Minerals from Zaïre, 1983
Deposits
of cassiterite, the chief source of tin, are found in a broad zone extending
from northern Shaba Region through Sud-Kivu and Nord-Kivu to Haut-Zaïre Region.
Associated with the cassiterite are commercially exploitable amounts of ores of
tungsten, niobium, and tantalum. The Kivu Mining and Industrial Company
(Société Minière et Industrielle du Kivu--Sominki) has responsibility for tin
mining in Nord-Kivu and Sud-Kivu regions, and the Zaire Tin Company (Compagnie
Zaïrétain--Zaïrétain) carries out open-pit operations in Shaba Region.
Date of issue: 14 February 1983
Expiration date:
Design: F. Severin
Printing: Hélio
Courvoisier, s.a., La Chaux De Fonds, Switzerland
Paper with silk threads
Perforation: 12
Size: 22.5 x 32 mm and 32 x 22.5 mm
Sheet: 50
Marginal inscriptions: top and bottom “Hélio Courvoisier, s.a., La Chaux De
Fonds, Suisse”.
Circulation: 66,000
No 1181. 2k, Maslachite
No 1182. 45k, Quartz
No 1183. 75k, Or
No 1184. 1z, Uranium et pechblende
No 1185. 1,50z, Bournonite
No 1181. 3z, Cassiterite
No 1182. 6z, Dioptase
No 1183. 8z, Cuprite
The series:
%20Minerals%20from%20Zaire_bestanden/image002.jpg)
%20Minerals%20from%20Zaire_bestanden/image004.jpg)
The imperforated series is in size and coloring exact the same as above:
Remark: the white border around these stamps is much larger when cut from a side, top, bottom or corner of a sheet.
%20Minerals%20from%20Zaire_bestanden/image006.jpg)
No 1189. 10z Diamond (always from block 54)
%20Minerals%20from%20Zaire_bestanden/image008.jpg)
Block 54. Perforated & imperforated
%20Minerals%20from%20Zaire_bestanden/image010.jpg)
%20Minerals%20from%20Zaire_bestanden/image012.jpg)
There are no variations or curiosities known for any of the above shown material.