Gem, Rock, and Mineral Postage Stamps Featuring

Mineral Name: Polybasite

Composition: Silver copper antimony sulfide

Nomenclature: Named from the Greek words "poly" and "basis" which mean "many" and "base," a reference to the chemical nature of the mineral.

Industrial Uses: Silver ore.

Additional Notes: Resembles hematite (iron oxide) but is much softer.

Central Africa : Scott 1262e : 600 francs : 1998