TABLE 10174  SOUTHERN AFRICA MINERALS YEARBOOK—1988 
NAMIBIA: PRODUCTION OF MINERAL COMMODITIES1 
(Metric tons unless otherwise specified) 
 
Commodity2 1 984 1 985 1 986 1 987~ 1988~ 
METALS 
Antimony, Sb content of sodium antimonate — — —
32 ~98

Arsenic, white 2,504 ~ 2,471 2,208 1,864 ~2,983 
Cadmium metal, refined 40 58 61 51 ~106 
Columbium and tantalum: Tantalite concentrate, 
gross weight kilograms p5115 ~3113 8,186 13,809 15,000 
Copper: 
 Mine output, Cu content of concentrate 47,406 48,036 49,591 37,557 40,000

Metal, blister 46,436 43,295 45,688 35,488 ~39,970 
Gold, Au content of smelter products troy ounces 6,302 6,237 5,916 5,530
~6,269 
Lead: 
 Mine output, Pb content of concentrate 33,255 34,640 37,494 32,997 37,200

Metal, refined 28,930 38,511 40,047 40,634 344,447 
Silver, mine output, Ag content of concentrate 
thousand troy ounces 3,255 3,404 3,457 3,320 3,300 
Tin, mine output, Sn content of concentrate 906 984 880 1 097 1,182 
Uranium, U3O8contentofconcentrate 4,400 4,400 3,990 4,175 4,100 
Zinc, mine output, Zn content of concentrate 32,195 ~30332 35,371 39,650
36,000 
INDUSTRIAL MINERALS 
Diamond: 
 Geme thousand carats 884 865 970 970 890 
Industriale do. 46 45 40 50 48 
Total do. 930 910 1,010 1,020 ~938 
Granite NA NA 71 730 1,000 
Limestone and marble ~23464 ~35209 33,829 ~32000 35,000 
Lithium minerals: 
 Amblygonite ~58 ~49 52 106 ~147 
Lepidolite ~ r7~ 52 61 ~18 
Petalite ~829 p1763 751 749 ~1,477 
Total ~9O5 rl,873 855 916 ~1,642 
Mica ~87 — — — — 
Quartz 20 300 851 2,273 
Salt p88376 ~153447 134,644 125,031 125,387 
Semiprecious stones: 
 Agate 41 65 87 100 100 
Amethyst 1 05 21 37 1 89 200 
Beryl 4 2 4 1 — 
Chrysocolla kilograms NA NA 1 000 8,250 8,200 
Dioptase do. NA NA 520 60 60 
Rosequartz 369 299 172 365 370 
Sodalite — 140 NA — 100 
Tourmaline kilograms 306 745 2,878 1,709 1,700 
Silica: 
 High-purity 57 946 1,041 2,190 2,100 
Forflux 1,025 645 5,918 e6,000 6,000 
Sulfur, S content of pyrite concentrate 104,454 107,718 133,824 74,354 75,000

Wollastonite — 373 601 500 500 
eEstimated ~PreIiminary. Revised. NA Not availabte. 
1 Table includes data through June 22, 1989. 
2 Data are compiled from the annual report of the chamber of Mines of South
West Africa-Namibia, and from operating company annual reports as follows:
Tsumeb Corp. Ltd. (TCL), South African Iron 
and Steel Corp. Ltd., Gold Fields Namibia Ltd., De Beers Consolidated Mines
Ltd., and others as available. 
3Reported figure.