Gem, Rock, and Mineral Postage Stamps Featuring

Mineral Name: Zinnwaldite

Composition: Potassium lithium iron aluminosilicate fluorohydroxide

Nomenclature: Named after Zinnwald, Bohemia, where it was found.

Industrial Uses: .

Additional Notes: A member of the Mica group of minerals.

Germany, DDR : Scott 1355 : 10 pfennige : 22 Feb 1972

Zinnwaldite (mica) on quartz