Jan 1988
Microcline var. amazonite (feldspar)