TABLE 4—Continued978  CANADA MINERALS YEARBOOK—1988

CANADA: IMPORTS OF MINERAL COMMODITIES1 
(Metric tons unless otherwise specified) 
 
Commodity 
1986~ 
1987 
 
Sources, 1987 
 
 
 
United 
States 
. 
Other (principal) 
INDUSTRIAL MINERALS—Continued 
 
 
 
 
Mica: 
 
 
 
 
Crude including splittings and 
 
 
 
 
waste value, thousands 
$592 
$568 
$568 
 
Worked including agglomerated splittings do. 
$2,748 
$2,620 
$1 794 
France $369; India $329. 
Nitrates, crude 
7,941 
4,980 
853 
Chile 4,109; United Kingdom 18 
Phosphates, crude thousand tons 
2,356 
1 968 
1 623 
Togo 258; Morocco 73. 
Pigments, mineral: Iron oxides and hydroxides, 
 
 
 
 
processed 
8,484 
1 1 886 
9,483 
West Germany 1 01 9; Spain 721. 
Precious and semiprecious stones other than 
 
 
 
 
diamond: 
$1 6,504 
$1 7,455 
$7,867 
Thailand $2,008; West Germany $1 518. 
Natural value, thousands 
 
 
 
 
Synthetic do. 
$6,354 
$6,086 
$1 855 
Austria $221 7; West Germany $736. 
Pyrite, unroasted do. 
$96 
$70 
$70 
 
Salt and brine thousand tons 
1,331 
1,113 
662 
Mexico 341; Chile 53. 
Sodium compounds, n.e.s.: 
1 087 
1 143 
1,143 
 
Carbonate, manufactured 
 
 
 
 
Sulfate, manufactured 
55,226 
52,216 
16,711 
United Kingdom 20,515; Norway 4,215. 
Stone, sand and gravel: 
47,920 
67,445 
33,020 
Republic of South Africa 18,061 ; Italy 4,014. 
Dimension stone: 
 
 
 
 
Crude and partly worked 
 
 
 
 
Worked value, thousands 
$27,251 
$42,648 
$4,656 
Italy $30,293; Spain $2,705. 
Dolomite, chiefly refractory-grade 
3,101 
29,005 
29,005 
 
Gravel and crushed rock 
551 051 
594,103 
590,317 
West Germany 1 540; Australia 1,295. 
Limestone other than dimension thousand tons 
2,357 
2,695 
2,695 
 
Quartz and quartzite 
349 
515 
368 
Sweden 139; Brazil 7. 
Sand other than metal-bearing thousand tons 
1 638 
1 626 
1 624 
Australia 1 ; Philippines 1. 
Sulfur: 
10,760 
24,711 
24,690 
West Germany 21. 
Elemental: 
 
 
 
 
Crude including native and byproduct 
 
 
 
 
Colloidal, precipitated, sublimed 
31 
151 
59 
Belgium-Luxembourg 80; West Germany 
12. 
Sulfuric acid 
29,126 
44,624 
37,853 
United Kingdom 6,696; Australia 33. 
Talc, steatite, soapstone, pyrophyllite 
39,488 
49,711 
48,978 
Finland 218; United Kingdom 157. 
Vermiculite2 
24,199 
25,260 
17,125 
Republic of South Africa 8,135. 
Other: 
$12,964 
$16,704 
$15,403 
Republic of South Africa $969; France $169. 
Crude value, thousands 
 
 
 
 
Slag and dross, not metal-bearing 
See footnotes at end of table. 
 188,394 187,904 144,845 United Kingdom 81; Japan 3.