Gem, Rock, and Mineral Postage Stamps Featuring

Mineral Name: Atacamite
Composition: Copper chloride hydroxide
Nomenclature: Named after the Atacam desert province in northern Chile.
Industrial Uses: Copper ore.
Additional Notes: Atacamite is a polymorph with two other minerals, botallackite and paratacamite. Polymorphs (a term that means "multiple forms") are minerals that have the same chemical composition—copper chloride hydroxide in the case of atacamite, botallackite, and paratacamite—but have different crystallographic structures.

Chile Scott 1179d
Scott 1179d
150 pesos
9 Aug 1996

The stamp shows a natural, unpolished mineral specimen. Philatelic Mineralogy Copyright © 1997-2010 by Richard Busch