Tin, 
349 
black and brown blende ; less frequently with fiuor-spar, 
topaz, appatite, felspar, schorl, magnetic ironstone, cop- 
per-glance, lead-glance, and white lead ore. It is found 
also in great quantity in alluvial land. The greater part 
of the English, much of the Spanish, and the great- 
er proportion of that in India, occurs in that situation. 
Geographic Situation , 
Tin is not found in many countries, but where it does 
occur, it is in very considerable quantity. In the most 
northern countries it is entirely wanting. In Europe 
there is only three tin districts. The first is in the Erzge- 
birge, on the Saxon and Bohemia sides, and extends as 
far as the Riesengebirge and Fichtelgebirge. The second 
district is in Cornwall. The third is that of Galicia on 
the borders of Portugal. 
In Asia it is found, in vast quantity, in the peninsula 
of Malacca, Siam, and in the island of Banka. 
In America it is said to occur near Cochimbo, and in 
Chili. 
Use, 
It is worked as an ore of tin, and from it all the tin of 
commerce is obtained. 
Observations • 
1. Its name is derived from the great quantity of tin 
which it affords, and its unmetallic-like aspect. 
2. It is distinguished from Wolfram by its inferior 
hardness, as it does not give fire with steel ; and by the 
streak, which in tinstone is greyish- white, but in wolfram 
reddish-brown : from Blende by its inferior hardness and 
uneven fracture. 
