Mining Terms. . 175 
Sinver. A metallic element; the whitest of the 
metals; specific gravity, 10.53; fusing point, 1873 de- 
grees; symbol, Ag; atomic weight, 108. One ounce 
pure silver coined in U. 8S. dollars is worth $1.2929, 
gold. 
Sitver GLaNcr. An ore; when pure contains 87 . 
per cent silver and 13 per cent sulphur. Argenitite. 
Sxrp. A square hoisting bucket running in guides 
or in grooves. 
Stickensipes. Smooth, polished portions of the 
wall or of some verticle plane in the lode, caused by 
friction. It may occur on the ore itself. German. 
Supe. One kind of fault—the vertical disloca- 
tion of a lode. | . 
Stipe. The mass of loose. rock overlying either 
lode or country. : 
Stopr. An opening driven upon the inclination 
of the vein. 
Stuice. A series of boxes set in line and floored 
with riffle blocks to catch.the gold in a placer mine. 
Smettine. The reduction of metals from their 
ores in furnaces. It is a form of the word melt. In 
smelting, the ore is melted. In other processes 11 is 
roasted. 
Sorte. The floor of a horizontal working. 
Sottar. Any platform or wooden floor or cov- 
ering in a working. Corn. 
Soueu. A drain. Eng. 
Spar. A general term applied to rock with dis- 
tinct cleavage and lustre. 
Spur. A branch or offshoot from a larger vein. 
Spinine. Timbering used in quicksand or loose 
ground where lathes are driven behind timbers and kept 
flush with the heading. 
Stamps. Machine for crushing ores by vertical 
stroke. 
Store. The working above or below a level where 
the mass of the ore body is broken. Corn. 
